Papers - UEHARA Iwao
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Iwao UEHARA
Kanto Journal of Forest Research 76 ( 1 ) 29 - 32 2025.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：関東森林学会
要旨：2011年3月の東日本大震災の発生以来，福島県内の各地にはいまなお放置された状態の山林が数多く存在している。本論文では，放射性降下物の汚染が甚大であった地域の一つである相馬地方のスギ，ヒノキの放置林および広葉樹二次林を対象地とし，それぞれ間伐をおこない，その後の植生回復を観察し,今後の当地における施業について提言することを目的とした。研究の方法は，各調査林分において50％の本数間伐を2019年～2022年に実施し，間伐前後の相対照度を比較し，それぞれ10 ｍ×10 m（１a）の調査区を4か所ずつ設けて，2024年6～10月に植生調査をおこなった。各林分では30～50樹種前後の実生が見出されたものの，その上長成長は低く，スギ，ヒノキ林分においては林床の被覆度も低かった。その主な理由には林冠閉鎖による低照度が推察され，追加の間伐が必要と考えられた。
キーワード：相対照度，林床植生，被覆度，実生，50％間伐
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Effects of leaf allelopathy on plant seedling growth of forest trees. Reviewed
Mai MARUYAMA, Megumi TANAKA, Iwao UEHARA
Kanto Journal of Forest Research 76 ( 1 ) 77 - 80 2025.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
Abstract: The plants have been reported to have allelopathic effects that inhibit or promote the growth of other plants. Although it is known that there are several pathways for their expression, such as volatilization and dissolution, few studies have focused on the allelopathic effects of trees, and also few have been able to identify the allelopathic substances. This study aimed to investigate the inclination and factors of allelopathic effects at six forest tree species, and to accumulate basic data. Growth indicators of lettuce
seedlings due to volatilization and leached components were measured. The results showed that although growth suppression was observed overall, there were no differences among species. The difference between fresh and defoliated leaves also differed among tree species. The growth inhibition in the Sandwich method may be due to the action of relatively stable substances.
Keywords: Allelopathy, Sandwich method, Dish pack method, Forest tree
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Shoko TODA, Megumi TANAKA, Iwao UEHARA
Kanto Journal of Forest Research 76 ( 1 ) 57 - 60 2025.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
Abstract: Main of cutting is that insert into the soil, but there is a method wood scion in the water that insert into the water. Wood scion in the water seems to be used for plants that root when they in the water, but due to insufficient oxygen supply, it is reported that delay root development and cause soft roots. When we grow wood scion in the water, we have to stabilize the cuttings. In this study, we use Morus australis, which had shown rooting by wood scion in the water in a previous study, was used to prepare and grow two types of plants, one inserted in Kanuma soil and the other in three different types of wood scion in the water. Survival rate and growth rates were higher for those inserted into the Kanuma soil than into water. Survival rates were improved by creating space around the cuttings bases in wood scions in the water. Since the amount of growth is by far the highest for those inserted in soil, it is considered necessary to circulate air, etc. in the case of wood scion in the water.
Keywords: wood scion in the water, Morus australis, rootage, survival rate, cutting media
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Utilizing local forests for local elderly people: Case studies and their future possibilities Invited
Iwao UEHARA
Proceedings of 1st Challenges and Tasks in the Era of Super-Aging : Forest Therapy and Well Aging International conference 1 ( 1 ) 197 - 204 2024.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：Dongguk University, Korea
Currently, aging in local communities is a major social issue in Japan. At the same time, the increase in abandoned forests in various regions is also a major issue. However, if the health and recreation functions of forests can be effectively utilized, local forests have great potential for promoting the health of local elderly people, preventing diseases, and improving their health.
This paper introduces five case studies of health and recreation in local forests in local communities in Japan. The first two cases are from Fukuoka Prefecture and Kagoshima Prefecture in Kyushu, which are close to Korea. At local hospitals in both prefectures, forests of cedar, cypress, and evergreen broadleaf trees that had been abandoned were developed and used mainly for the treatment of dementia patients.
As a result, the patients' behavioral disorders associated with dementia (BPSD) decreased, and improvements were seen in their daily lives. The next case is from Saitama Prefecture and Nagano Prefecture in Honshu. Reg
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Iwao UEHARA
森林保健研究 5 1 - 5 2024.08
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：日本森林保健学会
This paper shows a case where a hospital-owned secondary forest of broad-leaved trees, which had been abandoned for more than 30 years, was developed for patients’ rehabilitation and recreation at a regional hospital in Tokyo. The survey site is Ongata Hospital and its forest (approximately 6 ha) located in suburb of Hachioji City. The owned forest is mainly a secondary forest of broad-leaved trees. The tree layer consists of trees such as Quercus serrata, Q. acutissima, and Castanea crenata, as well as Zelkova serrata, Celtis sinensis, and Magnolia ovobata. The forest floor is thriving with Sasamorpha borealis. As of September 2020, the tree density before maintenance was around 4,000 to 6,000 trees per a ha, and the average relative light intensity in the forest was around 5 %.Clearing and thinning work on this forest block began in October 2020 and continued until September 2022. The tree density decreases to 1,500 trees/ha in 2021 and to 300 to 500 trees per a ha in 2022. The average relative illuminance improved to around 15 to 30 %. The number of confirmed tree species on the forest floor was around 40. The thinned wood was used to create rest benches, walking paths and occupational therapy of patients.
Key-words: secondary forest, thinning, Sasamorpha borealis, forest therapy, Hachioji City
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Attempts of forest therapy at Nishino Hospital in Kita-Kyushu city, Japan Reviewed
Iwao UEHARA
森林保健研究 5 6 - 18 2024.08
Authorship：Lead author Language：English Publisher：日本森林保健学会
An aging society is currently a feature of our country, and health promotion for the elderly has also become an issue. Many elderly people suffer from some kind of disease or poor physical condition, feel anxious about their health, and it is not uncommon for elderly people to spend the rest of their lives in social welfare facilities. Under these circumstances, this report shows a case in which a local hospital and social welfare facility have several hectares of forest on their premises, and are using it for health and respite for patients and users.
Keywords: local hospital, social welfare facility, health promotion
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Iwao UEHARA
Kanto Journal of Forest Research 75 ( 1 ) 25 - 28 2024.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：関東森林学会
Abstract: In this study, I thinned an artificial cypress forest in Minamisoma City, Fukushima Prefecture, and conducted a subsequent vegetation survey. The survey targets were a forest stand that is approximately 30 years old and has never been thinned
or pruned (Haramachi district), and a young forest that is approximately 20 years old and has been pruned once 10 years after planting (Odaka district). There are 2 locations. The former had a stand density of 3500 trees/ha, average tree height 12 m, and average DBH 15 cm, while the latter had a stand density of 2000 trees/ha, average tree height 8 m, and average DBH 12 cm. The former cypress forest was thinned by 50% in December 2021, and the latter cypress forest was thinned by 50% in December 2022. Seedlings of 20 to 30 tree species were found in both stands. In addition, we collected samples of soil, branches, leaves, etc., and
measured radioactive cesium. The results showed that in the former forest stand, it was approximately 20,000 Bq/h in a 5 cm deep soil layer, and in the latter, in a 5 cm deep soil layer. Approximately 100,000 Bq/h of radioactive cesium was detected.
Keywords: abandoned forest, tree thinning, relative illumination, sample collection, radioactive cesium -
More lianas on larger host trees on steep slopes in a secondary temperate forest, Japan Reviewed International journal
Ikumi Nakada, Iwao Uehara, Hideki Mori
Plant Ecology 225 519 - 533 2024.03
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Springer
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New reforestation by planting and natural regeneration and welfare utilization in Japan Reviewed International journal
Iwao UEHARA
森林保健研究 4 11 - 19 2023.06
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：日本森林保健学会
Abstract:
Approximately 70% of Japan's land area is covered with forests, so it is sometimes called a forest country. There are four types of forest belts: subarctic forest, temperate forest, temperate forest, and subtropical forest, and biodiversity in the forest is high. On the other hand, however, there is an annual increasing number of "abandoned forests" where appropriate treatment such as thinning has not been done in artificial forests mainly made of cedar and cypress in Japan. Although the main reasons for this increase in abandoned forests are social factors such as the aging and declining number of forestry workers and falling log prices. To improve these conditions, it requires efficient forest management and reforestation. Traditional Japanese forestry involves planting saplings in mountains, cutting undergrowth, pruning, clearing and thinning. However, as the forestry labor force is declining, it is necessary to review the traditional way of doing things. Therefore, in this study, I introduce an example of a mixed reforestation method that combines artificial planting and natural spraying. This method can also be expected to secure biodiversity. Japanese foresters have tried to plant and make mixed forest artificially, but it is quite difficult, because Japanese forest ecosystem is so complicated and difficult to make mixed and multi-layered forest artificially. Then utilizing natural regeneration power is quite making sense on this point. Various and diverse vegetation must bring various and diverse possibilities, too, such as medical, relax, food utilization, forest therapy, even preventing COVID-19. Totally, biomass of the mixed forest must be utilized efficiently.
Keywords; abandoned forest, natural regeneration, silviculture, forest therapy, COVID-19 -
Species occurrence, regeneration and relevance of herbaceous plants on selected street lanes and public parks of Setagaya ward Reviewed International coauthorship International journal
Kibalama Marvin Bogere, Iwao UEHARA
Journal of Forest and Human Health Promotion Research 4 1 - 10 2023.06
Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：The Society of Forest
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Possibility of abandoned forest regeneration by thinning and monitoring and radioactive cesium for 10 years in Fukushima forest Reviewed
Iwao UEHARA
Journal of Forest and Human Health Promotion Research 3 11 - 28 2022.07
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：日本森林保健学会
It has been reported that some forests in the Soma area of Fukushima Prefecture have high concentrations of radioactive cesium since the accident at the Fukushima Daiichi nuclear power plant in March 2011. However, the actual situation has not been clarified in many cases, and there are still high requests for scrutiny from local residents and neighbors. Since 2011, Tokyo Agriculture University has set up multiple fixed-point observation sites in the forests of the Soma region and has been continuously measuring radiation doses. In this paper, I report the results of continuous measurement for the 10 years. In 2019, thinning in the Cryptomeria japonica plantation in Soma City and in 2020 in the Chamaecyparis obtusa plantation in Minamisoma City will be carried out in private forests of about 30 years old, and those forests before and after thinning will be carried out. As of March 2022, the number of tree species in which cesium-134 (half-life is about 2 years) or 137 (half-life is about 30 years) is not detected in the collected branch and leaf samples is gradually increasing, especially in the seedlings of broad-leaved trees and conifers by natural dispersal. The number of individuals in which both are not detected is gradually increasing. In the beginning of 2011, there were tens of thousands to hundreds of thousands of becquerels or more of forest soil, but in December 2021, there were many places where the number decreased to about 1/10. In addition, a comparison of soil depths of 5 cm and 10 cm showed that the radioactive concentration at a depth of 10 cm decreased to about 1/10 to 1/40 or less compared to a depth of 5 cm. It can be seen that radioactive falling substances are accumulated on the surface of the soil. In the thinning of the Cryptomeria japonica stand in 2019 and Chamaecyparis obtusa stand in 2020, illuminance of both of the forest floor was improved, and in the following year, new seedlings were found on each forest floor. Based on these facts, we would like to propose the creation of a mixed forest of artificially planted coniferous forests and broad-leaved trees by natural dispersal. Radioactive substances from streams in the forest have not been detected since 2011.
Keywords: forest soil, litter, thinning, abandoned artificial forest, regenerationOther Link： https://forest-and-human-health.jp/
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Distribution and characteristic tree shapes of Larix kaempferi seedlings in Okutama Practice Forest of Tokyo University of Agriculture Reviewed
Iwao UEHARA
Kanto Journal of Forest Research 73 37 - 40 2022.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：関東森林学会
Abstract:
Larix kaempferi is a woody plant of the genus Larix Pinaceae. It is only one native deciduous coniferous trees in Japan. Larix kaempferi is a strong intolerant tree and grows fast. It is also a pioneer species and invades bare areas such as ground covered by volcanic ash and gravel. The soil demand of Larix kaempferi is low, therefore, a colony of them is sometimes formed at sites with poor soil. However, it is rare to see the seedlings in the Okutama Practice Forest of Tokyo University of Agriculture (TUA). The distribution and characteristic tree shapes have yet to be clearly identified. Thus, this study focused on the seedlings of Larix kaempferi at 900 m above sea level around a forest road and surveyed the seedlings’ distribution and characteristic tree shape. Results showed that 1 to 5-year-old seedlings of Larix kaempferi were distributed at bright sites (relative illuminance was 70 %) in the radius of 10 m from the Larix kaempferi stand. Seedlings were distributed on the soft ground (soil hardness: 0.5 kg / cm2) among the gravel soil. The tree shape was mainly dwarf or creeping types, the leaves are 3 to 4 cm long, and T/R ratio was 1.5 on average.
Key-word: seedlings, soil hardness, Yamanaka soil hardness meter, tree shape, T/R ratio -
Understanding urban trees of Setagaya city in correlation with the interests and perceptions of forestry students Reviewed
Kibalama Marvin Bogere, Iwao Uehara
Kanto Journal of Forest Research 73 57 - 60 2022.03
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Study on the Antibacterial Effects on Woody Plant Fragrances Invited Reviewed
292 7 - 21 2021.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Case study of campus practice as an alternative forest practice responding COVID-19 Reviewed
72 ( 1 ) 41 - 44 2021.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
COVID-19 has been spread out world widely since it had been reported in Wuhan city in China in 2019. It has brought various limitations in our daily lives and it has given negative impacts on schools and campus lives, too. Therefore, educational society has mainly taken measures website delivery learning materials against COVID-19. In these sequences, forest departments of Japanese universities have also planned alternative practices of field practices. This study showed a case of campus practice as an alternative forest practice and considered the effects at Tokyo University of Agriculture. Totally 130 students were belong to 6 groups (approximately 20 students each) and each groups were divided to 5 training teams (4 students each) to keep physical distance. Contents of the practice were every tree survey (tree height, diameter at breast height: DBH), canopy projection drawing, soil cross section drawing, soil hand sorting, and tree identification on campus. These alternative practice showed some problems that were lack of dynamic forest practices such as thinning, making soil cross section, differences between forest tree species (Cryptomeria japonica and Chamaecyparis obtusa) and green planting species(Zelkova serrata and Ginkgo biloba), stand density, and so forth.
Key word: COVID-19, campus practice, alternative forest practice, silviculture, sophomore studentsOther Link： http://www.kantoforest.jp/
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Ectomycorrhizal fungal communities in the boundary between secondary broad-leaved forests and Japanese cypress plantations Reviewed
Akira Ishikawa, Iwao Uehara, Megumi Tanaka
Journal of Forest Research 25 ( 6 ) 397 - 404 2020.11
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Student training at Okutama Practice Forest of Tokyo University of Agriculture Reviewed
68 17 - 20 2020.04
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：The Chubu Forestry Society
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Distribution and crown shape changing of Lindera praecox under the artificial Cryptomeria japonica and Chamacyparis obtusa canopies Reviewed
Iwao UEHARA
関東森林研究 71 ( 1 ) 53 - 56 2020.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：関東森林学会
Abstract:
Lindera praecox is a woody plant of Camphoraceae, Lindera that has peculiar fragrance. It contains oily component and it has been used for firewood. Its fruit had made desk lamp oil, too. Natural distribution of Lindera praecox broads Honshu Island to Kyushu Island in Japan. It can grow on the floor and edge of artificial Criptmeria japonica and Chamaecyparis obtusa stands. However, the characteristic features of Lindera praecox under the canopies of Cryptomeria and Chamaecyparis stands has not been clear yet. Then, this study surveyed the condition of distribution, density, and tree shape variation of Lindera praecox under the canopies condition. The survey site was 50-year artificial Cryptomeria and Chamaecyparis stands located in 500 altitude in Kosuge village, Yamanashi Prefecture. The stand incline was approximately 25 degree. Lindera praecox formed second canopies under the canopies. Their crowns transformed their shape into two types that were vertical and horizontal direction. Their branches and leaves might develop stepped shape for light reception and corresponding the incline. These results suggested that the tree shape might be used as an indicator of the stand condition. It should keep Lindera praecox without cutting under the Cryptomeria and Chamaecyparis canopies at steep stands to prevent soil erosion.
Key word: under the canopies of Cryptomeria japonica and Chamaecyparis obtusa, Lindera praecox, distribution, characteristic features -
Distribution of natural regenerated Lindera umbellata at artificial Chamaecyparis obtusa floor by several thinning rates Reviewed
Iwao UEHARA
関東森林研究 70 ( 2 ) 157 - 160 2020.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：関東森林学会
Thinning cut facilitates natural regeneration of woody species on the forest floor.
This research surveyed the natural regeneration of Lindera umbellata at the floor of artificial Chamaecyparis obtusa stand. It also aimed to reconsider how thinning rate have effects on the distribution of Lindera umbellata. The survey plots were 30%, 50%, 70% thinning, and control plot in a 50-year Chamaecyparis obtusa stand and each plot area was 400㎡. The average tree height of Chamaecyparis obtusa was 17.5m, the average DBH was 24cm, and the average crown height was over 6.5m.
The results showed the appearance rate of Lindera umbellata seedlings was 1 to 3% of all seedlings except Chamaecyparis obtusa. Thinning rate and relative illumination and the tree height had correlation.
These results suggested it has some possibility of forest floor cultivation of Lindera umbellata. There was no correlation between thinning rate and relative illumination and chlorophyll amount of the leaves of Lindera umbellata.
Key-words: natural regeneration, floor vegetation, appearance rate, space dominant, SPAD -
Intake of Radionuclides in the tree of Fukushima Forests 2. Study of radiocesium flow to poplar seedlings as a model tree Reviewed
Nonaka Miki , Yasukawa Chisato , Itakura Masateru , Tsubokura Masaharu , Baba Kei'ichi , Ohbayashi Hiroya , Seyama Tomoko , Uehara Iwao , Kaida Rumi , Taji Teruaki , Sakata Yoichi , Hayashi Takahisa
Forests 10 ( 9 ) 736 - 744 2019.09
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Intake of Radionuclides in the Trees of Fukushima Forests 1. Field Study Reviewed International journal
Aoki Shoko , Nonaka Miki , Itakura Masateru , Tsubokura Masaharu , Baba Kei'ichi , Ohbayashi Hiroya , Sugawara Izumi , Seyama Tomoko , Uehara Iwao , Kaida Rumi , Taji Teruaki , Sakata Yoichi , Hayashi Takahisa
Forests 10 ( 8 ) 2019.08
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Mycorrhizosphere Bacterial Communities and their Sensitivity to Antibacterial Activity of Ectomycorrhizal Fungi Reviewed
SHIRAKAWA MAKOTO , UEHARA IWAO , TANAKA MEGUMI
Microbes and environments 34 ( 2 ) 191 - 198 2019
Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Antibacterial effects of pyroligneous acid of Larix kaempferi Reviewed
Iwao UEHARA, Megumi TANAKA
Journal of Forest and Human Health Promotion Research 2 14 - 19 2018.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：The Society of Forest Amenity and Human Health Promotion in Japan
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Natural distribution of Pterostyrax hispida under the tree canopies of artificial Larix leptolepis stand. Reviewed
Iwao UEHARA
Kanto Journal of Forest Research 68 ( 2 ) 217 - 220 2017.11
Language：English Publishing type：Research paper (scientific journal) Publisher：Society of Kanto Forest
Pterostyrax hispida sometimes grows in colonies under the artificial Larix leotolepis stands in the Kanto districts or Central part of Japan. This study researched the natural distribution of Pterostyrax hispida at artificial Larix leptolepis stands in the 800 to 900 meters altitude in the Okutama Training Forest of Tokyo University of Agriculture. The Pterostyrax hispida colonies were often luxuriant under the Larix leptolepis tree canopies, but they were decreased under the Criptomeria japonica and Chamaecyparis obtusa canopies. The growth of Pterostyrax colonies also showed proportion with the tree height difference between Pterostyrax and Larix, or growth of the tree canopies of Larix. Those conditions must be suitable for Pterostyrax growth, because the light condition were profitable for them. However, growing in colonies of Pterostyrax restrained the other woody plants under the tree canopies of Larix. At the clay soil stands, the average height of Pterostyrax was low and their colonies decreased, too. It also showed the Pterostyrax has possibility as an indicator of soil condition.
Keywords: Pterostyrax hispida, Larix leptolepis, colony, tree canopies, indicator -
Cuttings of Lindera umbellata Thunb. and Lindera umbellata Thunb. var. membranacea Reviewed
UEHARA Iwao
Chubu Forestry Research 65 11 - 14 2017.04
Language：English Publishing type：Research paper (scientific journal)
Abstract: Lindera umbellata Thunb has a special sweet fragrance. It has been used as tooth picks for Japanese traditional cakes, but recently it has been also utilized as medical liquor and a bath solution. Demands for it as a medical plant have been also increasing. Therefore, producing stocks has another possibility for rural forests. This study attempted to make cuttings of Lindera umbellata Thunb and Lindera umbellata Thunb. var. membranacea (Maxim.) Momiyama. Each of the cutting materials was collected before leaves bloomed leaves in the middle of April in 2016. The cuttings were two types; 10cm and 20cm long and planted in a planter (60cm long × 22cm wide × 16cm depth). 15 cuttings were planted in each planter for a total of 90 cuttings planted for each of the types. The nursery bed for this experiment was soil for gardening (Kanuma soil). The percentage of blooming leaves of Lindera umbellata Thunb.was 80 percent and var. membranacea was 70 percent. However, the percentage of rooting for Lindera umbellata Thunb. was only 5 percent and var. membranacea was 15 percent. 15% of var. membranacea had callus. A survival rate of Lindera umbellata was 20% and var. membranacea was 30%. Measurement of data by SPAD of stocks with roots or callus were significantly higher than stocks without them (p<0.005).
Keywords: cuttings, Lindera umbellata Thunb, Lindera umbellata Thunb. var. membranacea (Maxim.) Momiyama -
Seminar and practice of Silviculture Laboratory of Tokyo University of Agriculture (TUA) Reviewed
Iwao UEHARA, Megumi TANAKA, Izumi SUGAWARA
Chubu Forestry Research 65 55 - 58 2017.04
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
The Forest Science Department (annual capacity: 140 students) of Tokyo University of Agriculture (TUA) has a special education system which contains 9 laboratories. These 9 laboratories are Silviculture, Forest Ecology, Erosion Control and Revegetation Engineering, Forest Engineering, Forest Products Chemistry, Wood Science and Technology, Forest Management, Forest Policy, and an electron microscope laboratory. In each laboratory students participate in seminars, experiments, filed study, and a graduate thesis research. Junior students are selected and are able to join in one of the laboratories. Silviculture is a subject which consists of various fields such as forest ecology, tree physiology, forest soil, forest aesthetics, and so forth. Therefore, Silviculture Laboratory also includes various field seminars, experiments, and field studies. The studies are mainly practiced in the field which aims to allow the acquisition of multiple viewpoints. The topics include seeds, cuttings, nurseries, tree observations, field trips, studies at Okutama Practice Forest, Fuji experiment forest, and other forest fields. Junior students learn various skills of the studies and decide on their own graduate thesis theme. We surveyed students through a questionnaire in 2015 and 2016 and found vegetation survey is a key aspect among the practices.
Keywords: seminar, training, Silviculture laboratory, Tokyo University of Agriculture (TUA) -
身近な森林環境を利用したカウンセリングの特徴―「傾聴散策カウンセリング」の事例から― Reviewed
竹内啓恵.長井聡里.川畑真理子.上原巌
関東森林研究 68 ( 2 ) 105 - 108 2017.04
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Attempts of cuttings utilizing Cryptomeria japonica, Chamaecyparis obtusa and Larix kaempferi wood for nursery bed. Reviewed
Iwao UEHARA
Kanto Journal of Forest Research 67 ( 2 ) 259 - 262 2016.11
Language：English Publishing type：Research paper (scientific journal)
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Antibacterial effect of the pyroligneous acid of dumped mushroom bed Reviewed
Iwao UEHARA, Magumi TANAKA
森林応用研究 25 ( 2 ) 9 - 11 2016.10
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
Annually, enormous amounts of mushroom beds are dumped throughout Japan. Dealing with them is one of the difficult problems among mushroom farmers. In addition, the farmers fumble to find effective practical uses for these discarded mushrooms. This research examined the bacterial resistance of pyroligneous acid which is made from dumped mushroom beds. Experiments used Escherichia coli and Staphylococcus aureus subsp.aureus which are common bacteria in daily life. The experiment results showed pyroligneous acid was able to resist the growth of E.coli and Staphylococcus.
Keywords: dumped mushroom bed, pyroligneous acid, antibacterial effects, Escherichia coli, Staphylococcus aureus
キノコの人工栽培の際に生じる廃培地の処理は、キノコ農家にとって、大きな問題となっており、毎年膨大な量の廃培地が生じ、その対策や有効活用が模索されている。本研究では、その廃培地の製炭利用にあたり、その製炭化過程で発生する木酢液に着目をし、その抗菌試験をおこなった。抗菌の対象は、日常生活におけるありふれた菌として大腸菌と黄色ブドウ球菌を扱った。試験の結果、廃培地の木酢液には、ある程度の抗菌作用を持つことが認められた。
キーワード：キノコ廃培地，廃おがオイル，大腸菌，黄色ブドウ球菌 -
大阪府営服部緑地を利用した傾聴散策カウンセリングの試み Reviewed
竹内 啓恵 , 長井 聡里 , 川畑 真理子 , 上原 巌
東京農業大学農学集報 61 ( 2 ) 84 - 92 2016.09
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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里山を使用した傾聴散策カウンセリングの試みー長時間勤務の女性を対象としてー Reviewed
竹内啓恵.長井聡里.川畑真理子.上原巌
森林保健研究 1 14 - 24 2016.09
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Realization of urban forest utilization as healing place -Attempts of promoting human health at urban forest- Invited Reviewed
UEHARA Iwao
Journal of Environmental Information Science 45 ( 2 ) 9 - 14 2016.08
Language：Japanese Publishing type：Research paper (scientific journal)
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Prospect and subjects of silviculture training at practice forest of Tokyo University of Agriculture Reviewed
Iwao UEHARA, Magumi TANAKA, Izumi SUGAWARA
中部森林研究 64 21 - 24 2016.04
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
During the 1970’s, there were 24 universities across Japan which had a forestry department. However, the forestry departments have lost their names or changed their name to Forest Science, Natural Resources, Bio-Environment, and so forth. This was done because the new departments have been trying to reform and reorganize themselves to obtain a more efficient curriculum. They have been also pushed by some problems trending at the times, social issues, the forestry business cycles, natural environment consciousness, and also the changing needs of the students. This research focuses on the silviculture training at a practice forest belonging to the Tokyo University of Agriculture (TUA). Silviculture training is a compulsory subject for sophomore students in the Forest Science Department of TUA. This study reports the aim, contents, number of students attending on training, as well as the teaching staff structure. In addition, we surveyed the students who attended the training in 2014 and 2015 and obtained input through a questionnaire directed towards the students. We also discuss the problems and prospects pertaining to silviculture training within a college education system.
Keywords: training, silviculture, practice forest, Tokyo University of Agriculture (TUA) -
南相馬とその周辺における東日本大震災以降の植生と植生景観の変動 Reviewed
中村 幸人 , 大渕 香菜子 , 西野 文貴 , 上原 巌
生態環境研究 23 ( 1 ) 51 - 77 2016
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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働く女性を対象とした森林での傾聴散策カウンセリングの試み
竹内啓恵.長井聡里.川畑真理子.上原巌
関東森林研究 66 ( 2 ) 257 - 261 2015.06
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Basic study on the antibacterial effects of volatile fragrance of Cercidiphyllaceae japonicum and Cedrus deodara Reviewed
Iwao UEHARA, Hiroe TAKEUCHI, Masatoshi KURAMOTO, Megumi TANAKA
関東森林研究 65 ( 2 ) 331 - 334 2014.07
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
This research examined the antibacterial effects of volatile fragrance of leaves of Cercidiphyllaceae japonicum and Cedrus deodara which have strong fragrance. The samples were collected 24 hours on 21st to 22nd of June and 10th to 11th of August in 2012. We used Escherichia coli and Staphylococcus aureus subsp. aureus which are ordinary bacterium in our daily life. The experiment results showed the volatile fragrance of C. japonica could resist the growing of both of bacteria in August, because of the fact that the hours of sunlight was 5.9 hour, however in the condition of 0.2 hour of sunlight in June, the resistant effects were not found on the both of bacteria. C. deodara did not show the antibacterial effects on the both of bacteria in June, but on the S. aureus subsp. aureus on the experiment in August, the antibacterial effects were found. These results suggested the antibacterial effects of volatile fragrance of trees were individually different and they were controlled by sunlight, seasonal, and individual condition.
Keywords: antibacterial effects, Cercidiphyllaceae japonicum, Cedrus deodara, Escherichia coli, Staphylococcus aureus subsp. aureus -
都市部の森林公園を活用した働く女性の保健休養の事例 Reviewed
竹内啓恵、上原巌
関東森林研究 65 ( 2 ) 237 - 240 2014.06
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Healing effects of urban green environment Reviewed
UEHARA Iwao
中部森林研究 ( 62 ) 163 - 164 2014.03
Language：English Publishing type：Research paper (scientific journal)
In the psychological and counseling fields, many studies have been attempted by various methods. This research attempted
to examine the counseling effects utilizing urban green environment which were on the university campus and an urban park in
Setagaya region in Tokyo. I researched how university students’ mood changed in the building and in the outdoor green space on the
campus and also how clients’ conversation changed by regular counseling by walking in the urban park. Both results showed that
participants gained change of air effects by moving to unusual space from ordinary place, improving of their mood, consciousness of
accepting diversity of facing and solving problems, and so forth. These results suggested utilizing urban green environment could have
psychological and counseling effects.
Keywords: psychological effects, counseling, urban green environment, campus, urban park -
奥多摩演習林における野ネズミの生息地と微生息環境利用 Reviewed
小島裕貴・渡邉純子・上原巌・菅原泉・松林尚志・佐藤明
関東森林研究 65 205 - 208 2014.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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奥多摩のスギ人工林における強度な林冠疎開後の樹冠成長の推移 Reviewed
出口謙一、菅原 泉、上原 巌、佐藤 明
関東森林研究 64 ( 2 ) 17 - 20 2013.10
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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針葉樹林および広葉樹林における野ネズミの行動とミズナラ稚樹の発生消長 Reviewed
小島裕貴，佐藤明・菅原泉・上原巌
関東森林研究 64 ( 2 ) 69 - 72 2013.09
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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富士青木ヶ原樹海の林床に存在する微生物密度の季節変化 Reviewed
田中恵・濱口顕寛・上原巌・菅原泉・佐藤明
関東森林研究 64 ( 1 ) 45 - 48 2013.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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The growth of Ginkgo biloba and Populus nigra cuttings by providing distilled water of trees Reviewed
Iwao UEHARA, Masatoshi KURAMOTO, Hiroe TAKEUCHI, Megumi TANAKA (Tokyo University of Agriculture)
関東森林研究 64 ( 1 ) 73 - 76 2013.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
It has been known that the distilled water made from tree leaves, which contain essential oil, sometimes have bacteria resist effects. This research examined the stimulating effects of distilled water of tree leaves for the growth of the cuttings. Experiments used cuttings of Ginkgo biloba and Populus nigra. Distilled water was made of leaves of Ginkgo biloba, Populus nigra, Cinnamomum camphora, and Chamaecyparis pisifera. The experiment results of Ginkgo bibba cuttings showed the distilled water of Cinnamomum camphora and Chamaecyparis pisifera could stimulate the growth, but not for Populus cuttings in contrast. In addition, the distilled water of Cinnamomum camphora and Populus nigra showed some bacteria resistance effect for Escherichia coli.
Keywords: cutting, distilled water, Ginkgo biloba, Populus nigra
樹木の精油などの成分が溶け込んだ芳香蒸留水には、抗菌作用を持つものがあることが知られている。本研究では、挿し木苗の養成にその芳香蒸留水がどのような効果をもたらすかを考察した。供試材料には、ポプラ、イチョウの挿し木苗を用い、イチョウには、イチョウ、クスノキ、サワラの芳香蒸留水、ポプラには、ポプラ、クスノキ、サワラの芳香蒸留水を定期的に与え、通常の水道水を施した対象区との成長比較を行った。その結果、イチョウの挿し木苗においては、クスノキ、サワラの芳香蒸留水を施した挿し木苗は成長が良好であり、それとは対照的にポプラの挿し木苗では芳香蒸留水を施した方が、成長が劣る結果が得られた。また、クスノキとポプラの芳香蒸留水に大腸菌に対する抗菌作用がやや認められた。
キーワード：挿し木，芳香蒸留水、イチョウ，ポプラ -
Antibacterial effects of volatile fragrance and distilled water of Cinnamomum camphora leaves Reviewed
UEHARA Iwao, KURAMOTO Masatoshi, TAKEUCHI Hiroe, TANAKA Megumi (Tokyo University of Agriculture)
中部森林研究 61 171 - 174 2013.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
This research examined the bacteria resistance effects by volatile fragrance and distilled water of leaves of Cinnamomum camphora. The samples were collected for 24 hours on 21st to 22nd of June and 10th to 11th of August in 2012. We used Escherichia coli and Staphylococcus aureus which were ordinary bacterium in daily life. The experiment results showed the volatile fragrance could resist the glowing of both of bacteria in August, because the hour of sunlight was 5.9 hour, however in the condition of 0.2 hour of sunlight in June, the resistant effects were not shown on the both of bacteria. On the August experiment, distilled water could resist for E. coli, but not for Staphylococcus. These results suggest the antibacterial effect s of Cinnamomum camphora leaves were different by sunlight and seasonal condition.
Keywords: Cinnamomum camphora, antibacterial effects, Escherichia coli, Staphylococcus aureus
本研究では，クスノキを供試材料とし，その葉から放出される芳香揮発成分および芳香蒸留水の抗菌作用について，日常の身近な細菌である大腸菌と黄色ブドウ球菌を用い，6月21～22日と8月10～11日にそれぞれ24時間芳香をトラップして実験を行った。実験の結果，実施日に日照時間が0.2時間だった6月の実験条件下では大腸菌，黄色ブドウ球菌の双方に対してクスノキの葉の芳香による菌体の増殖を抑制する作用は認められなかったが，日照時間が5.9時間だった8月の条件下においては双方の菌の増殖を抑制する効果がある程度認められた。また, 8月に行われた芳香蒸留水による抗菌作用の実験では，大腸菌に対してはその効果が認められたが，黄色ブドウ球菌に対しては認められなかった。これらの結果から，クスノキの葉の抗菌作用は，日照条件や季節によって異なることが示唆された。
キーワード：クスノキ, 抗菌作用，大腸菌，黄色ブドウ球菌 -
森林を学ぶ学生を対象とした下刈作業と森林散策における気分・ストレスの比較 Reviewed
竹内啓恵..上原巌
関東森林研究 64 1 - 4 2013.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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針葉樹林を伐開し広葉樹植栽した林地での中型土壌動物相の変化 Reviewed
栗原文裕、田中 恵、菅原 泉、上原 巌、佐藤 明
関東森林研究 63 ( 2 ) 73 - 76 2012.10
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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An attempt of forest therapy workshops Chichibu City Office workers Reviewed
Iwao UEHARA (Tokyo University of Agriculture, Tokyo 156-8502), Hiroe TAKEUCHI (The Graduate School of Tokyo University of Agriculture, Tokyo 156-8502)
Kanto Journal of Forest Research 63 ( 2 ) 153 - 157 2012.09
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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森林を学ぶ学生を対象とした森林散策と下刈り作業との気分・ストレスの比較 Reviewed
竹内啓恵、上原巌、佐藤明
関東森林研究 63 ( 2 ) 149 - 152 2012.09
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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スギ人工林に設けたサイズの異なる群状伐採地に植栽した広葉樹の初期成長 Reviewed
村尾未奈・横山哲大・佐藤明・上原巌・菅原泉
関東森林研究 63 ( 1 ) 31 - 34 2012.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Basic study on the bacteria resistance effects of Cinnamomum camphora and Eucalyptus Reviewed
UEHARA Iwao, TANAKA Megumi
関東森林研究 63 ( 1 ) 121 - 122 2012.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
This research examined the bacteria resistance effects by volatile fragrance of Cinnamomum camphora and Eucalyptus grobulus. Experiments used Escherichia coli and Staphylococcus which were ordinary bacterium in daily life.. The experiment results of Cinnamomum camphora showed the volatile fragrance could resist the glowing of Escherichia coli, but not for Staphylococcus. On the other hand, the experiment results of Eucalyptus grobulus showed the volatile fragrance could resist the glowing of Staphylococcus, but not for Escherichia coli.
Keywords: bacteria resistance effects, Cinnamomum camphora, Eucalyptus, Escherichia coli, Staphylococcus
本研究では，クスノキとユーカリを供試材料とし，その葉から放出される芳香揮発成分の抗菌作用について，日常の身近な菌である大腸菌とブドウ球菌を用いて実験を行った。実験の結果，クスノキの芳香揮発成分は大腸菌に対して，一方，ユーカリの芳香揮発成分ではブドウ球菌に対して，菌体の増殖を抑制する作用が認められた。
キーワード：抗菌作用，クスノキ，ユーカリ，大腸菌，ブドウ球菌 -
A case study of forest therapy utilizing public forest park by the rural hospital. Reviewed
Iwao UEHARA (Tokyo Univ. of Agri., 1-1-1 Sakuragaoka Setagaya-ku Tokyo 156-8502), Shiori TAKIZAWA, Yoshifumi TAKAI, Azusa FUJITA, Hayato FUJITA (Tenryu Hospital), Tomohisa GOJO (Hamamatsu Medical Univ.)
Kanto Journal of Forest Research 63 ( 1 ) 131 - 134 2012.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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A case study of forest therapy utilizing deciduous secondary woods at Hokkaido rural hospital Reviewed
Iwao UEHARA (Tokyo Univ. of Agri.,1-1-1 Sakuragaoka Setagaya-ku Tokyo 156-8502), Shiori TAKIZAWA, Tomoko KIKCHI (Uenae Hospital), Takeshi KUSAKARI (Hokkaido Development Society)
Kanto Journal of Forest Research 63 ( 1 ) 127 - 130 2012.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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A case study of forest therapy utilizing un-tended Criptmeria japonica and Chamaecyparis obsusa forests by the rural hospital in Kyushu. Reviewed
Iwao UEHARA (Tokyo Univ. of Agri., 1-1-1 Sakuragaoka Setagaya-ku Tokyo 156-8502), Shiori TAKIZAWA, Satoru MEDA, Yoshiteru WASAKI, Ryoske YAMANAKA, Kimiomi GENZONO, Kumiko SHINTANI, Yusuke TANAKA, Tsuyoshi DEMIZU (Kirishimasakuragaoka Hospital)
Kanto Journal of Forest Research 63 ( 1 ) 123 - 126 2012.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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奥多摩における針葉樹人工林と広葉樹二次林内での野ネズミ類個体群動態 Reviewed
小野 晃一 , 勝又 達也 , 菅原 泉 , 上原 巌 , 佐藤 明
東京農業大学農学集報 56 ( 1 ) 60 - 67 2011.06
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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A case study of the forest therapy by utilizing prefectural forest park by a social institution for people with mental disabilities Reviewed
Iwao UEHARA
Journal of Chubu Forest Research ( 59 ) 153 - 156 2011.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Healing of the tree (Ⅱ) -the outline of tree healing in Germany- Reviewed
Iwao UEHARA
Journal of Chubu Forest Research ( 59 ) 149 - 152 2011.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Medical use of the plants in mountain villages (Ⅱ) -Medical herb plants in Nagano prefecture- Reviewed
Iwao UEHARA
Chubu Forest Research 59 143 - 148 2011.03
Language：Japanese Publishing type：Research paper (scientific journal)
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A case survey on the pine wood nematode disease in Nagano city
Kanto Journal of Forest Research ( 61 ) 195 - 198 2010.07
Language：Japanese Publishing type：Research paper (scientific journal)
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Case study on the forest therapy workshop utilizing un-tended woods Reviewed
( 61 ) 233 - 236 2010.07
Language：Japanese Publishing type：Research paper (scientific journal)
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奥多摩町における森林セラピー事業の現状と課題 Reviewed
市川理沙・佐藤孝吉・上原巌
関東森林研究 61 37 - 40 2010.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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間伐率が異なる4林分における林内降雨と土壌流亡 Reviewed
小林理志・佐藤明・菅原泉・上原 巌・舘紗矢香・荒井さやか・浅井孝太
関東森林研究 61 183 - 186 2010.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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スギ人工林における林道からの距離とヤスデ類との関係 Reviewed
米山枢・深江麻利子・菅原泉・上原巌・佐藤明
関東森林研究 61 171 - 174 2010.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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マダケ林がヒノキ人工林に侵入する過程におけるササラダニ類(Oribatid Mites）の種組成の変化 Reviewed
福永幸代・鳥越優希・菅原泉・上原巌・佐藤明
関東 61 167 - 170 2010.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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ギャップにおけるオオバアサガラの生育特性とシ力食害の特徴 Reviewed
西尾恵介・高橋幸弘・菅原泉・上原巌・佐藤明
関東森林研究 61 89 - 94 2010.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Medical use of the plants in mountain villages (I) -Medical woody plants in Nagano Prefecture- Reviewed
( 58 ) 131 - 136 2010.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Healing of the tree (I) -The outline of healing utilizing woody plants-
( 58 ) 137 - 138 2010.03
Language：Japanese Publishing type：Research paper (scientific journal)
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オオバアサガラ（Pterostylax hispida）の果実の特徴と発芽特性 Reviewed
西尾 恵介 , 兜森 早智 , 菅原 泉 , 上原 巌 , 佐藤 明
日本森林学会誌 91 ( 4 ) 295 - 298 2009.08
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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オオバアサガラ（Pterostyrax hispada）の挿し木に及ぼす挿し穂の長さと発根促進法に関する研究 Reviewed
高橋 幸弘 , 西尾 恵介 , 菅原 泉 , 上原 巌 , 佐藤 明
東京農業大学農学集報 54 ( 1 ) 51 - 58 2009.06
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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The making process of Terasaki's Tree Form classification and his thinning type Reviewed
( 60 ) 145 - 148 2009.03
Language：Japanese Publishing type：Research paper (scientific journal)
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The possibilities of introducing forest work on the forest therapy
Kanto Journal of Forest Research ( 60 ) 257 - 260 2009.03
Language：Japanese Publishing type：Research paper (scientific journal)
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The condition of injured trees by Typhoon 9th in 2007 in Karuizawa Town of Nagano Prefecture
Chubu Forest Research ( 57 ) 255 - 257 2009.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Attempts of forest therapy workshop for teachers
Chubu Forest Research ( 57 ) 101 - 105 2009.03
Language：Japanese Publishing type：Research paper (scientific journal)
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The injuried conditions of Quercus mongolica by Platypus quercivorus in the north region of Nagano Prefecture
( 57 ) 283 - 286 2009.03
Language：Japanese Publishing type：Research paper (scientific journal)
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台切後3年間におけるオオバアサガラ（Pterostyrax hispida）の萌芽特性 Reviewed
高橋 幸弘 , 菅原 泉 , 上原 巖
日本森林学会関東森林研究 60 87 - 90 2009.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of Counseling Workshops Utilizing Familiar Woodland
上原 巌
Proceedings of the 8th International People-Plant Symposium on Exploring Therapeutic Powers of Flowers, Greenery and Nature International Society for Horticultural Sciencepp. 283 - 288 2008.06
Language：English Publishing type：Research paper (international conference proceedings)
The healing functions of woodland have become more important for our stressful modern lives. Counseling works also have important meaning in our daily lives and working places. Active counseling works can be physically effective in outdoor exercise and recreational activities, too. Therefore, counseling works utilizing familiar woodland might have effects and possibilities therapeutically. This paper shows some case studies of Self Counseling (SC) and Structured Group Encounter (SGE) at several different woodland environments in Japan. Through attempting the counseling activities in the woods, participants showed affirmative changes in their ability to accept themselves, communicate with each other, to become more familiar with woods, and so forth. These results show that both SC and SGE utilizing a familiar woodland environment can be psychologically effective.
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Fallen leaves of Magnolia in Karuizawa Town, Nagano Prefecture in 2007
Chubu Forest Research ( 56 ) 190 - 193 2008.04
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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A case of forest therapy workshop by utilizing a public forest park Reviewed
Iwao UEHARA
Chubu Forest Research ( 56 ) 186 - 189 2008.04
Language：Japanese Publishing type：Research paper (scientific journal)
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Physiological and mood changes by forest workshop -a case of utilizing proceeds - sharing forest in Takao, Tokyo- Reviewed
Iwao UEHARA
Chubu Forest Research ( 56 ) 181 - 185 2008.04
Language：Japanese Publishing type：Research paper (scientific journal)
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An attempt of analyzing the atmosphere cleanness of forest health resorts by Lichen Flora Reviewed
Iwao UEHARA
Chubu Forest Research ( 56 ) 190 - 193 2008.04
Language：Japanese Publishing type：Research paper (scientific journal)
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林齢の異なるスギ人工林におけるミミズの個体数密度と種組成 Reviewed
安藤麻菜・山中理恵子・米山枢・菅原泉・上原厳・佐藤明
関東森林研究 59 199 - 202 2008.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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針葉樹人工林と広葉樹二次林における野ネズミ2種の生息地選択 Reviewed
勝又 達也 , 菅原 泉 , 上原 巌
日本森林学会関東森林研究 59 243 - 246 2008.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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間伐強度を異にしたヒノキ人工林の5年間の現存量変化 Reviewed
日下 慶 , 菅原 泉 , 上原 巌
日本森林学会関東森林研究 59 177 - 180 2008.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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異なる光環境下に植栽したオオバアサガラ(Pterostyrax hispida SIEB. et Zucc.)の生育特性 Reviewed
高橋 幸弘 , 菅原 泉 , 上原 巌
日本森林学会関東森林研究 59 191 - 194 2008.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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間伐強度の異なるヒノキ人工林における再間伐前後の土壌流亡量の変化と林床植生 Reviewed
伊藤 万里絵 , 菅原 泉 , 上原 巌
日本森林学会関東森林研究 59 211 - 214 2008.03
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
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Forest as a treatment space - Case studies of Forest Therapy Invited Reviewed
Iwao UEHARA
17 ( 1 ) 26 - 29 2008.01
Language：Japanese Publishing type：Research paper (scientific journal)
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An attempt of reforest activities and forest therapy in the community forest in the residential quarter Reviewed
Applied Forest Science 16 ( 2 ) 101 - 107 2007.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Efeccts of Forest Bathing -Health promotion by forest walking- Invited Reviewed
Iwao UEHARA
Practical Occupational Therapy 4 ( 4 ) 277 - 281 2007.08
Language：Japanese Publishing type：Research paper (scientific journal)
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Case studies of three famous people who stayed in forests for their recuperation -Cases of Soseki NATSUME, Mieko KAMIYA, and Ludwig van BEETHOVEN- Reviewed
Iwao UEHARA
Chubu Forest Research ( 55 ) 225 - 226 2007.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Succession of Forest Therapy Projects in Shinanomachi Town of Nagano Prefecture, Japan Reviewed
Iwao UEHARA
Chubu Forest Research ( 55 ) 227 - 230 2007.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Possibility of rural community creation centered by forest therapy Invited Reviewed
Iwao UEHARA
Journal of Environmental Information Science 35 ( 4 ) 20 - 25 2007.01
Language：Japanese Publishing type：Research paper (scientific journal)
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Possibility of forest therapy -New utilization of the forest amenities Invited Reviewed
Iwao UEHARA
Forest Science ( 48 ) 4 - 8 2006.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Forest Therapy -Forest amenities and human beings- Invited Reviewed
Iwao UEHARA
15 ( 2 ) 3 - 10 2006.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of Structured Group Encounter (SGE) on Outdoor Treatment Activities of Developmental Disabilities by Utilizing Community Forests. Reviewed
上原 巌
景観園芸研究 ( 7 ) 95 - 104 2006.03
Language：English Publishing type：Research paper (bulletin of university, research institution)
Structured Group Encounter (SGE) is a useful, preventive, and developnetal counseling group activity. SGE is used for people to understand each other and develop relationships at work places, schools, social welfare institutions, and so forth. It is generally used indoors but also has potential as an outdoor activity. Individuals with developmental disavilities, especially mental retardation sometimes have comunicative disabilities and easily acquire mental and emotional frustration. SGE does not always demand verbal communication, so it can be suitable activity and a communication work for persons under mental disability treatment. It has been shown that outdoor treatment activities can reduce inner frustration of the clients with developmental disabilities and ease their panic reaction or behavior problems. Active SGE can also have positive effects for their physical exercise and recreational activities, because they are sometimes restiricted by their behavior disabilities. Therefore, SGE on outdoor treatment activities might have effects and possibilities as a treatment for developmental disabilities. This report shows a case study at an institution for people with developmental disabilities and considers the effects of SGE on outdoor treatment activities by utilizing community forests. Through attmenpting one and a half year of SGE treatment activities at commmunity forests, three participants showed changes in their ability to communicate with clients and staff, make the relationships, decrease behavior problems, improve daily life abilities. These results suggest SGE on outdoor treatment activities have certain effects and possibilities of utilizing community forsts for treatment activities of developmental disabilities.
発達障害者を調査対象とし、里山での野外活動にカウンセリングの「構成的グループエンカウンター（SGE）」の手法を取り入れて実践した結果を報告した。約1年半の野外SGEの活動体験によって、3人の事例対象者には、、コミュニケーションにおいて良好な向上変化が認められたほか、障害行動の減少などが認められた。
pp.95-104. -
Introduction of forest therapy and its possibility Invited Reviewed
Iwao UEHARA
AROMA RESEARCH 6 ( 4 ) 2 - 9 2005.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Possibility of forest therapy for children Invited Reviewed
Iwao UEHARA
Health Science of children 6 ( 1 ) 36 - 39 2005.11
Language：Japanese Publishing type：Research paper (scientific journal)
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Trend of forest therapy Invited Reviewed
Iwao UEHARA
15 ( 2 ) 28 - 33 2005.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Changes of Egogram and Self-estimation of the students before and after experiencing social welfare paractices Reviewed
UEHARA Iwao
Annual research reports of Tokai Women's Univeristy 23 199 - 203 2004.03
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Tokai Women's University
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Effects of self-counseling in the forest Reviewed
Iwao UEHARA
Chubu Forest Research ( 52 ) 127 - 129 2004.02
Language：Japanese Publishing type：Research paper (scientific journal)
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An attempt of horticulture and forest therapies at the mountain side institution for mental retardation Invited Reviewed
Iwao UEHARA
Journal of Occupational Therapy in Nagano Prefecture 21 7 - 12 2003.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Forest Therapy -The outline and possibility- Invited Reviewed
Iwao UEHARA
Journal of Gifu Mental Health Welfare 40 ( 1 ) 173 - 180 2003.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Reading seminer of "Reason of Life" Reviewed
UEHARA Iwao
Annual research reports of Tokai Women's Univeristy 22 119 - 131 2003.03
Language：Japanese Publishing type：Research paper (scientific journal)
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An attempt of learning forest therapy by a civil group Reviewed
Iwao UEHARA
Chubu Forest Research ( 51 ) 137 - 140 2003.02
Language：Japanese Publishing type：Research paper (scientific journal)
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Senior high school teacher's consciousness about recreation and rest at forest -A case study at Saku region of Nagano Prefecture Reviewed
Iwao UEHARA
Chubu Forest Research ( 51 ) 141 - 144 2003.02
Language：Japanese Publishing type：Research paper (scientific journal)
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Forest and mind -Psychological effects of forest therapy Invited Reviewed
Iwao UEHARA
Journal of Forest Culture Research ( 23 ) 35 - 43 2002.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Making a Health Resort in Bad Woerishofen, Germany Reviewed
Iwao UEHARA
Journal of the Japanese Institute of Landscape Architecture 64 ( 5 ) 493 - 496 2001.05
Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of Outdoor Activities in the Treatment of Mental Disabilities Invited Reviewed
Iwao UEHARA
Bulletin of the Shinshu University Forests ( 37 ) 31 - 162 2001.03
Language：Japanese Publishing type：Research paper (scientific journal)
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"Waldkindergarten (Forest Kindergarten)" in Germany -A case study of infant education utilizing natural and forest environment- Reviewed
Iwao UEHARA, Moni HEPP-HOPPENTHALER
Chubu Forest Research ( 49 ) 112 - 113 2001.02
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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The natural environment of Bad Woerishofen, a Kneipp health resort in Germany Reviewed
Iwao UEHARA, Gerhard LIMMER
Chubu Forest Research ( 49 ) 109 - 110 2001.02
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Importance of Outdoor Activities in the Treatment of Mental disabilities Reviewed
Iwao UEHARA
Journal of Environmental Education 9 ( 2 ) 24 - 32 2000.03
Language：Japanese Publishing type：Research paper (scientific journal)
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Importance of Multiple Outdoor Activities for Persons with Mental Disabilities. Reviewed International journal
Iwao UEHARA, Seigo Itoh
Journal of Therapeutic Horticulture 10 22 - 27 2000.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
Outdoor activities, including therapeutic horticulture, have become important recreations for older adults, physical rehabilitation patients, and individuals with developmental disabilities. Many horticultural activities have been provided dor these groups of people and the the results of these activities have been reported. Therapeutic horticulture involving the use of plant material provides psychological and physical benefits, and it has been one aspect of physical,physiological,and psychological restoration on health care setting. For persons with develomental disabilities, outdoor activities have an important role in sensory stumulation, stress relief, and consciousness of both self and surroundings. Therefore, horticulture, gardening, agriculture, and forest recreation are sometimes regarded as outdoor treatment activities for individuals with developmental disabilities. The physical nature of agricultural, horticultural, and landscaping jobs has the benefit of reducing bahevior problems. Horticultural therapy also has been cited as a method for increasing ability to stay on work tasks, developing acceptable work habits, and increasing the ability to follow direction. Natural environments are not the only lind of restorative environments, but they seem to have substantial advantages over many other settings. From accounts of gardening experiences to hiking in the wilderness, several personal stories testify to the magical healing power of being in the nature, and, in paticular, forest settngs have the ability to provide suitable environmantal conditions for the treatment of in dividuals with developmental disabilities. Forest-based activities can provide total treatment including physical rehabilitation, emotional restoration, stress relief, therapeutic recreation, and communication stimulation, among others. This research descibes case studies of oersons with devalopmental dosabilities and their involvement with multiple horticultural and forest activities at Shin'ai no sato Matsukawa, a treatment facility for persons with developmental and physical disabilities in Matsukawa Town, Nagano Prefecture, Japan.
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知的障害者更生施設の利用者を対象に、里山における整備作業や、特に除伐、間伐材の搬出作業を作業療法の一環として行った結果、調査対象者には、身体能力、コミュニケーション能力の向上、感情の安定化、基本的生活能力の向上のほか、問題行動の減少、てんかん発作の減少などが認められ、また長期間にわたって室内と森林内での脳波（α波）の測定比較を行ったところ、森林内でのα波の発生比率の方が有意に高かったことなどを報告した．
Uehara,I.,Itoh.S
本人が主たる研究・執筆者
pp.22-27.
Itoh.S
pp.22-27 -
Instructing staff's estimation about outdoor activities at a treatment institution for developmental disabilities - A case study of a rural institution in Nagano Prefecture. Reviewed
Uehara, I., Gabriel.M
中部森林研究 48 89 - 92 2000.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
This paper shows the staff's estimation and consideration about the treatment effects of outdoor activities attempted at the instituion for persons with developnetal disabilities in Nagano Prefecture, Japan. By interviewing each staff menber, it was made known that most of them think the outdoor activitites are important for residents and the activities have certain tretment effects. They also would like to continue the outdoor activities now and in the future, as 40% of the residents have some physical handicap. As for present ploblems, they refered to safety and environmental arrangement as "hardware" and instructing ways of outdoor activities as "software".
山間部の社会福祉施設に勤務する職員を対象に、野外療育活動に対する期待をアンケートと面接による調査を行った．調査の結果、施設利用者の約４割が何らかの身体障害を抱えている場合であっても、施設職員、利用者共に地域の野外・山林に出かけての活動を希望していること、またそのために里山整備などのハード面と、実行プログラムのソフト面を整えることを重要視していることが明らかになった．
Uehara,I. Gabriel.M
本人が主たる研究・執筆者
pp.89-92.
Gabriel.M
pp.89-92 -
Effects of forest recreations in the treatment of mental disabilities Reviewed
Uehara, I., Sasaki.Y,Yamada.C
中部森林研究 47 167 - 170 1999.12
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：日本森林学会中部支部
Forest amenities have various important meanings in our modern lives. Forests and woods supply the recreational space and other amenities for people's needs for nature. Forest recreation is important not only for healthy people, but also for persons with mental or physical disabilities. This paper reconsiders some forest recreations in the treatment of mental disabilities at an institution for persons with mental disabilities in Nagano prefecture,Japan. After a half and a year experiencing forest recreations of forest work and walks, the changes in bahevior, remedies, and abnormal behaviors of the clients of the institution were observed and evaluated. These results suggest that forest recreation affects treatment of mental disabilities.
知的障害者更生施設の利用者を対象に、里山における整備作業や、特に除伐、間伐材の搬出作業を作業療法の一環として行った結果、調査対象者には、身体能力、コミュニケーション能力の向上、感情の安定化、基本的生活能力の向上のほか、問題行動の減少などが認められ、また18ヶ月にわたって室内と森林内での脳波（α波）の測定比較を行ったところ、森林内でのα波の発生比率の方が有意に高かったことなどを報告した．
Uehara.I.,Sasaki.Y.,Yamada.C
本人が主たる研究・執筆者
pp.167-170. -
Significance and effects of forest treatment activites Reviewed
Iwao UEHARA
Forest Science ( 28 ) 52 - 54 1999.12
Language：Japanese Publishing type：Research paper (scientific journal)
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An Attempt of Multiple Counseling Approaches to a Client with Autistic Disabilities Reviewed
上原 巌
カウンセリング研究 32 ( 3 ) 301 - 310 1999.12
Language：English Publishing type：Research paper (scientific journal)
today, counseling is being done in many ways.However, cliens who need counseling do not always have good communication ability. Some clients who have mental disabilities or communication disorders do not have communicative abilities. Autism is a syndrome of impairmants in the development of reciprocal social interactions, verbal and nonverbal communication skills.Many persons with autistic disabilities require counseling.This paper shows a case study of a client with autistic disabilities living in a treatment institution and the effects of multiple counseling approaches by communicative and environmental elements.By receiving these counseling approaches for period of one year, the communication ability, daily life, and behavior of the client improved and autistic disabilities were also eased. These results suggets that multiple counseling approaches have a positive effect to counseling clients having communication disabilities like autism.
自閉症の抱えるコミュニケーション障害を考慮し、環境面とコミュニケーションの双方の面から多角的なカウンセリング・アプローチを行った結果、調査対象者には、コミュニケーションの能力のほか、日常生活や行動面においても自閉症状に緩和が認められたことを報告し、森林・自然環境をカウンセリング空間として利用する可能性を提示した．
pp.301-310 -
The possibility of forest activities in the autistic disabilities treatment by utilizing the rural forest Reviewed
Uehara, I, Sasaki.K
レジャーレクリエーション研究 ( 40 ) 59 - 67 1999.08
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
Forest amenity is not only important for general forest recreational activities but also treatment, rehabilitation, and therapy for people with mental or physical disabilities. It is not, however, easy to find suitable forest sites for the treatment activities. Autism is known as one of the disabilities of the brain.The main symptoms are discommmunication with others, cogtive impairments, and abnormal behaviors.The reason for it's occurence has not been made clearyet and a radical cure for it has not been discovered, either. First of all, the treatment and rehabilitation of mental and cognitive disability like autism is generally geared towards training the body. However, many autistic persons have often been restricted in their experiences in ordinary life, society, and even in outdoor experiences, Because of their abnormal behaviors. Therefore, having experiences in outdoors to train and stimulate body functions has an important meaning as one of the treatment ways.This paper aims to show the changes of clients in a treatment insitution through their involvement in forest activities which consisted of work and recreation in the regional forest in Nagano Prefecture,Japan. Because of their involvement in forest activities over a three year period, according to the improvement of working abilities, the communication abilities of most of these clients have improved.Autistic conditions have also eased and their general behaviors and basic life abilities have come to be normalized.These empirical results suggest the forest activities have the possibility of effective autism treatment and also present the possibility of the useful utilizing of the rural forest.
長野県の自閉症療育施設において森林作業と散策活動を中心とした療育活動を３年間行った結果、50名の調査対象者のほとんどに身体能力、コミュニケーション能力の向上や、異常行動の緩和などの効果が認められた．これらの結果から、自閉症の療育活動の一環として、また里山の有効な福祉利用の一環として、森林作業・活動に可能性があることを報告した．
Uehara.I, Sasaki.K
本人が主たる研究・執筆者
pp.59-67. -
Forest recreation in Bad Woerishofen, Germany Reviewed
Iwao UEHARA
Transaction of the Japanese Forestry Society ( 109 ) 223 - 226 1998.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Attempt of forest activities as treatment for disabilities Reviewed
Journal of Leisure and Recreation ( 38 ) 47 - 54 1998.05
Language：Japanese Publishing type：Research paper (scientific journal)
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A comparison of the forest images between teenagers in Nagano Prefecture, Japan and in Michigan State, USA Reviewed
Iwao UEHARA
Journal of Environmental Education 7 ( 2 ) 37 - 43 1998.02
Language：Japanese Publishing type：Research paper (scientific journal)
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Possibility of forest activities on developmental disorders treatment - A case study of an autism institution's treatment Reviewed
Chubu Forest Research ( 46 ) 9 - 12 1998.02
Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of forest activities on mental developmental disorders treatment Reviewed
Transaction of the Japanese Forestry Society ( 108 ) 181 - 184 1997.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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German Kneipp Therapy utilizing forest walking as recuperation Reviewed
Iwao UEHARA
Forest Science ( 19 ) 84 - 87 1997.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of working in the woodland on autism treatment : An example of treatment activity of autism institution Reviewed
Transaction of the Japanese Forestry Society ( 107 ) 119 - 121 1997.02
Language：Japanese Publishing type：Research paper (scientific journal)