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ASAI Toshimitsu Associate Professor |
From Graduate School 【 display / non-display 】
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Tokyo University of Agriculture Graduate School, Division of Agriculture Doctoral program (second term) Completed
2004.04 - 2007.03
Country：Japan
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Tokyo University of Agriculture Graduate School, Division of Agriculture Doctoral program (first term) Completed
2002.04 - 2004.03
Country：Japan
Employment Record in Research 【 display / non-display 】
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Landscape Architecture Science
2007.04 - 2008.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Assistant Professor
2008.04 - 2016.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Associate Professor
2016.04 - 2017.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Regional Regeneration Science Associate Professor
2017.04
Professional Memberships 【 display / non-display 】
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The Jpanese Society of Irrigation, Drainage and Rural Engineering
2020.05
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日本緑化工学会
2006.02
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日本造園学会
2005.04
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日本芝草学会
2005.02
Papers 【 display / non-display 】
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Assessing the pore size distribution of architectural greening soils and materials for wall greening based on their physical properties Reviewed
ASAI Toshimitsu, FUJIKAWA Tomonori, FUJITA Shigeru, MAKI Takashi, MORII Hiroyuki, SHIRAI Hiroyuki, KANEKO Takanori
Journal of the Japanese Society of Soil Physics 154 ( 0 ) 11 - 18 2023.07
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Soil Physics
Artificial lightweight and porous materials (i.e., architectural greening soils and materials) are often used in the rooftops and wall greening of buildings. It is important for the designers of the system to understand the physical properties of architectural greening soils and materials to save the amount of water and fertilizer used, which directly affects maintenance costs. The aims of this study were to assess the pore size distribution of architectural greening soils and materials for wall greening based on their physical properties. According to water retention measurements, rapid drainage will occur at particular matric potentials for certain architectural greening soils and materials. The pore size distributions of architectural greening soils and materials estimated from water retention curves suggested that the architectural greening soils and materials used in this study can be classified into two groups: (i) materials that include only relatively large pores with diameters from 0.001 to 0.01 cm, (ii) materials also include relatively small pores with diameters from 0.0002 to 0.001 cm. The classification of architectural greening soils and materials by pore size distribution could be affected by their manufacturing processes. The values of saturated hydraulic conductivity of the materials ranged from 10^0 to 10^{-2} cm s^{-1}. Furthermore, hydraulic conductivity tended to increase with total porosity of the architectural greening soils and materials except that whose pores were made by forming.
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Changes in Growth of <i>Egeria densa</i> in Shading Conditions Reviewed
ASAI Toshimitsu, FUJIKAWA Tomonori, TAKEUCHI Yasushi, SUZUKI Shinichi, NAKAMURA Yoshio
Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 90 ( 1 ) I_209 - I_216 2022.06
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Irrigation, Drainage and Rural Engineering
<p>This study aimed to develop a new method to control <i>Egeria densa</i>, which overgrows in agricultural irrigation canals. We conducted two experiments (one in the laboratory and one in the field), focused on changes in light conditions and the growth of <i>E. densa</i>. In the laboratory experiment, the maximum tensile load of the stems was significantly reduced when the light was shaded to about 20 μmol·m<sup>-2</sup>·s<sup>-1 </sup>(1,400 lx). We discovered that shading exerted a significant negative effect on the number of roots. Furthermore, in the field experiment, which was conducted in an actual agricultural canal, the maximum tensile load on stems was reduced in both the 85-90% and 95-98% shade plots. In particular, in the 95-98% shade plot, the tensile load was reduced to about half of that in the control plot (non-shade) during the high grow season from August to October.</p>
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Evaluating Ion Exchange Capacity of Molten Slag for Hydroponic System "jointly worked" Reviewed International coauthorship International journal
Antonio Perez Fuentes, Sarvesh Maskey, Hiromu Okazawa, Yuri Yamazaki, Tmonori Fujikawa, Toshimitsu Asai
International Journal of Environmental and Rural Development 13 ( 1 ) 143 - 146 2022.06
Language：English Publishing type：Research paper (scientific journal)
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Study on Extermination of <i>Egeria densa</i> by Shading Nets in Agricultural Irrigation Canal Invited Reviewed
ASAI Toshimitsu, FUJIKAWA Tomonori, TAKEUCHI Yasushi, NAKAMURA Yoshio, SUZUKI Shinichi*
Water,Land and Environmental Engineering 88 ( 11 ) 893 - 897,a1 2020.11
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Irrigation Drainage and Rural Engineering
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Study on applicability of Phytoremediation techniques for Pb contaminated soil Reviewed
Shiro WAKUI,Toshimitsu ASAI*,Yousuke WATANABE,Akihiko HORIKAWA,Masayo YAMASAKI,Kentaro IIJIMA
Journal of Japanese Society of Turfgrass Science 48 ( 1 ) 17 - 24 2019.10
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)
We used Chenopodium album var. centrorubrum, Gossypium arboretum, Festuca araundinacea, Festuca rubra var. genuina. Hack. Poa pratensis and Cynodon dactylon (L.)Pers. cv. `Riviera', which planting and cultivation techniques have been already established, to try phytoremediation of lead in the simulated contaminated soil. Our results found that C. album and G. arboretum increased Pb concentration levels in the plant body over long-term cultivation (115 days and 96 days) rather than short-term cultivation (63 days and 22 days). Furthermore, these tendency was remarkable in G. arboretum. On the other hand, C. album recorded the highest reading for Pb resistance. Additionally, that dry weight was large. We considered the amount-per-pot Pb removed to be the largest in this study. Cool-season turf grasses (F. araundinacea, F. rubra, P. pratensi) had higher leaf Pb concentrations than warm-season grasses (C. dactylon). While those grasses had a plant body smaller than other test plants, their root Pb concentration was very high. Thus, it was revealed that a turf grass Pb removal amount-per-pot can be obtained equivalent to C. album.
*Corresponding author
Books and Other Publications 【 display / non-display 】
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はかるつくるえがく・そだてる みどりの地域を育む～地域環境科学がわかる本
東京農業大学地域環境科学部教員一同（ Role： Joint author , 85，「地域の環境保全のために‐植物で環境浄化！‐」）
東京農業大学出版会 2015.07 （ ISBN:978-4-88694-450-4 ）
Language：Japanese Book type：Scholarly book
地域環境科学部の学部紹介本『はかるつくるえがく・そだてる みどりの地域を育む～地域環境科学がわかる本』の「えがく・そだてる」の項目に、現在の主な研究テーマであるファイトレメディエーションについて解説・執筆した。
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1級造園施工管理技士試験 短期総仕上げと演習問題 第四版
山崎元也，浅井俊光，阿部伸太，粟野 隆，入江彰昭，國井洋一，栗田和弥，服部 勉（ Role： Joint author , 1-2草花（p15）、1-3地被植物（p16-17）、3植栽（p45-60）の項目の執筆および対応演習問題（p23-26，p61-64）の作成）
彰国社 2014.03 （ ISBN:978-4-395-35004-9 ）
Language：Japanese Book type：General book, introductory book for general audience
1級造園施工管理技士試験 短期総仕上げと演習問題の第四版への改訂作業を行い、1-2草花、1-3地被植物、3植栽の項目の執筆および対応演習問題の作成を担当した。
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造園用語辞典（第三版）
「浅井俊光」「青木司光」「麻生恵」「阿部伸太」「荒井歩」「粟野隆」他（ Role： Joint author）
東京農業大学造園科学科 2011.04 （ ISBN:9784395100477C3552 ）
Language：Japanese Book type：Scholarly book
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「造園力」で地球を庭に
東京農業大学造園科学科編（ Role： Joint author , 161-162）
東京農業大学出版会 2009.04 （ ISBN:978-4886942098 ）
Language：Japanese
植物の力を生かし、環境を浄化する「ファイトレメディエーション」について解説
Misc 【 display / non-display 】
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The Effect and Technology of Rail Track Greening as a Green Infrastructure
Katohno Atsushi, Asai Toshimitsu
Journal of Japanese Society of Turfgrass Science 49 ( 2 ) 93 - 100 2021.03
Authorship：Corresponding author Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
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The Discussion on Intellectual Property Rights of Greening Plants
Toshimitsu Asai
Journal of Japanese Society of Turfgrass Science 48 ( 2 ) 195 - 198 2020.03
Authorship：Lead author, Last author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
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Scheme and Problem of Related to Park Management for Public-Private Partnership
Toshimitsu Asai
Journal of Japanese Society of Turfgrass Science 48 ( 1 ) 75 - 76 2019.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
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For Environment Welfare from Financial Welfare
Toshimitsu Asai
Journal of Japanese Society of Turfgrass Science 47 ( 2 ) 131 - 133 2019.03
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
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Development of Urban Greenery for 2020-2030
Toshimitsu Asai, Kentaro Iijima
Journal of Japanese Society of Turfgrass Science 47 ( 1 ) 44 - 47 2018.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
Past of Cooperative Research 【 display / non-display 】
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令和2年度オオカナダモ発生抑制対策検証事業業務委託
2020.06 - 2021.03
神奈川県県西地域県政総合センター 国内共同研究 Cooperative Research within Japan
Authorship：Principal investigator
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各種壁面緑化用資材の保水・透水性評価試験
2019.07 - 2020.04
有限会社緑花技研，サントリーホールディングス株式会社，ダイトウテクノグリーン株式会社 国内共同研究 Cooperative Research within Japan
浅井俊光、藤田 茂
Authorship：Principal investigator
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令和元年度オオカナダモ発生抑制対策検証事業業務委託
2019.05 - 2020.03
神奈川県県西地域県政総合センター 国内共同研究 Cooperative Research within Japan
Authorship：Principal investigator
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平成30年度オオカナダモ発生抑制対策検証事業業務委託
2018.07 - 2019.03
神奈川県県西地域県政総合センター 国内共同研究 Cooperative Research within Japan
Authorship：Principal investigator
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IT・センシング技術を活用した営農管理、農地・緑地管理の最適化
2017.08 - 2018.03
株式会社WIT 国内共同研究 Cooperative Research within Japan
Authorship：Principal investigator
Presentations 【 display / non-display 】
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ヘデラ・ヘリックスとヘデラ型イミテーショングリーンのNO<sub>3</sub><sup>-</sup>・SO<sub>4</sub><sup>2-</sup>吸着能の比較
浅井俊光
特殊緑化技術に関する研究発表会 2019.11 公益財団法人 都市緑化機構 特殊緑化共同研究会
Event date： 2019.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：田島ルーフィング8F会議室（東京都千代田区岩本町3-11-13）
ヘデラ・ヘリックスと3種類のヘデラ型のイミテーショングリーンを一定期間屋外に設置し、表面に吸着したNO<sub>2</sub><sup>-</sup>・SO<sub>4</sub><sup>3-</sup>量の定量を行い、種類の違いや季節による吸着量の変化を明らかにした。
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異なる高光束密型LED光源下におけるTifwayの生育の変化
浅井俊光
特殊緑化技術に関する研究発表会 2018.11 公益財団法人 都市緑化機構 特殊緑化共同研究会
Event date： 2018.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：田島ルーフィング8F会議室（東京都千代田区岩本町3-11-13）
代表的な斑入りマサキ品種である黄金マサキ、金マサキ、銀マサキの3品種を供試植物として、様々な遮光条件下における生育試験を行い、その樹高・根本直径、茎葉部の形態的変化や葉色の経時的変化を究明し、斑入り植物としての機能・美観の維持が可能な臨界点を明らかにした。
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遮光条件下における斑入りマサキの生育特性および葉色の変化について
浅井俊光
特殊緑化技術に関する研究発表会 2017.11 公益財団法人 都市緑化機構 特殊緑化共同研究会
Event date： 2017.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：田島ルーフィング8F会議室（東京都千代田区岩本町3-11-13）
代表的な斑入りマサキ品種である黄金マサキ、金マサキ、銀マサキの3品種を供試植物として、様々な遮光条件下における生育試験を行い、その樹高・根本直径、茎葉部の形態的変化や葉色の経時的変化を究明し、斑入り植物としての機能・美観の維持が可能な臨界点を明らかにした。
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Early Growth Response of Lolium perenne L. Under Different Wavelengths of Light Environments
Marina WATANABE,Toshimitsu ASAI, Shinpei TAKAHASHI
2016.05
Event date： 2016.05
Language：Japanese Presentation type：Oral presentation (general)
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厚層基材吹付工による安全・安心な牧草地として再生するための除染手法の開発に関する実証実験（中間報告）
近藤三雄，水庭千鶴子，浅井俊光，茂木道教，本多竹三郎，雨貝 洋，片平芳夫
(社)日本造園学会 平成26年度 関東支部大会 2014.11 公益社団法人日本造園学会関東支部
Event date： 2014.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：山梨大学甲府東キャンパス
Committee Memberships 【 display / non-display 】
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日本芝草学会 評議員
2008.07
Committee type：Academic society
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日本芝草学会 総務担当 筆頭理事
2008.07
Committee type：Academic society
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日本芝草学会 グランドカバープランツ緑化部会 幹事
2008.07
Committee type：Academic society
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日本造園学会 造園CPD推進委員会 総括幹事
2013.04 - 2015.05
Committee type：Academic society
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日本造園学会 造園CPD推進協議会 幹事
2013.04 - 2015.05
Committee type：Academic society
Academic Activities 【 display / non-display 】
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県西地域未利用農業資源活用検討協議会
Role(s)： Supervision (editorial), Planning/Implementing academic research
神奈川県県西地域県政総合センター 2017.08
Type：academic_research