|
Title |
Associate Professor |
|
External Link |
|
|
|
ASAI Toshimitsu Associate Professor |
From Graduate School 【 display / non-display 】
-
Tokyo University of Agriculture Graduate School, Division of Agriculture Doctoral program (second term) Completed
2004.04 - 2007.03
Country：Japan
-
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 】
-
Tokyo University of Agriculture Faculty of Regional Environment Science Department of Landscape Architecture Science
2007.04 - 2008.03
-
Tokyo University of Agriculture Faculty of Regional Environment Science Assistant Professor
2008.04 - 2016.03
-
Tokyo University of Agriculture Faculty of Regional Environment Science Associate Professor
2016.04 - 2017.03
-
Tokyo University of Agriculture Faculty of Regional Environment Science Department of Regional Regeneration Science Associate Professor
2017.04
Professional Memberships 【 display / non-display 】
-
Japan Society of Civil Engineers
2024.06
-
The Jpanese Society of Irrigation, Drainage and Rural Engineering
2020.05
-
The Japanese Society of Revegetation Technology
2006.02
-
Japanese Institute of Landscape Architecture
2005.04
-
日本芝草学会
2005.02 - 2024.05
Research Areas 【 display / non-display 】
-
Environmental Science/Agriculture Science / Landscape science / 環境緑化
-
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Civil engineering (environmental systems) / ファイトレメディエーション
-
Environmental Science/Agriculture Science / Environmental agriculture / 外来種駆除
Papers 【 display / non-display 】
-
Technology for Egeria Densa Extermination Using a Geogrid and an Agricultural Shade Net in an Irrigation Canal Reviewed
Toshimitsu ASAI, Hisashi YOSHIDA, Yasushi TAKEUCHI, and Yoshio NAKAMURA
土木学会論文集（論文） 2026
Authorship：Lead author, Corresponding author Language：Japanese Publisher：Japan Society of Civil Engineers
Large-flowered waterweed (Egeria densa Planch.) is an invasive species that has proliferated extensively in the irrigation canals of Odawara City, Kanagawa Prefecture, Japan. Egeria densa has been identified as a cause of localized flooding and a potential disaster risk. Agricultural shade nets have been installed within the invaded irrigation canals as a possible eradication measure. However, the nets have been damaged by wind and rain in some areas, allowing sunlight into the irrigation canals and confirming the necessity of improving weather resistance. This study experimentally investigates the use of geogrids (high-strength polyolefin mesh fabrics), initially designed for ground reinforcement, as reinforcement materials for agricultural shade nets with improved constructability and weather resistance (Odawara method). The shade plots fabricated via the Odawara method exhibited high weed control efficacy and superior constructability, with an average setting and removal work time of 7.5 minutes per sheet (12 m²) by four workers. In addition, the Odawara method remained undamaged throughout the experimental period, confirming a notable improvement in weather resistance.
-
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.
-
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>
-
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)
-
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
Books and Other Publications 【 display / non-display 】
-
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。
-
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。
-
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
-
「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 】
-
Expansion and Diversification of Green Space Services under New Policy
Harada Nanaho, Asai Toshimitsu
Journal of Japanese Society of Turfgrass Science 52 ( 1 ) 34 - 37 2023.10
Authorship：Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
-
Report of the Annual Spring Meeting 2023 of Japanese Society of Turfgrass Science in Yokohama
Iijima Kentaro, Ishikawa Tomohiro, Goda Masahiro, Kimura Shoichi, Asai Toshimitsu, Harada Nanaho
Journal of Japanese Society of Turfgrass Science 52 ( 1 ) 9 - 11 2023.10
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
-
Use of Provisional Open Space and Grassland Management / Possibility of Phytoremediation
Katohno Atsushi, Asai Toshimitsu
Journal of Japanese Society of Turfgrass Science 51 ( 2 ) 181 - 190 2023.03
Authorship：Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
-
Green Space as a Green Infrastructure / From the Discussion of Stormwater Management
Asai Toshimitsu
Journal of Japanese Society of Turfgrass Science 51 ( 1 ) 97 - 101 2022.10
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
-
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：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japanese Society of Turfgrass Science
Scientific Research Funds Acquisition Results 【 display / non-display 】
-
都市域に生育するコケ植物の重金属集積能力
Grant number：24K07735 2024
独立行政法人日本学術振興会 科学研究費補助金 基盤研究（C）
武生雅明
Authorship：Principal investigator
Past of Cooperative Research 【 display / non-display 】
-
国産ワインのテロワール確立向けたブドウ畑の土壌・気象環境の評価
2023.04 - 2024.03
白百合醸造株式会社 国内共同研究 Cooperative Research within Japan
Authorship：Coinvestigator(s)
-
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
-
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
-
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
-
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
Presentations 【 display / non-display 】
-
在来コケ植物によるPhytoremediationの可能性
浅井俊光，水野百音
第56回日本緑化工学会大会ポスター発表（研究交流発表） 2025.09 日本緑化工学会大会
Event date： 2025.09
Language：Japanese
Venue：京都大学芝蘭会館・別館（京都市左京区吉田近衛町・吉田牛ノ宮町） Country：Japan
-
酒匂川左岸農業用水路（鬼柳堰）におけるオオカナダモ駆除実験
浅井俊光
特殊緑化技術に関する研究発表会 公益財団法人 都市緑化機構 特殊緑化共同研究会
Event date： 2021.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：Web（Zoom）開催 Country：Japan
酒匂川左岸農業用水路（鬼柳堰）におけるオオカナダモ駆除実験結果について口頭発表を行った。
-
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NO3-・SO42-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NO3-・SO42-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。
-
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。
-
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。
Committee Memberships 【 display / non-display 】
-
日本芝草学会 評議員
2008.07 - 2024.05
Committee type：Academic society
-
日本芝草学会 総務担当 筆頭理事
2008.07 - 2024.05
Committee type：Academic society
-
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 - 2024.05
Committee type：Academic society
-
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
-
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 】
-
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