第136回日本森林学会大会 発表検索
講演詳細
防災・水文部門[Forest Disaster Prevention and Hydrology]
| 日付 | 2025年3月21日 |
|---|---|
| 開始時刻 | ポスター発表 |
| 会場名 | 学術交流会館（ロビー） |
| 講演番号 | PJ-2 （学生ポスター賞審査対象） |
| 発表題目 | Forest thinning impacts on streamflow recession characteristics in a Japanese conifer headwater catchment Forest thinning impacts on streamflow recession characteristics in a Japanese conifer headwater catchment |
| 所属 | 東京大学大学院農学生命科学研究科 |
| 要旨本文 | This study investigated the streamflow recession response to forest thinning. Two types of forest thinning were conducted in two paired headwater catchments in central Japan: 40% thinning in which the logs were cut and left parallel to the contour in catchment A-1 and 50% thinning followed by removal of the logs using swing yarder and forwarder in catchment M-2. Recession curve analysis using two-parameter (a and b) power law function revealed that the value of log(a) has decreased for both thinning treatments which leads to more persistent streamflow. In contrast, only M-2 has shown an increase in b value which implies a sharp drop in runoff during the recession phase that may have been attributed to soil disturbance during logging operation. |
| 著者氏名 | ○Ibtisam Mohd Ghaus1 ・ Nobuaki Tanaka2 ・ Moein Farahnak3 ・ Takanori Sato4 ・ Yuya Otani5 ・ Anand Nainar6 ・ Koichiro Kuraji7 ・ Mie Gomyo8 |
| 著者所属 | 1Graduate School of Agricultural and Life Sciences, The University of Tokyo ・ 2The University of Tokyo Hokkaido Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo ・ 3Ecohydrological Research Institute, Graduate School of Agricultural and Life Sciences, The University of Tokyo ・ 4Faculty of Regional Environment Science, Tokyo University of Agriculture ・ 5Faculty of International Studies, Setsunan University ・ 6Fakulti Perhutanan Tropika, Universiti Malaysia Sabah ・ 7Executive Office, Graduate School of Agricultural and Life Sciences, The University of Tokyo ・ 8Forest GX/DX Co-creation Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo |
| キーワード | Forest thinning, Headwater catchment, Streamflow recession |
| Key word | Forest thinning, Headwater catchment, Streamflow recession |