山地斜面の樹木・林冠による降雨再分配プロセスの評価

山坡树木和冠层降雨再分配过程评价

• 批准号: 11J07538
• 负责人: 南光 一樹
• 金额: $ 0.51万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11J07538/
• 关键词: 樹幹通過雨; レーザー雨滴計; 樹幹遮断; TOPOTUBE; 雨滴粒径分布; 雨滴衝撃エネルギー; 間伐; 水の安定同位体

EME Systems(サンフランシスコ・米国)との共同で,現有しているレーザー雨滴計をバッテリー駆動できるようにするためにロガーの開発を進めた.またマイコンでの管理ができるように自らも開発を進めた.東京農工大唐沢山FM(栃木県佐野市)で林外雨・林内雨・樹幹流・流量の定期観測を継続的に行った.また,FM内の一部流域(7ha)で7月末から10月にかけて行われた強度間伐に向けて,毎木調査により伐採木の材積を調べた.間伐による樹冠構造変化に伴い,降雨再分配プロセスが大きく変化する.それにより樹冠通過雨量だけでなく流域からの水流出も変化することが予想される.今後の空間的な降雨インプットを含めた流出の解析を見据えて,唐沢山FMのArcGISによる地図情報の解析を行うとともに、C++プログラムによるTOPOTUBE(等高線をベースにした地形分割)を作成した.また、等高線間隔が異なる地形情報について、TOPOTUBE作成精度などを検討した。これらの情報は、分布型水流出モデルに発展的に適応できる。また昨年度の降雨観測結果を用いて,安定同位体比を指標にして樹冠通過雨の樹冠通過過程を評価できることを示した.特別研究員就任前に投稿していた論文の査読結果を受けて改稿し,受理に至った.この論文で,単木樹冠の下においても,樹冠通過雨量と同様に雨滴粒径分布や雨滴衝撃エネルギーも空間的にばらつくことを評価した.樹冠通過時の雨水分配プロセスを雨滴観測から推定できる可能性を示唆し,本研究課題を進めていく上で重要な前提を示した.またハワイ島での,Miconiaという侵入樹種によって引き起こされる森林荒廃問題を提起すべく,Miconia種での侵食危険性が高いことを定量的に示す論文を投稿した.異なる樹種における降雨再分配プロセスを評価する上で重要な知見となる.

EME Systems (the United States of America) is a member of the United States of America, and now there is an increase in the amount of rain and rain. We need to pay attention to the management and management. We are in the process of starting a business. Beijing Agricultural Industry Datang Mountain FM (Sano City) outside the forest the flow of rain in the rain forest is regularly affected by the flow of rain. In the first watershed (7ha) of the FM, at the end of July and October, the intensity of the cutting is very strong, and the wood is cut down in the same direction. The canopy was cut down, the canopy was made, and the rainfall was redistributed. Through the rainfall data, the water flow out of the river basin is affected by the rainfall. In the future, there will be a lot of rain in the space, including an outflow analysis. In Tangshan, FM, ArcGIS, ArcGIS, the earth will be analyzed, and C++ will be divided into two parts, namely, TOPOTUBE (contours of contours and contours). Contour lines, contours and contours are separated from each other, and TOPOTUBE is used to make precision measurement. There is a lot of love in the exhibition, and the distribution pattern flows out of the exhibition. The results of last year's heavy rain weather show that the diazepam isotope ratio indicates that the weather crown passes through the rain crown and is shown through the process through the rain crown. The results of the papers submitted by the special researcher before taking office are subject to revision and will be accepted and reviewed. In this paper, the raindrop size distribution is the same as the raindrop size distribution, and the raindrop size distribution is the same as the raindrop size distribution. The possibility of the instigation of Rain Water's distribution of raindrop temperature is indicated, and the important prerequisites in the progress of this study are shown. During the war, Miconia invaded all kinds of food, introduced the problem of forest desolation, raised the problem of forest desolation, and Miconia reported that it was dangerous to eat dangerous food, and that it was a quantitative statement of contribution. There are many important information on the redistribution of rainfall in several kinds of weather.