3D physical simulation on tree wetting and drying processes through multipoint raindrop measurements

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H05626
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Forest science
• Research Institution: Forest Research and Management Organization
• Principal Investigator: Nanko Kazuki 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (40588951)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 樹冠遮断 / 雨滴 / 林内雨 / 樹冠通過雨 / 濡れ / 撥水性 / 樹幹流 / 枝

Outline of Final Research Achievements

Throughfall drop generation process was clarified. A technique was established to divide throughfall into three drop components, which were free throughfall, splash throughfall, and canopy drip. Through the technique, the influence of tree species, presence and absence of leaves, rainfall intensity, and elapsed time from the onset of rainfall was analyzed for throughfall drop generation process. Rainwater physics of adhesion and transfer on the foliage was clarified based on the measurement of hydrophobicity of the foliage surface. Above all, it is elucidated that the occurrence of adhesion, sliding, and detachment of rainwater from the foliage surface was different between leafy and woody surfaces.

Free Research Field

森林水文学