Movement and collision of tree crowns by wind and their ecological consequences

2016 Fiscal Year Final Research Report

• Project/Area Number: 26660126
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Forest science
• Research Institution: Kyoto University
• Principal Investigator: Onoda Yusuke 京都大学, 農学研究科, 助教 (70578864)
• Research Collaborator: NAKASHIMA Kiyonori 京都大学, 大学院農学研究科 ; BANDO Reo 京都大学, 大学院農学研究科, 学士 ; KOMINAMI Yuji 森林総合研究所, 関西支所, グループ長 (70353688)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 樹冠の譲り合い / 風 / UAV / 競争 / 力学

Outline of Final Research Achievements

Crown shyness (CS) is a clearance between crowns of neighboring trees. CS is considered to be formed by movement and collision of crowns, which may depend on the wind speed, tree architecture and wood mechanical property. The variations of CS in natural forests are not well understood, thus we aimed to understand how CS is formed and to what extent CS depend on tree characteristics. In this study, we did the following tasks; (1) determining to what extent tree stems were deformed by wind and topography, (2) building a procedure to measure CS with UAV and (3) clarifying the links between CS and tree characteristics.

Free Research Field

森林生態学