Experimental study on the mechanism of canopy interception using artificial Christmas trees

人造圣诞树冠层拦截机理实验研究

• 批准号: 23580216
• 负责人: MURAKAMI Shigeki
• 金额: $ 3.58万
• 依托单位: Forestry and Forest Products Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580216/
• 关键词: 樹冠遮断; 林分構造; 飛沫蒸発; 降雨中蒸発; 間伐; 模擬木; クリスマスツリー; 蒸発; 林内雨; 飛沫

Canopy interception (evaporation at the time of rainfall) was measured at an outdoor site using artificial Christmas trees (65 cm to 240 cm in heights) placed on trays. The ratio of canopy interception to rainfall was within the range of a little more than 10% to some 20% that was comparable to that in actual forest stands. Thinning reduces canopy interception; however, we found a case that thinning increases canopy interception. Three canopy interception elements, evaporation during rainfall, evaporation during storm break time, and evaporation after the cessation of rainfall, were measured, and it turned out that evaporation during rainfall accounted for most part of canopy interception. The results support a hypothesis that splash droplets produced by raindrops hitting canopy evaporate.

树冠截留量（降雨时的蒸发量）在室外场地使用放置在托盘上的人造圣诞树（高度为65厘米至240厘米）进行测量。林冠截留与降雨的比值在10%多一点到20%左右，与实际林分相当。间伐减少树冠截留；然而，我们发现了一种情况，即疏林增加了树冠截留。测量了雨中蒸发量、雨停时蒸发量和雨停后蒸发量三个冠层拦截要素，结果表明，雨中蒸发量占冠层拦截量的大部分。研究结果支持了一个假设，即雨滴撞击树冠产生的飞溅液滴会蒸发。

项目成果

飛沫蒸発説検証に向けた模擬木による樹冠遮断実験

使用模拟树的树冠拦截实验来测试液滴蒸发理论

• 发表时间: 2014
• 作者: Ikeda,T.;他4名;村上茂樹・鳥羽妙
• 通讯作者: 村上茂樹・鳥羽妙

模擬木を用いた樹冠遮断実験－序報－

使用模拟树木进行树冠拦截实验 - 初步报告 -

• 作者: 村上茂樹;鳥羽妙
• 通讯作者: 鳥羽妙

Experimental study on determining factors of canopy interception using artificial Christmas trees

人造圣诞树冠层拦截影响因素确定的试验研究

• 作者: Murakami;S.;Toba;T.
• 通讯作者: T.