摘要
林冠截留是水文循环中的重要成分之一。为探究降雨特征和林分特征对樟树林冠截留效应的影响,针对降雨量、降雨强度、叶面积指数(LAI)和树龄这些相关影响因子,采用室内模拟的方法进行对比截留试验。试验得到4种样树的16组降雨量、降雨强度和截留量,以及其各自的LAI值。分析结果表明:①降雨量、降雨强度和LAI是截留的主要影响因子,树龄对截留的影响效果不明显;②雨强与截留量呈反比关系,截留量与降雨量呈二次函数关系,叶面积指数(LAI)与截留量呈正比关系;③树叶伸展方向对截留产生较大影响,模拟试验方法仍需进一步改进和完善。
Abstract
Canopy interception is an important component in hydrological cycle. In order to study the influence of rainfall and forest stand characteristics on the canopy interception of camphor-tree, an interception experiment was designed to reveal the relations between interception with the impactor factors such as rainfall amount, rainfall intensity, leaf area index(LAI) and tree age. Four tree samples were collected from the camphortree area in Beibei, Chongqing. Sixteen combinations of rainfall amount, rainfall intensity, interception amount, and the respective LAI from these samples were obtained. Simulation test result shows that the rainfall amount, intensity and LAI are the main factors influencing interception, yet the tree age’s effect is not obvious. The interception amount is inversely proportional to rainfall intensity, directly proportional to the LAI, and appears a quadratic function with rainfall amount. Furthermore, it seems that stretch direction of leaves may have a great effect on interception, and the experiment is still needed to improve.
关键词
樟树  /
林冠截留 /
  /
LAI  /
/
模拟
Key words
camphor-tree /
canopy interception  /
LAI /
simulation
杨中文, 唐甜华, 陈 野, 肖 玲, 黄晶晶, 张卫华.
樟树林冠截留模拟试验研究[J]. 长江科学院院报. 2011, 28(3): 5-9
YANG Zhong-wen, TANG Tian-hua, CHEN Ye, XIAO Ling, HUANG Jing-jing, ZHANG Wei-hua.
Simulation of Canopy Interception by Camphor-tree[J]. Journal of Changjiang River Scientific Research Institute. 2011, 28(3): 5-9
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