IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Alternative TitleMeasurements and modeling of canopy interception in the Gongga Mountain subalpine succession forest
孙向阳1,2; 王根绪1; 李伟1; 刘光生1,2; 林云1,2
Corresponding Author孙向阳
Source Publication水科学进展

通过对贡嘎山亚高山峨眉冷杉与冬瓜杨演替林连续两年林下降水与树干径流的实验观测, 分析研究了演替林林下降水、树干径流、林冠截留的变化特征, 并验证了Gash(1995)模型模拟该区林冠截留的适用性. 结果显示, 2008年和2009年贡嘎山亚高山演替林林下降水分别占降水量的76.4%和77.0%, 树干径流量较小, 可以忽略不计, 林冠截留量分别为23.6%和23.O%. Gash(1995)模型中蒸散发参数采用Penman-Monteith公式计算, 饱和冠层储水量采用Preira法, 模型对整个湿季的林冠截留模拟效果较好, 2008年模拟值与实测值分别为125.6mm和126.1mm, 2009年均为150.1mm, 说明Gash(1995)模型在该区具有较好的适用性

Other Abstract

Gross rainfall, throughfall and stemflow were measured during the growing seasons of two tree species of Abies afbri and Populus purdomii in 2008 and 2009 in a subalpine succession forest on the Gongga Mountain. Throughfall (the net precipitation under the two tree species), steamflow and canopy interception are analyzed. In addition, the applicability of the Gash model (1995) is examined using the measurement. The model requires only a limited amount input and uses the Penman-Monteith equation for evapotranspiration estimation. The capacity of the canopy storage is calculated using the Preira method in the model. The results show that the throughfall can account for 76.4% and 77.0% of gross rainfall in 2008 and 2009, respectively, while the stemflow is too small to contribute the gross rainfall, and the remaining is intercepted by canopies. The amount of gross rainfall is found to be the main influential factor on the interception process compared to the rainfall duration and intensity. Simulations of canopy interceptions agree well with the observed values for the two growing seasons. For example, the values of simulated and observed interceptions are respectively 125.6 mm and 126. 1 mm for the growing season of 2008, which illustrates that the applicability of the Gash model in this region

Keyword贡嘎山 演替林 林冠截留 Gash模型
Subject AreaS715
Indexed ByEI ; CSCD
Funding Organization国家自然科学基金资助项目(40730634)
Accession numberAccession number:20111713938348
Citation statistics
Cited Times:20[CSCD]   [CSCD Record]
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
孙向阳,王根绪,李伟,等. 贡嘎山亚高山演替林林冠截留特征与模拟[J]. 水科学进展,2011,22(1):23-29.
APA 孙向阳,王根绪,李伟,刘光生,&林云.(2011).贡嘎山亚高山演替林林冠截留特征与模拟.水科学进展,22(1),23-29.
MLA 孙向阳,et al."贡嘎山亚高山演替林林冠截留特征与模拟".水科学进展 22.1(2011):23-29.
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