阔叶树截留降雨试验与模型——以色木槭为例  

An Experiment and Model of Interception by Broad_Leaved Tree: a Case Study of Acer mono

作　　者：王安志[1] 刁一伟[1] 裴铁璠[1] 金昌杰[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016

出　　处：《林业科学》2007年第1期15-20,共6页Scientia Silvae Sinicae

基　　金：国家重点基础发展计划研究项目(2002CB111503);中国科学院知识创新工程项目(KZCX3-SW-425);辽宁省博士启动基金项目(20041005)共同资助

摘　　要：通过实验室模拟试验,得到不同雨强和叶面积指数组合下的色木槭截留降雨过程,并考虑树冠湿润度的影响。结果表明:单位叶面积次降雨最大截留量随雨强增大而减小,枝叶截留速率随树冠湿润度变化而变化。构建色木槭截留降雨随雨强和叶面积指数变化的模型,对模型模拟验证,模拟精度为92·7%。The interception process of forest canopy is very important to water cycle of forest. Most studies have considered the relationship between the interception in one or several rainfall events and precipitation without thinking of the rainfall density and the characters of vegetation, and therefore few study results can be used in distributed rainstorm-runoff model. By taking some simulation experiments in the lab, data of interception process in unattached events with different rainfall density and leaf area index were got. Based on the data, the relationship between rainfall density and maximum interception per unit leaf area index is quantified. The changing of interception ratio with wetness degree of canopy is also identified . An interception model using rainfall density and leaf area index as parameters is constructed with the consideration of canopy wetness degree. With the validation experiment, the precision of the model is 92.7 %.

关 键 词：截留 分配降雨 模型 雨强 叶面积指数 

分 类 号：S791.18[农业科学—林木遗传育种]