三峡库区莲峡河小流域马尾松林冠降雨截留模拟研究  

Canopy Precipitation Interception of Masson's Pine Stand in Lianxiahe Small Watershed in Three Gorges of Yangtze River

作　　者：张卓文[1] 杨志海[1] 张志永[1] 陈玉生[1] 崔鸿侠[1] 袁玉万 朱传忠 

机构地区：[1]华中农业大学园艺林学学院,武汉430070 [2]湖北省巴东县林业局,巴东444300

出　　处：《华中农业大学学报》2006年第3期318-322,共5页Journal of Huazhong Agricultural University

基　　金：长江水利委员会水土保持局科研项目资助

摘　　要：以莲峡河小流域内马尾松林为研究对象,对林分样地进行降水截留实测与模拟研究,结果表明林内穿透雨量与降雨量呈线性相关;穿透系数与降雨量呈对数相关;林冠截留量与降雨量呈指数相关;截留率与降雨量呈对数相关;而林冠截留量与降雨量、降雨强度呈多元线性相关。在此基础上建立了穿透系数、树干茎流率和降雨强度而预测林冠截留量模拟模型,实测表明该模型能比较准确地估算马尾松林分的林冠截留量。With data from stands of Pinus massoniana Lamb located at Lianxiahe small Watershed, an investigation into rainfall interception within these stands was carried out. The results showed that there is a linear regression between the throughfall and precipitation, a logarithmic regression between the throughfall coefficient and precipitation, a power regression between canopy interception and precipitation, a logarithmic regression between the interception rate and precipitation, a binary linear regression for canopy interception to precipitation quantity and intensity. Based on these results, a simulated model has been set up about canopy interception by making use of throughfall and stemflow rate, and rainfall intensity. The measurements show that the mode can forecast the canopy interception capacity of stands of Pinus massoniana Lamb well.

关 键 词：三峡库区 小流域 马尾松 林冠截留量 模型模拟 

分 类 号：S752.2[农业科学—森林经理学]