文献类型：期刊文献

中文题名：六盘山华山松(Pinus armandii)林降雨再分配及其空间变异特征

英文题名：Rainfall redistribution and its spatial variation in the stand of Pinus armandii in the Liupan Mountains,China

作者：时忠杰[1,2] 王彦辉[1] 徐丽宏[1] 熊伟[1] 于澎涛[1] 郭浩[1]

第一作者：时忠杰

机构：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091;[2]中国环境科学研究院生态研究所,北京100012

年份：2009

卷号：29

期号：1

起止页码：76-85

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究资助项目(2002CB111501);国家自然科学基金重点资助项目(40730631);国家科技部“十一五”科技支撑计划资助项目(2006BAD03A1803);国家科技部社会公益研究专项资助项目(2004DIB3J102);国家林业局引进国际先进技术资助项目(2003-4-43);国家林业局森林生态环境重点试验室联合资助项目

语种：中文

中文关键词：华山松;林冠截留;树干径流;穿透降雨;空间变异;六盘山

外文关键词：Pinus armandii;canopy interception;stemflow;throughfall;spatial variability;liupan Mountains

分类号：Q142;Q149

摘要：利用2004和2005年生长季（6-9月份）六盘山自然保护区的香水河小流域内华山松天然林的穿透降雨、树干径流和冠层截留量观测资料,通过对华山松林降雨再分配特征和穿透降雨空间变异及其影响因素的综合分析,所得结果表明华山松天然林的穿透降雨量、树干径流量和冠层截留量,分别占大气降雨量的84.34%、0.72%和14.94%。穿透降雨在林内具有较大的空间变异,其变异程度随降雨量的增加而减小,冠层对穿透降雨具有一定的聚集效应,降雨量越高时效应越明显;华山松冠层结构特征是影响穿透降雨的重要因素,叶面积指数、冠层覆盖度、冠层厚度及距树干的距离等都会影响穿透降雨的空间分布,其中以叶面积指数的影响最大。由分析结果可知,冠层结构特征是决定大气降雨再分配和空间变异的重要生态因素之一。
During the growing-season（Jun.Sep.） of 2004 and 2005,the throughfall,stemflow and canopy interception of a natural forest stand of Pinus armandii in Liupan Mountains Nature Reserve of northwestern China were observed.The rainfall distribution,the spatial variability of throughfall and their influencing factors were systematically analyzed.The result indicated that the throughfall,stemflow and canopy interception accounts for 84.34%,0.72% and 14.94% of the rainfall in open field,respectively.The spatial variability of throughfall within this stand was estimated for different rainfall events.The coefficient of variance of throughfall decreases with increasing rainfall depth.It was found that the canopy has a congregation effect on the throughfall in a certain extend,and this effect increases evidently with increasing rainfall depth.The canopy structure characteristics,such as leaf area index（LAI）,canopy density,canopy thickness,and the distance of sampling sites to the stem of sample tree,are very important factors influencing the spatial distribution of throughfall.Of these factors,the influence of LAI is the highest one.It was concluded that the canopy structure is one of the most important ecological factors that affect the rainfall redistribution and spatial variability within forest stand.