文献类型：期刊文献

中文题名：六盘山叠叠沟小流域华北落叶松人工林的冠层降水再分配特征

英文题名：Characteristics of Rainfall Redistribution under the Canopy of Larix Principis-rupprechtii Forest in Diediegou watershed of Liupanshan Mountains

作者：刘建立[1,2] 王彦辉[1] 于澎涛[1] 程丽莉[3] 熊伟[1] 徐丽宏[1] 张淑兰[1] 杜阿朋[1]

第一作者：刘建立

机构：[1]中国林业科学研究院森林生态环境与保护研究所;[2]北京林业大学/水土保持与荒漠化防治教育部重点实验室;[3]北京市农林科学院林业果树研究所

年份：2009

期号：4

起止页码：76-81

中文期刊名：水土保持学报

外文期刊名：Journal of Soil and Water Conservation

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

基金：国家自然科学基金项目(40730631;40671038;30671677;40801017);科技部"十一五"科技支撑计划项目课题(2006BAD03A1803);中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2007038;CAFRIF200702);科技部科研院所社会公益研究专项(2004DIB3J102);国家林业局森林生态环境重点实验室项目

语种：中文

中文关键词：六盘山;华北落叶松;穿透雨;树干茎流;林冠截留

外文关键词：Liupan Mountains; Larix principis-rupprechtii; throughfall; stemflow; canopy interception

分类号：S715.2

摘要：于2006-2007年生长季(5-10月)定位监测了六盘山北段叠叠沟小流域华北落叶松人工林的穿透雨、树干茎流和林冠截留特征,并基于同期气象数据初步分析了有关因素的影响。结果表明:林下穿透雨率存在明显的空间异质性,这种差异随着降雨量增大而变小。在整个测定期间,华北落叶松林穿透雨占总降雨量的(74.94±2.4)%,树干茎流占(0.16±0.03)%,而林冠截留占(25.08±2.41)%。穿透雨、树干茎流和林冠截留的数量与降雨量呈正相关(p<0.01),随着雨量或雨强的增加,穿透雨率升高,并且在高的雨量(>20 mm)和雨强(>5 mm/h)下逐渐趋于稳定。当降雨量到达6.44 mm时开始出现树干茎流。林冠截留率与降雨量、降雨历时和空气相对湿度呈显著负相关(p<0.05)。
Though a field investigation during growing season from May to October in 2006 and 2007 the partitioning of gross rainfall into throughfall, stemflow and canopy interception in the Larix principis-rupprechtii forest was studied in the small watershed of Diediegou located at the north part of Liupan Mountains, Ningxia. And the influence of meteorological factors was evaluated based on the simultaneous weather observation. An obviously spatial variation of throughfall ratio was observed, and this spatial variation declined with rising rainfall depth. The results also showed that throughfall, stemflow, and canopy interception accounted for （74.94±2.4）%, （0.16±0.03）%, and （25.08±2.41）% of the total rainfall, respectively. The amount of throughfall, stemflow and canopy interception was significantly （p〈0.01） and positively correlated with rainfall depth. As rainfall depth and intensity increased, the throughfall ratio in gross rainfall increased, but will gradually stabilized when the rainfall depth was higher than 20 mm and the rainfall intensity was higher than 5 mm/h. The stemflow began to appear when the rainfall depth arrived at 6.44 ram. The canopy interception ratio in gross rainfall decreased significantly （p〈0.05） and hyperbolically with increasing rainfall depth, rainfall duration, and air humidity.