樟树人工林冠层对大气降水再分配规律的影响研究  

Contribution of Cinnamomum Camphora(L.) Presl Plantation to Precipitation Redistribution

作　　者：闫文德[1] 陈书军[1] 田大伦[1] 康文星[1] 

机构地区：[1]中南林学院生态研究室,湖南长沙410004

出　　处：《水土保持通报》2005年第6期10-13,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目(30271043);国家科技部平台建设项目(20021220);国家林业局重点科研项目(2001-07);国家重点野外台站项目(2000-076)

摘　　要：对湖南株洲20 a生樟树人工林的降雨分配规律进行了2 a的观测。结果表明,该森林生态系统年降雨输入为1 321.4 mm,其中16.869 mm以树干茎流形式进入林地,占年降雨量的1.28%,林内穿透水为957.4 mm,占72.45%。另外,林冠年截留量为345.749 mm,占年降雨量的26.17%。在次降雨中,降雨量越小,截留率越大,雨强越小,林冠截留作用的效益越明显。The precipitation distribution in 20 year-old artificial forest of Cinnamomum camphora in Zhuzhou City, Hu＇nan Province was studied. Results show that annual average rainfall of the ecosystem is 1 321.4 mm, among them the throughfall, stemflow and canopy interception rate make up 72.5 %, 1.3 % and 26.2 % of the annual precipitation, respectively. In a single rainfall, the less the rain, the higher the interception rate, and the less the rainfall intensity, the more the benefits from the crown - interception.

关 键 词：樟树人工林 林冠 截留 

分 类 号：S715[农业科学—林学]