长江三峡库区不同森林类型涵养水源能力比较研究  

A Comparative Study on Water Conservation Capacity of Five Main Forest Types in Three Gorges Reservoir Area in China

作　　者：成晨[1] 王玉杰[1] 潘玉娟[1] 吴云 陈林 

机构地区：[1]水土保持与荒漠化防治教育部重点实验室北京林业大学水土保持学院,北京100083 [2]重庆缙云山国家级自然保护区管理局,重庆400700

出　　处：《水土保持研究》2007年第2期215-217,共3页Research of Soil and Water Conservation

基　　金：国家"十五"科技攻关课题"退耕还林工程区水源涵养型植被建设技术研究与示范"(2001BA510B02-01);国家林业局长江三峡库区(重庆)森林生态站(98J-01-11)

摘　　要：从林冠层、枯落物层及土壤层3个生态作用层次对缙云山自然保护区4种主要森林类型的涵养水源功能进行了定量研究。结果表明：林内透雨量、树干径流量与降雨量、降雨强度呈二元线性关系。林冠截留率为16．91％～67．84％，平均为38．19％，依次为针阔混交林〉阔叶林〉楠竹林；枯落物储量为16．21-32．42t／hm^2，平均为20．69t／hm^2，依次为灌木林〉阔叶林〉针阔混交林〉楠竹林；各种森林生态系统能够截留的降雨量总量为450．3-686．3t／hm^2，针阔混交林的涵养水源功能最好，阔叶林、楠竹林次之，灌木林最小。Based on the data from fixed sample plots of main forest types in Jinyun Mountain in Chongqing City, water conservation capacity were studied. The results showed that there is a binary linear regression for both through fall and stem flow to precipitation quantity and precipitation intensity. The relative interception ranges from 16.91% to 67.84% on an average of 38. 19%. Under the same rainfall the decrease order of canopy interception in the different forest types is coniferous and broadleaved mixed forest, broadleaf forest, bamboo forest. The biomass of litter layer in different forest ecosystems varies from 16.21 to 32.42 t/hm^2,on an average of 20. 69 t/hm^2 and the decrease order of the biomass is shrubbery, broadleaf forest, coniferous and broad-leaved mixed forest, bamboo forest. The total interception of rainfall in different forest ecosystems varies from 450.3 to 686.3 t/hm^2 the decrease order is coniferous and broad-leaved mixed forest, broadleaf forest, bamboo forest , shrubbery.

关 键 词：缙云山 林冠截留 枯落物持水 土壤蓄水 

分 类 号：S715[农业科学—林学]