元谋干热河谷银合欢人工林水土保持功能研究  

Study on Water and Soil Conservation Function of Manmade Leucaena leucocephala Forest in Yuanmou Dry-hot Valley

作　　者：方海东[1] 潘志贤[1] 岳学文[1] 彭辉[1] 奎建蕊[1] 刘刚才[2] 纪中华[3] 

机构地区：[1]云南省农业科学院热区生态农业研究所,云南元谋651300 [2]中国科学院成都山地灾害与环境研究所,四川成都610041 [3]云南省农业科学院农业环境资源研究所,云南昆明650205

出　　处：《西南农业学报》2014年第1期387-390,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家"十二五"科技支撑计划(2006BAC01A11);云南省自然科学基金(2007C235M)

摘　　要：对干热河谷银合欢人工林的水土保持功能进行了研究,结果表明,银合欢林全年地表径流模数总量为1.58万m3/km2,较CK的径流量明显减少,CK的径流量为银合欢林的6.84倍,消减率为85.38%。银合欢林和CK的径流量和降雨量之间呈线性正相关,银合欢林全年土壤侵蚀模数总量为462 t/km2,较CK的土壤侵蚀模数明显减少,CK的径流量为银合欢林的18.99倍,消减率为94.73%。The soil and water conservation function of manmade Leucaena leucocephala forest was studied on the Yuanmou dry-hot valley.The results showed that forest land had evident effect of soil and water conservation.The annual surface runoff modulus of Leumena leucocephala forest was 15 800 m3/km2,but the CK was 6.84 times more than Leucaena leucocephala forest,so the reduction rate was 85.38 ％ for Leucaena leucocephala forest.It showed the linear positive correlation between runoff and Leuce phalaof leucocephala forest and CK.The soil erosion modulus of Leucocephala forest was 462 t/km2,and it significantly reduced companed with CK,and the soil erosion modulus of CK was 18.99 times more than Leucaena leucocephala forest,and the reduction rate was 94.73 ％.

关 键 词：干热河谷 银合欢 土壤养分 人工林 

分 类 号：S157[农业科学—土壤学]