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 ％.
出处
《西南农业学报》
CSCD
北大核心
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)
关键词
干热河谷
银合欢
土壤养分
人工林
Dry-hot valley
Leucaena leucocephal
Water and soil conservation function
Manmade forest
