祁连山森林水源涵养效益初析  

Evaluation on Water Resource Conservation Effect of Forest in Qilian Mountains

作　　者：常学向[1] 王金叶[1] 张学龙[1] 常宗强[1] 潘爱华[1] 

机构地区：[1]甘肃省张掖祁连山水源林研究所,甘肃张掖734000

出　　处：《西北林学院学报》2001年第z1期51-54,共4页Journal of Northwest Forestry University

基　　金：国家林业局"中国森林生态系统研究网络"项目资助 ( 96 -30 )

摘　　要：通过环刀、烘干法、双环入渗器与 Ag NO3 - Na Cl离子示踪法 ,对祁连山森林水源涵养效益研究表明 ,祁连山森林林地枯落物层最大持水能力为 3 3 87.3万 t ;林地土壤入渗的稳渗能力为 40 0 0 .6万 t,与草地相比林地土壤稳渗效益为 3 992 .4万 t;林地土壤蓄水能力为2 85 5 0 .0万 t,与草地相比林地土壤蓄水效益为 90 2 7.0万 t,土壤水分效益相当可观。Evaluation on water resource conservation effect of forest in Qilian Mountains, was carried out by ring knife ,dry method, and two ring infiltrometer,the maximum capacity of water-holding by litter layer was 3.387 33×10 6t, the capacity of final infiltration by forestland soil was 45.466×10 6t,the benefit of final infiltration by forestland was 34.424×10 6t,soil water storage capacity of forestland was 285.5×10 6t and the benefit of forestland water storage was 90.27×10 6t. The result indicates that the benefit of soil moisture plays a very remarkable role in forestland.

关 键 词：祁连山 水源涵养林 持水能力 土壤入渗 蓄水能力 效益 

分 类 号：S718[农业科学—林学]