郭罗沟流域综合治理效益分析

Benefit Analysis of Comprehensive Control of Guoluogou Watershed

郭罗沟流域是长治工程项目在甘肃南部的一个项目区 ,该项目区经过 7年治理 ,1997年底水土流失治理程度达到 86 .7% ,农业生产总值已由 14 3.6 6万元提高到 4 84 .4万元 ,林草覆盖率已由 2 1.7%提高到 4 6 .6 % ;蓄水与拦沙效益分别达到 5 2 %和 73% ;人均纯收入由 2 76元提高到 10 0 2元 ;显示出显著的经济、社会和生态效益 ,表明该流域治理措施的布局、配置是合理的 。

The implementation period of soil and water conservation comprehensive control in Qincheng,Gansu Province was seven years. By the end of 1997, the harness degree of soil and water loss reached 86.7% in project area, the plant cover rate has been increased from 21.7% to 46.6%, the water retention rate was come up to 52%,the preserving soil rate was come up to 73%, the agriculture production value increased from 1 436.6 yuan to 4 844 yuan,and per capita net income increased from 276 yuan to 1 004 yuan, showing remarkable economic, social and ecological benefits.