五官小流域综合治理措施及效益分析

通过野外调查和农户跟踪调查,研究了金沙江下游五官小流域综合治理措施,包括生物措施、工程措施、农耕措施及其它配套措施,并进行了生态效益、经济效益和社会效益分析.结果表明,林草覆盖率由25%提高到81%,增加了56%;年均土壤侵蚀量由2.67×104 t减少到6.5×103 t,减少了75.77%;粮食产量由3645 kg/hm2增加至9330 kg/hm2,提高了156%;人均粮食产量由282 kg增加到416 kg,提高了417.52%;农业总产值由41.48万元增加至439.74万元,提高了960.13%;人均纯收入由184元增加至1660元,提高了802.17%.最后总结了五官小流域综合治理的成功经验及其对金沙江下游地区小流域治理的借鉴意义.

Analysis of Comprehensive Management Measures and Benefits in the Wuguan Small Watershed

By field survey and follow-up investigation on famers,the technology on the comprehensive management in Wuguan small watershed in the lower reaches of Jinsha River is studied,including biological measures,engineering measures,farming practices,and other complementary measures.The ecological,economic and social benefits are further analyzed.Results showed that forest and grass coverage rate was improved from 25% to 81%,an increasing of 56%;the average annual amount of soil erosion was reduced from 26 700 to ...