水土保持治理措施对流域经济结构的影响

目的]研究甘肃省天水市麦积区柳沟流域以经果林为主体的水土保持综合治理措施对流域投入产出效益和农业产业内部结构变化的影响,为流域农业产业高效、持续发展提供理论支撑。方法]基于麦积区与柳沟流域2002—2011年社会经济数据,采用农村经济结构效应分析法和偏离份额分析法。结果]治理前后柳沟流域区域经济增长率达103.63%,土地利用结构调整带来的贡献份额占总产值总增量的42.86%。结论]柳沟流域农业生产部门间经济增长高于麦积区平均水平,经济增长发展势头较好,同时随着柳沟流域开发水平的提高,经果业经济增长空间变小。今后在发展经果业稳定的基础上,应着重于农业生产水平的提高。

Impacts of Soil and Water Conservation Measures on Watershed Economic Structure

Objective] Liugou watershed in Maiji District of Tianshui City was taken as a case to study the impacts of comprehensive soil and water measures practiced mainly by economic forest plantation on the input-output efficiency and the change of internal structure of agricultural industry in order to provide a theoretical support for agriculture efficient and sustainable development.Methods] Based on the data collected from Maiji District and Liugou watershed during 2002-2011, analysis approaches of the rural economic structure effect and static shift-share were used.Results] From conservation practices on, the watershed economic increase rate achieved 103.63%, in which, land use restructure contributed 42.86% for the total output increment.Conclusion] Watershed agricultural economic growth was relatively higher on an average than the one of Maiji district and displayed an increasing trend. However, a fact should be noted the escalation gap of economic forest might eventually narrow down as the watershed begins to be fully developed and the economy levels up. Hence, in the future, the cash forest for soil and water conservation should be kept a steady development; Beside, an overall improvement of watershed agricultural production technology should be stressed.