黄土高原沟壑区王东沟流域土地利用效益评价

依据黄土高原沟壑区王东沟流域1986-2007年生态经济系统演变过程调查、监测资料和研究成果,建立了黄土高原沟壑区王东沟流域土地利用效益评价指标体系。运用层次分析法确定指标权重,对黄土高原沟壑区王东沟流域1986-2007年的土地利用效益进行了定量评价和动态分析。结果表明:区域土地利用效益在这20余年中呈增长态势,分别于1991年、1998年、2003年达到峰值点。影响区域土地利用效益值的主要因素为区域的果业和第三产业。

According to investigation,monitoring data and research achievements of the Wangdonggou watershed in Loess hilly and gully region from 1986 to 2007,the assessment index system of land use was established in Wangdonggou watershed.The weight of indicators was estimated by Analytic Hierarchy Process(AHP),and its benefit assessment of land use from 1938 to 2005 was assessed quantitatively.The results showed that the benefit assessment of land use increased in 20 years,which reached the peak point in 1991,1998 a...