黄土高原沟壑区小流域土地利用特征变化分析——以长武王东沟为例

为了研究黄土高原沟壑区小流域土地利用特征变化进而促进黄土高原沟壑区的进一步开发治理,本文采用景观生态学和计量地理学的分析方法,选择黄土高原沟壑区的典型代表-王东沟小流域为研究对象,从土地利用景观结构、土地利用率、土地利用程度、土地利用配置特征及土地生产力等方面分析了该流域近20年来不同治理阶段土地利用特征变化情况。经过研究发现该流域土地利用景观结构、土地利用率和土地利用程度都有所增加;土地利用集中程度虽稍有减弱但并不明显,土地利用配置主体发生了显著的变化;土地生产力也得到大幅度的提高。从总的来看,土地利用特征从1986年到1994年变化明显,而从1994年到2002年变化不明显,这说明在黄土高原治理的不同阶段应该采用不同的治理措施。

Analysis on Land Use Characteristic Changes in Regional Gully Watershed on Loess Plateau--A Case Study of Wangdonggou Watershed

This research analyzed the land use characteristic of Wangdonggou watershed which was in order to apply landscape ecology method and quantitative geography method classified as the classic representative area of gully region on loess plateau in different years for the further development in this area. The landscape structures and the proportion of land use and land-use degree were all increased especially from 1986 to 1994. The land use concentration degree was trending to decentralization but not very significant. On the whole the land use characteristics changed significantly from 1986 to 1994 but not significantly from 1994 to 2002. It told us that we should take different measures in different stages during controlling the loess plateau.