川江流域是长江上游经济区的核心区，也是国家西部大开发的重要地区，其土地利用变化对国土资源优化布局、生态屏障建设以及下游流域生境保护具有显著作用。该研究以2000年、2005年及2013年3期的土地利用数据为基础，分析了川江流域土地利用变化动态变化特征，并利用植被指数、植被覆盖度变化对研究区土地利用合理性进行评价。结果表明，该流域土地利用类型在数量、结构上都存在明显的分异特征。2000年－2013年综合土地利用动态度0.83 %，表明这期间每年每100 km2土地中有0.83 km2的利用方式发生了改变。研究认为，土地利用类型间的多维向转化是引起土地利用时空分布变化的直接表现形式。2000年－2013年期间植被指数NDVI出现好转现象，表明近13年来川江流域土地利用具有一定程度上的合理性。

Chuanjiang Basin is not only an economic core zone of the Yangtze River upstream, but also an important part of the Country’s Western Development. Changes of land use in valley will contribute to optimize the land use structure, to construct the ecological shelter zone and to protect the habitat of downstream watershed. Based on the land use data in 2000, 2005 and 2013, by using ArcGIS software and other statistical methods, this paper analyzed the characteristics of land use pattern on the space-time dynamic changes in Chuanjiang Basin and made evaluation by the normalized difference vegetation index analysis. The results showed that there were conspicuous differentiation characteristics of the land-use types in spatial scale and component. The land use comprehensive dynamic changes was 0.83 percent, which indicated that 0.83 km2 land per 100 km2 land changed its way of use every year. The multidimensional transformation of land use types was direct manifestation that caused the temporal and spatial distribution changes of land use from 2000 to 2013. Throughout duration of 2000 to 2013, the NDVI was obviously improved, which indicated that the land use changes had certain rationality in the recent 13 years in Chuanjiang basin.

国家科技支撑计划课题“气候变化对水资源影响与风险评估技术（2012BAC19B03）