乌鲁木齐市土地利用变化及其驱动力分析

目的]了解西北干旱地区LUCC的时空变化特征及驱动力机制。方法]选取乌鲁木齐市2005、2010、2015年3期遥感影像及统计年鉴数据,基于RS、GIS软件提取土地利用类型的信息,运用数理统计的方法,从土地利用变化幅度、土地利用类型转移矩阵和单一土地动态度变化分析土地利用类型变化的过程,建立经济社会驱动力因素与土地利用类型变化相关关系矩阵。结果]耕地和建设用地的面积明显增加,而未利用地和水域在减少,天然植被基本保持不变;影响乌鲁木齐市土地利用覆被变化的社会经济驱动因素主要为经济发展。结论]乌鲁木齐市土地利用的发展应加强土地保护的措施、优化土地利用布局。

Land Use Change of Urumqi City and Its Driving Mechanism

Objective]The aim was to understand the spatial and temporal variation characteristics and drive mechanism of LUCC(land-use and land-cover change)in the northwest of China.Method]Three period remote sensing images and statistical yearbook data in 2005,2010 and 2015 were analyzed by taking Urumqi as a study case.Three aspects including land use structure,land use amplitude and converting ma-trix of land use type were analyzed for the LUCC during three periods.Based on the information of land use types from RS and GIS software, and using the method of mathematical statistics, the land use change correlation matrix with economic and social drive mechanism was estab-lished.Result]The area of arable land and land for construction was increased obviously, while the area of unused land and water was de-creased, and the natural vegetation basically remained unchanged.The main driving factors were economic development.Conclusion]So de-velopment of land use in Urumqi should strengthen the measures of land protection and optimize the layout of land use.