新疆城乡建设用地动态变化的时空特征分析

Study on the Spatial-temporal Characteristics of the Rural-urban Construction Land use Change in Xinjiang

利用20世纪80年代末和90年代末两个时期的LandsatTM卫星影象,运用空间分析和统计分析方法,分析了新疆城乡建设用地变化的时空特征。结果表明:①在这10年的时间里,新疆城乡建设用地扩展明显,其中城镇用地增长迅速。城乡建设用地类型及其结构变化在东疆、南疆和北疆三大区域和县(市)级区域存在明显的差异。②新疆城乡建设用地扩张以占用耕地和草地为主。③新疆城乡建设用地变化驱动因素主要是人口增长、国民经济的增长、第三产业的发展。

The paper, based on remote sensing, GIS and Landsat TM digital images and the methods of spatial analysis and statistical analysis, analyzed the spatial-temporal characteristics of the rural-urban construction land use changes in Xinjiang from the end of the 1980s to the end of the 1990s. The primary findings show as the fowlling: 1) The rural-urban construction land use has been increased in many area. The expansion speed of the urban land use has been accelerated during the 10 years. The sub-land use changes of the rural-urban construction land use are characteristics by conspicuous regional differentiation among the three main region and among the 85 counties of Xinjiang. 2) The change of rural-urban construction land use is mainly transformed from cultivate land and grassland. At the same time, the change of each kind of land use is characteristics of conspicuous regional differentiation. 3 ) The force of rural-urban construction land use changes in Xinjiang is still the expansion of urban land and the rural settlement land, undoubtedly affected by the natural environment and social and economic conditions, which is main in the population increasing, GDP development and the third industry improvement.