城市用地遥感监测与动态变化分析——以成都市土地利用为例

Satellite Remote Sensing and Dynamic Variation of Urban Land Use Changes——Taking Chengdu City as an Example

本文以成都市为例,应用1996和2002年两期的TM影像资料,对该市6年来的土地利用变化情况及其特点进行了研究,分析出该市各类土地利用数量变化的幅度、速度、区域差异以及土地利用空间变化的主要类型、分布特征和区域方向。结果表明:①从1996年至2002年,成都市土地利用结构变化较大,主要表现为耕地、未利用土地的大量减少和林地(园地)、城镇、居民建设用地的大幅度增加,而水域、草地面积变化不十分明显;②6年间,成都市不同土地利用类型之间的相互转化比较复杂,其主要发生在耕地、林地(园地)、城镇、居民建设用地及未利用土地之间;③成都市各类土地利用变化类型分布呈现出明显的区域差异性。同时,相同土地利用变化类型在不同区域的空间分布状况也存在着较大的差异。

Based on the RS and GIS methods,we analyze the land use information from 1996 and 2002 TM images,then from both spatial and temporal aspects ,we analyze the situation of land use change in the study area. The results are shown as follows： 1） The land use structure changed greatly in Chengdu city during 1996 to 2002. The areas of cultivated land and un-used land have been decreasing. The areas of forestland and land for housing and other construction purposes have been increasing. 2）During this period of time, the inter-transitions between different types of land use are very complex, mainly occurring among cultivated land,forestland, land for housing and other construction purposes and un-used land. 3）At same time,the inter-transitions between different types of land use vary in different parts of the city. Meanwhile, the inter-transitions between the same types of land use also vary in different parts of the city.