重庆市主城区土地利用变化空间分异研究

A Research on the Land Use Change Spatial Differentiation in the Main Districts of Chongqing

本文选取重庆市主城区1988—2007年3个时期(1988、2001、2007年)的TM、中巴遥感影像资料,将研究区划分为11个区,从土地利用变化和土地利用综合程度变化等方面分析了研究区土地利用空间分异特征,并对土地利用变化驱动因子进行剖析。结果表明:1988—2007年土地利用结构变化总趋势为建设用地、林地面积增加,耕地面积减少;耕地、林地年变化速度较快,建设用地年变化速度最快,灌丛、水域相对居中;其中耕地主要转入绿地和建筑用地,林地经过了"减-增"的变化过程,灌丛面积持续增长;研究时期内,1988年土地利用综合程度指数为279.38,2001年增长为282.01,2007年土地利用综合指数增长最高为282.13。研究提示耕地转为建设用地对土地利用综合指数贡献最大。

This paper selects the TM,CBERS remote sensing image data about the main districts of Chongqing of three times（1988,2001,2007） to analysis the land use spatial differentiation characteristics from land use change and land use comprehensive degree change and discuss driving factors of land use change based on the dividing of 11 subareas in the study area.The results are shown in the following aspects.From 1988 to 2007 year,land use/land cover was in the dynamic change processes,the area of construction land and forest land increase and the area of farmland decrease.The relative rate of change of construction is the fastest,second,the farmland,third,the shrub land and water than other land use types.The farmland was transferred mainly into the construction land and green space,the area of forest land has been a ＂reduce-increase＂ of the change process,the shrub area has been growing.The land use comprehensive indexes were 279.38 in 1988,282.01 in 2001 and 282.13 in 2007,respectively.The conversion of farmland into construction land makes contribution to the land use comprehensive indexes obviously.