近20年来苏锡常地区建设用地扩展及耕地占用态势的遥感分析  

Remote Sensing-Based Analysis For Expansion of Construction Land and Cultivated Land Cut in recent 20 Years

作　　者：刘文超[1] 董金玮[2] 

机构地区：[1]河海大学水资源环境学院,南京210098 [2]中国科学院地理科学与资源研究所,北京100101

出　　处：《地球信息科学》2009年第4期549-555,534,共8页Geo-information Science

基　　金：中科院知识创新重大项目"耕地资源和耕地产粮能力监测与预警"课题(KSCX1-YW-09-01)

摘　　要：本文在苏锡常地区已有三期矢量数据(1988、1995和2000年)的基础上,对2008年TM影像进行监督分类,经过人工解译辅助处理得到20世纪80年代以来4期土地利用时间序列数据。研究了近30年来,苏锡常地区建设用地扩展及其对耕地占用的态势。主要结论有:(1)从整体扩展面积看,1988年到2008年建设用地面积扩展总计2 354.55km2,其中,城市扩展面积最大,为1 257.26km2,占到总扩展面积的一半,其次,是建制镇的扩展,面积达695.91km2,农村居民点扩展面积为355.96km2,扩展最少的是工矿交通用地,为45.42km2;(2)城市扩展所占用的土地资源主要来源于对耕地的占用。从三个不同时期来看,1995-2000年耕地转化为建设用地最少,为262.36km2,1988-1995年占用耕地面积656.36km2,而在2000-2008年耕地被占用高达1343.56km2。这些数据为我国东部城市化地区土地利用规划与管理政策的制定提供决策依据。Rapid economic development has happened in the east coast of China since the Reform and Opening- up, at the same time, following a remarkable expansion of construction land. It is significant for suitable and inten- sive land use to investigate expansion features of four kinds of construction land,i, e. urban area, towns, rural settle- ments, roads and industrial sites according to economic development of cities and villages. Based on the three times of vector data （1988,1995 and 2000） ,we acquired land use data in 2008 by supervised classification of TM ima- ges. Four times of land use data （1988,1995,2000 and 2008） were collected as data sources for land use change monitoring. And this paper analyzed the temporal and spatial characteristics of land expansion and its impact on cultivated land in Suzhou-Wuxi-Changzhou Region over the past 20 years. Main results showed that： （1） The overall expansion area of construction land from 1988 to 2008 reached 2 354.55km2 ,and the area of urban expansion was the largest,which was 1 257.26km2, accounted for a half of the total expansion area. The ex- pansion areas of towns, rural settlements, industrial and transport land were 695.91,355.96 and 45.42km2, respec- tively ; （2） Urban expansion occupied a great deal of the cultivated land. The conversed areas from cultivated land into construction land were different for the three periods, which were 262.36km2 in1995 -2000,656.36kin2 in 1988 - 1995, and 1343.56kin2 in 2000 - 2008. Results from this paper could offer important bases for land-use planning and management decision making in urbanized regions in the east of China.

关 键 词：苏锡常地区 建设用地扩展 改革开放 耕地资源 遥感 

分 类 号：F323.211[经济管理—产业经济] F321.1