1990-2008年江苏省土地利用特征及MSA指数变化分析  

Analysis on Land Use and MSA Change in Jiangsu Province During the Period of 1990 to 2008

作　　者：雷军成[1,2] 徐海根[2] 曹铭昌[2] 关庆伟[1] 丁晖[2] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037 [2]环境保护部南京环境科学研究所,南京210042

出　　处：《水土保持研究》2015年第1期194-200,共7页Research of Soil and Water Conservation

基　　金：国家科技支撑计划(2012BAC01B01)

摘　　要：为了解1990—2008年江苏省土地利用及其导致的平均物种丰富度指数的变化特征,更好地为今后江苏省土地利用规划及相关政策的制定提供更详实的资料。以江苏省1990—2008年5期土地利用遥感解译数据为基础资料,借助GIS技术和数理统计方法,分析江苏省1990—2008年土地利用及其平均物种丰富度指数的变化特征。结果表明:1990—2008年江苏省土地利用和平均物种丰富度指数都发生了明显的变化。综合土地利用动态度和土地利用程度综合指数总体上呈上升趋势;耕地成为土地利用类型流失的主要"源",而建设用地成为土地利用类型流失的主要"汇";建设用地重心明显地向东南方向移动;土地利用变化具有明显的时空不均衡性,2000年以后土地利用变化的数量和强度明显高于2000年以前;苏南地区土地利用转化频次明显高于苏北地区;研究时段内江苏省各土地利用类型在13个地级市的空间分布,总体上差距不大;反映生物多样性变化的平均物种丰富度指数呈持续下降趋势。In order to provide more explicit information to guide future land use planning and related policies making of Jiangsu Province,the change characteristics of land use and the mean species abundance（MSA）index of Jiangsu Province were analyzed with the period of 1990 to 2008.Land use data of Jiangsu Province were derived from interpreting remote sensing images.Five time nodes were selected,namely,1990,1995,2000,2005 and 2008.GIS analysis and mathematical statistics ways were used.The results showed that the land use of Jiangsu Province had changed a lot during the period of 1990 to 2008;great changes had taken place on different land use types.Generally speaking,comprehensive land dynamic degree index and land use degree comprehensive index presented rising tendency with time going;cultivated land was the source of land use loss,while construction land was the sink of land use loss;the centroids of different land use types showed different shift style,among of them,the centroids of construction land shifted southeast evidently;There was significant unbalance of land use change between different area and temporal;from the aspect of time,the quantity and intensity of land use change after 2000 were higher than those before 2000apparently;from the aspect of spatial scale,the transformation frequency of land use in southern Jiangsu Province was higher than that in northern Jiangsu Province;in the study period,the distribution of different land use types didn＇t show difference significantly among 13 prefecture level cities;the MSA index which reflected the change of biodiversity decreased continuously.

关 键 词：江苏省 土地利用类型 空间分布 转换 平均物种丰富度 

分 类 号：F301.24[经济管理—产业经济]