基于TM影像的内蒙古奈曼旗土地利用/覆被变化分析  

Analysis on the Land Use/Coverage Change in Naiman Banner Based on TM Images

作　　者：杜子涛[1,2] 颜树强[1,2] 杨小明[1,2] 王德军[1,2] 任海峰[1,2] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《安徽农业科学》2011年第21期13136-13139,13191,共5页Journal of Anhui Agricultural Sciences

基　　金：国家重点基础研究发展计划项目(2007CB714406);国家科技支撑计划项目(2008BAC34B03);欧盟项目CEOP-AEGIS(FP7-ENV-2007-1Grant nr.212921)

摘　　要：以1987、1999和2007年的TM影像为数据源,以内蒙古奈曼旗作为研究区,结合野外调查资料,选择训练样本,利用支持向量机分类法,提取各类地物的遥感信息。运用GIS空间分析功能,对奈曼旗1987～2007年的土地利用/覆被变化情况进行分析。结果表明,1987～1999年奈曼旗沙化土地面积在持续扩展,流动沙丘和半流动沙丘面积在增加,而1999～2007年流动沙丘和半流动沙丘面积在减少,沙化土地面积开始呈减少趋势。这说明2000年国家启动的京津风沙源治理工程和"退耕还林还草"工程对土地沙化防治和植被恢复开始取得成效。With the TM images of 1987,1999 and 2007 as the data source and the Naiman Banner as the study area,according to the field investigation data,the paper selects the training samples and uses the support vector machine classification method to extract the RS information of every kind of ground feature.By using GIS spatial analysis function,the change of land use/coverage in Naiman Banner from 1987 to 2007 is analyzed.As indicated by the results,during 1987-1999,the area of desertified lands is expanding,the area of the travelling and semi-mobile dunes is enlarging,while during 1999 to 2007,the area of the travelling and semi-mobile dunes is reducing,and the area of desertified lands starts to decrease.This indicates that Beijing-Tianjin Sand Source Treatment Project and＂Conversion of Cropland to Forest and Grassland Project＂since 2000 have remarkable achievements in land desertification control and vegetation recovery.

关 键 词：奈曼旗 土地利用/覆被 TM影像 支持向量机 

分 类 号：F301.24[经济管理—产业经济]