艾比湖绿洲农业区土地利用动态与盐碱化影响的遥感应用研究  

Application of remote sensing technique for land use changes and soil salinization in agricultural area of oasis

作　　者：亢庆[1] 张增祥[1] 王长有[1] 于嵘[1] 

机构地区：[1]中国科学院遥感应用研究所,北京100101

出　　处：《农业工程学报》2006年第2期73-78,共6页Transactions of the Chinese Society of Agricultural Engineering

摘　　要：采用1972～2001年的4期MSS和TM图像为数据源，通过人工解译方法获得新疆艾比湖地区土地利用数据，并使用土地利用转移矩阵和土地利用变化指数等方法分析近30a该地区土地利用动态情况。在此基础上，应用基于光谱分析的光谱角度填图（SAM）分类方法从2004年ASTER和SPOT图像上提取土地盐碱化现状信息，与人工解译的土地利用数据进行空间分析，对农业区土地利用受盐碱化影响的程度进行评估，并对盐碱化因素限制下的农业发展提出建议。研究结果表明，近30a来该地区耕地面积持续增加，新开垦耕地主要来源于未利用地的开发。新开垦耕地明显地受到盐碱化的影响．农业生产将受到一定威胁。Based on the MSS and TM images of four periods from 1972 to 2001, land use in Aibi Lake, Xinjiang was gained and the dynamic changes of land use were analyzed by the methods of land use transition matrixes and land use change exponent. A method of spectral angle mapping based on spectral analysis was performed to extract information of land salinization with ASTER and SPOT images in 2004. The thematic map of land salinization extent was integrated with data of land use changes to evaluate the influence of land salinization to farmland. The results show that the change of farmland is most obvious during 30 years. And the reclamation of waste land is influenced by land salinization

关 键 词：遥感 绿洲 农业区 土地利用 盐碱化 干旱区 

分 类 号：S127[农业科学—农业基础科学]