GIS支持下的盐池县土地沙漠化动态遥感监测与预估  

REMOTE SENSING MONITORING AND FORECAST OF THE DESERTIFICATICATION TRENDS OF YANCHI COUNTY BY GIS

作　　者：李元科[1] 全志杰[1] 吕恒 张美亮 

机构地区：[1]西北林学院林学系,陕西杨陵712100

出　　处：《干旱环境监测》1998年第4期213-217,共5页Arid Environmental Monitoring

摘　　要：以2个不同时期遥感图像为主要信息源，分别解译编制2期土地沙漠化类型图，在ARC／INFO地理信息系统支持下，建立空间数据库，获得了盐池县1985—1995年土地沙漠化动态图和动态转移数据矩阵，可以定位、定性、定量地显示出前后两期间动态演变格局。并用Markov链模型对未来演变趋势进行模拟和预测。说明盐池县属于正在发展的沙漠化地区，沙漠化程度进一步加剧，同时存在着“一边治理，一边破坏”的双重现象。The dynamic pattern and transfer data matrix of the desertification trends of Yanchi Country in 1985-1995 which can indi-cate the dynamic evolution patterns of different phase in locating, qualitative and quantiative are obtained by explaining two-period desertification pattern of the remote sensing images in two phases and establishing spatial database with ARC/INFO. The evolution trends is simulated and forecasted by Markov chain model. The results show that Yanchi Country is a de-veloping area of desertification, the desertification condition is aggravating with the dual phenomenon of treatment and con-trol abreast with destruction.

关 键 词：土地 沙漠化动态 GIS 遥感监测 土壤监测 

分 类 号：X833[环境科学与工程—环境工程] X84