| GIS支持下的盐池县土地沙漠化动态遥感监测与预估 |
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| 引用本文： | 李元科 全志杰. GIS支持下的盐池县土地沙漠化动态遥感监测与预估[J]. 干旱环境监测, 1998, 12(4): 213-217 |
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| 作者姓名： | 李元科 全志杰 |
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| 作者单位： | 西北林学院林学系!陕西杨陵，712100，西北林学院林学系!陕西杨陵，712100，西北林学院林学系!陕西杨陵，712100，西北林学院林学系!陕西杨陵，712100 |
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| 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。
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| 关 键 词： | 上地沙漠化动态 GIS 遥感 Markov键模型 |
REMOTE SENSING MONITORING AND FORECAST OF THE DESERTIFICATICATION TRENDS OF YANCHI COUNTY BY GIS |
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| Li Yuanke,Quan Zhijie,Lu Hen,Zhang Meiliang. REMOTE SENSING MONITORING AND FORECAST OF THE DESERTIFICATICATION TRENDS OF YANCHI COUNTY BY GIS[J]. Arid Environmental Monitoring, 1998, 12(4): 213-217 |
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| Authors: | Li Yuanke Quan Zhijie Lu Hen Zhang Meiliang |
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| Abstract: | 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. |
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| Keywords: | Desertification trends GIS Remote sensing Markov cbain model |
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