【Key words】 Regional Desertification； Soil Water； Water Resources； Managment Tragedy； Yanchi Sand Land；
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regional desertification degree 区域沙漠化程度
Remote sensing, with the merit of large information capacity, huge observation scope, high accuracy and speed, has become the main means of regional desertification monitoring and evaluation.
近些年来,遥感以其信息量大、观测范围广、精度高、数据更新速度快等优点,已成为区域荒漠化监测与评价的主要手段。
参考来源 - 基于混合象元分解的荒漠化监测与评价·2,447,543篇论文数据，部分数据来源于NoteExpress
Remote sensing, with the merit of large information capacity, huge observation scope, high accuracy and speed, has become the main means of regional desertification monitoring and evaluation.
近些年来，遥感以其信息量大、观测范围广、精度高、数据更新速度快等优点，已成为区域荒漠化监测与评价的主要手段。
Meanwhile, considering the ratio of non desertified land area and different degree desertified land area, a regional evaluation model of land desertification level was given out.
在此基础上，考虑到非荒漠化土地及各程度荒漠化土地在面积上的组成比例，给出区域性土地风蚀荒漠化总体水平评价模型；
The regional classification and distribution, formation process and developing trends of sandy and water eroding desertification are discussed mainly in this paper.
本文仅对北方沙质荒漠化、水蚀荒漠化两种主要的荒漠化类型的区域地质分布、成因及其发展趋势进行探讨。
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