Remote sensing information is widely used in the study of desertification evaluation on account of its merits in its cyclical, macro and systematic aspects.
遥感信息以其周期性、宏观性和系统性方面的优势，在土地荒漠化评价中得到广泛应用。
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。
Using multidimensional gray dynamic evaluation, comparisons of both static change and dynamic change on desertification control efficiency were studied in Hequ County, Shanxi Province.
通过对山西省河曲县荒漠化防治效益的多维灰色动态评估，实现了静态的横向比较和动态的纵向比较。
Therefore, it is very necessary to research methods and establish a framework of desertification vegetation monitoring and evaluation information system at the county level.
因此，以县为单元，研究建立荒漠化植被监测的框架和信息处理和评价方法很有必要。
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；
Study of desertification quantitative evaluation by remote sensing information is a hot spot of remote sensing application research.
基于遥感手段的荒漠化程度定量化评价是当前遥感应用研究中的一个热点问题。
In this paper, the program, criteria system, methods and indices of evaluation of economic loss of sandy desertification have been introduced to readers.
本文对沙漠化经济损失货币估值的程序、指标体系、方法和技术参数等进行了分析与探讨。
The major environmental problems of the region are soil erosion, desertification and the degradation of vegetation, which make the region a sensitive area on the evaluation of ecological environment.
本区存在的主要环境问题主要为水土流失，土地沙化和植被退化，在生态环境敏感性评价上属较敏感区域。
The major environmental problems of the region are soil erosion, desertification and the degradation of vegetation, which make the region a sensitive area on the evaluation of ecological environment.
本区存在的主要环境问题主要为水土流失，土地沙化和植被退化，在生态环境敏感性评价上属较敏感区域。
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