The first category is necessary to use remote images to interpret the degree and distribution of karst rocky desertification area.

景观分类是利用遥感影像特征解译石漠化强度和分布面积所必不可少的；

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In serious rocky desertification area, the indexes of density of population, gathering degree of peasants, workforce quantity are relatively lower.

在石漠化严重的地区，人口密度、农户居住的聚集程度、单位面积上的劳动力数量等人口指标相对较低。

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This study investigated chemical element concentrations in calcite, calcareous soil and restored plants in a limestone rocky desertification area in Huaxi, Guizhou Province.

对贵州花溪区石灰岩、石灰土及定居植物中化学元素含量进行研究。

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Man lived in this area before the last desertification or before the drastic climatic changes ended with the hot dry conditions and development of deserts.

BBC: Desert finds challenge horse taming ideas