半湿润地区的水土流失和土地沙化在很大程度上与人类不合理的开发利用有关。
Soil erosion and desertification in the semimoisture zone have a great connection with irrational exploitation.
地质环境具有资源与灾害的双重属性，不合理的开发利用将引发环境负效应，其影响具有扩散性与延滞性。
Geological environment have double attribute of resources and calamity. Unreasonable exploitation of resources, will lead to negative environmental effect.
地质环境具有资源与灾害的双重属性，不合理的开发利用将引发环境负效应，其影响具有扩散性与延滞性。
Geological environment have double attribute of resources and calamity. Unreasonable exploitation of resources, will lead to negative environmental effect. The effect is expandable and postponable.
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