Introduces a kind of method of water under meeting degradationinwater circumstances, and after adding sediment area, it achieves the economic results.
介绍了在遇到矸石泥化情况下的一种煤泥水沉清处理的办法,并介绍了加大沉淀面结以后所带来的经济效益。
2
Forests and tree cover combat land degradation and desertification by stabilizing soils, reducing water and wind erosion and maintaining nutrient cycling in soils.
通过稳定土壤,减少水蚀和风蚀并维持土壤养分循环,林木覆盖能够防止土地退化和荒漠化。
3
The livestock sector is probably the largest source of water pollution, contributing to eutrophication, 'dead' zones in coastal areas and degradation of coral reefs.