Introduces a kind of method of water under meeting degradation in water circumstances, and after adding sediment area, it achieves the economic results.

Forests and tree cover combat land degradation and desertification by stabilizing soils, reducing water and wind erosion and maintaining nutrient cycling in soils.

The livestock sector is probably the largest source of water pollution, contributing to eutrophication, 'dead' zones in coastal areas and degradation of coral reefs.