Abstract: This paper discussed the impact assessment of wetland ecological environment. The impact assessment of non-polluted eco-environment should be put on the important status, because of the special characteristics of wetland environment. The impact analysis of the project and the immigration on the change of the hydrological regimes, the flora and faunal population should be emphasized. From the classification of wetlands, integrated the potential ecological environment benefit and the possible influence of the project to assess the acute and chronic influence, and put forward the measurements and substitutable scheme to mitigate the influence. Emphasis should be put on maintaining the existed ecological process, natural system and protecting the benefit and the function of wetlands.

Key words: Watershed, Vegetation, Soil erosion