Using the methods of typical region investigation, experimental study in site,and chemical analysis of samples,impact of forest vegetation destruction and restoration on soil erosion change,characteristics of natural ero-sion under the condition of natural ecological balance,man.

Study on ecological restoration and reconstruction in mining wasteland;

Based on actuality, cause and harm of soil erosion and water loss in Sanchuanhe watershed, the basic countermeasures of ecological restoration and reconstruction are put forward according to principle of restoration ecology.

According to the analysis of the characters,research status and research directions of the wetland ecological restoration and reconstruction,this paper brought forward the necessity of the informationization of wetland restoration and reconstruction and the shortage of existed information system.