Environmental Impact Post Assessment of the First Phase of Qinghai San Jiang Yuan ---Based on AHP

This paper is based on the post-project evaluation perspective, which combined with the general theories, methods and practice of project evaluation and post-evaluation, choosing the First Phase of Qinghai San Jiang Yuan Ecological Protection and Construction project as a case to evaluate its environmental impact and according to characteristics of the project itself analyze its ecological benefits through the comparative analysis, analytic hierarchy process and fuzzy evaluation method. On one hand to provide useful references for similar projects after the evaluation, on the other hand to give the suggestion to relevant departments about how to formulate investment plans and policies of ecological construction.