Initial Study of Environmental Impact Assessment for Plan(PEIA) on Technology Frame and Establish- ment of Indicator System

This paper analyses principle for PEIA. The technology frame and establishment of indicator system are discussed in it.It points out that the best intervention time for PEIA is the begin of plan making.There are two models of indicator system establishment:" ecology-environment-use of resource and energy-society-economy " and the model based on DPSIR.The application of AHP ( analytic hierarchy process )for quantifying with reason the weights of each indicator of the system is studied in this paper.