The evaluating index system for estuary ecosystem safety based on PSR model

PSR model is an efficient model for evaluating and managing ecosystem and has been used more and more popular in the field of ecosystem assessment in recent years.This paper introduced the origin,theories and types of PSR model,as well as its application in the field of ecosystem assessment,especially the assessment of base-estuary and ocean ecosystem safety,searched for assessing the estuary ecosystem safety.Practicability of PSR model in the assessment of estuary ecosystem safety was analyzed.It constructed the index system of estuary ecosystem safety assessment and put forward some problems about this model eventually.