Assessment on the commonweal values of wetlands

Assessment on wetland values is being payed more and more attention by researchers, administrators and public. This question is related to human's sustainable development in biosphere. This article analyses the commonweal values of wetlands and establishes an index system by Analytical Hierarchy Process, then assigns quantitatively the system through calculating matrix eigenvalue and characteristic vector, at last, sets up an integral way of commonweal value assessment .This paper takes Zhalong Wetland and Xianghai Wetland as study cases , the assessment results show that the both wetlands belong to the first grade importance protective wetland, which validates the method's practicability , scientific nature and rationality.