Eco-environmental quality evaluation of Wuleidaowan national wetland based on Analytic Hierarchy Process(AHP) approach

Abstract Wetland ecosystem can be influenced by many eco-environmental indexes, which will affect the ecological environment quality to varying degree. In this study, weights of different indexes that will have a influence on wetland ecosystems can be determined using Analytic Hierarchy Process (AHP) approach. Based on the field survey of Wuleidaowan National wetland and distribution of 400 questionnaires to environmental experts and workers managing wetland, of these 398 were returned, the environmental evaluation of wetland system can be fully conducted. The target of the study was divided into four main evaluation criteria, ecological resources(B 1 ), wetland landscape(B 2 ), infrastructure(B 3 ), management(B 4 ), and the four evaluation criteria were further divided into 17 indexes at the bottom level. The results of target index layer sorted by combination weight analyses indicated that species diversity, ecosystem typicality, overall style and wetland water resources have the greatest influence on determining the ecological environmental quality of Wuleidaowan National wetland. In addition, the comprehensive evaluation index(CEI) of Wuleidaowan National wetland is 0.9443, namely 0.7<CEI<1.0, showing ecological environment in Wuleidaowan wetland is very excellent on the whole. However, based on the findings, there is a need further to strengthen community co-management, regulate conservation of recovery, improve science value and aesthetic value and optimize the mission facilities to plan, manage and protect the Wuleidaowan National wetland ecosystem.