Ecosystem Health Evaluation Of Qinwangchuan National Wetland Park Based On PSR Model

As the ecological problems of wetland become more and more serious in the world,the research on wetland ecology is heating up gradually.As an important means to protect and repair wetland ecology,the establishment of wetland park has attracted wide attention at home and abroad.Therefore,the scientific assessment of the ecological health of the wetland park has been thoroughly evaluated,which can reflect the significance of its management in the wetlands,promoting the development of wetland science.In this paper,the Qinwangchuan National Wetland Park as the research object.On the basis of remote sensing interpretation,the landscape pattern is analyzed by using landscape pattern index method.Taking the pressure-state-response(PSR)model as the framework structure,the ecosystem health evaluation index system of the Qinwangchuan National Wetland Park is established,which contains 34 indicators at 4 levels including the general target,target layer,criterion layer and index layer.Using Analytic Hierarchy Process(AHP)and Fuzzy Comprehensive Evaluation(FCE),it has been evaluated on the health status of the Qinwangchuan National Wetland Park.The results show that:1)The landscape pattern before and after the construction of qinwangchuan national wetland park were analized,and shows that:(1)The area of river wetland,swamp wetland,artificial wetland,woodland,artificial grassland,traffic land,construction land and water conservancy facilities all increased to a certain extent.River wetland and forest land increased the most significantly,with increases of 26.88% and 19.14% respectively.There was a negative growth of bare and irrigated land,in which the negative growth rate of bare land exceeded 10%,and the irrigated land disappeared completely.(2)Many human activities,including ecological restoration projects,building repairs and the laying of traffic piers,have forced a certain type of landscape away from others.As a result,the landscape pattern appears a trend of fragmentation,which splits the relationship between different types of landscape.2)Based on the principles of the index,and the ecological reality of the Qinwangchuan National Wetland Park,using the Pres-state-Response(PSR)model,to establish a total target,target level,guideline level,four levels of the four levels of the four levels of the four levels of the four levels of the ecological health evaluation index of the national wetland park.3)In this paper,that health condition of the ecological system in Qinwangchuan National Wetland Park was evaluate and analyzed with Analytic Hierarchy Process(AHP)and Fuzzy Comprehensive Evaluation(FCE),which shows that:(1)The evaluation results of each index are generally better.(2)The Qinwangchuan National Wetland Park is facing less pressure,but as a result of the ecosystem respond to pressure in a certain time lag,so still need to be alert to human activities on its adverse impact on the ecosystem.(3)The ecological system of the Qinwangchuan National Wetland Park has strong vitality,reasonable structure and strong ecological elasticity.Although the ecological function is damaged to a certain extent,it can still maintain a stable and healthy ecological state.(4)The Qinwangchuan National Wetland Park has a strong ecological resilience.After being affected badly,it is able to adjust itself and return to its original state.And the increased awareness of the wetland,the government’s support for the development of the Qinwangchuan National Wetland Park,and the scientific management of the park has played a very positive role in the development of the park.