The Impact Factor Analysis Of Wetland Ecosystem Service By Structural Equation Model

Wetland is one of the three major ecosystems in the world.It provides a variety of ecosystem services for the survival and development of human beings.Human beings are able to satisfy and improve their own well-being through the consumption of ecosystem services.In recent years,the unreasonable exploitation and utilization of wetlands by humans has led to the degradation of wetland ecosystem services and endangered human survival and safety.Based on the framework of the Millennium Ecosystem Assessment of the United Nations and related scholars' research,this paper has constructed a wetland ecosystem service and driving forces model,wetland ecosystem service and human well-being structural equation model.The structural equation model was evaluated and revised through analysis of the survey data of residents in the Beijing-Tianjin-Hebei region.On this basis,the significant factors affecting the service of wetland ecosystems and their impact paths were explored.Based on the path analysis,suggestions were made to improve the service of wetland ecosystems in order to improve human well-being.Research shows that the internal driving force has a positive impact on wetland ecosystem service.Among them,wetland health mainly affects supply and support service and regulation service,and wetland structure mainly affects supply and support service and cultural service.The impact of wetland health on ecosystem service is higher than that of wetland structure.The health status of wetlands is affected by the combined effects of wetland area,water quality,vegetation coverage,and biodiversity.External driving forces have a negative impact on the service of wetland ecosystems.Human activities have a relatively high degree of influence on supply and support service,regulation service and cultural service.The forms of human activity disturbances are mainly land reclamation,infirastructure construction,large-scale irrigation and water diversion,deforestation,overfishing of wild resources,and discharge of pollutants.Overall,the impact of external driving forces on wetland ecosystem service is greater than that of internal driving forces.Based on the influencing factors of wetland ecosystem service,the following countermeasures are proposed:First,strengthen the monitoring of wetland health and protect wetland ecosystem health;Second,promote new agricultural production technologies to protect wetland area and water quality;Third,control over-fishing of wild resources and rationally develop and utilize wetland resources;Fourth,control unreasonable human activities and strengthen the guidance of economic measures;Fifth,we should carry out the restoration and construction of wetlands and promote regional coordinated management in the Beijing-Tianjin-Hebei region.