Analysis On Ecological Vulnerability Of Hengshui Lake Wetland And Its Protection And Utilization

Lake wetland is a unique ecosystem with a variety of structure and function,and plays an important role in maintenance of species diversity,water conservation,climate regulation,purifying environment,distributing flood,biodiversity protection and other aspects.But lake wetland is also a fragile ecosystem,which is easily disturbed by human activities.With the development of society and economy,people pay more attention to the short-term benefits in the development and utilization of lakes and wetlands,and seldom consider the sustainable development of the lake wetland.The area of lake wetland is shrinking in the development and utilization;water quality is deteriorating;function is weakening;biodiversity is reducing.The wetland ecosystem has been greatly damaged,showing obvious ecological fragile characteristics,and plays a serious impediment in the coordinated development of social economy in the lakes and wetlands surrounding areas.The ecological vulnerability of wetland were analyzed and evaluated according to the development trend of wetland ecological vulnerability,to guide the ecological restoration of lake wetland,to maintain the integrity of lake wetland ecosystem,and to ensure normal operation of the structure and function of the lake wetland.Hengshui Lake wetland is located in the warm temperate continental climate,a typical monsoon climate,with significant differences in dry and wet,cold and warm.Hengshui Lake possesses water,beaches,marshes,meadows and other different wetland environment,which has biological diversity.But Hengshui Lake which relies on the artificial water replenishment and has ecological vulnerability,is the natural laboratory carrying out the inland wetland ecosystem degradation and restoration.Taken the ecological system of Hengshui Lake wetland as the research object,the thesis analyzes the structure and functions of the ecosystem of Hengshui Lake wetland,and assesses the ecological vulnerability of Hengshui Lake wetland according to the vulnerability evaluation theory in wetland.Conclusions are as follows:(1)Based on the basic data of Hengshui Lake wetland,the thesis established the ecological vulnerability evaluation system of Hengshui Lake wetland,from the social environment,integrated function,and ecological characteristics.Then scores were given and calculated by formula.The results showed that the Hengshui Lake Wetland Ecosystem of vulnerability was moderate.(2)In external factors of Hengshui Lake wetland ecological vulnerability,human activities are the main factors that affect the development of Hengshui Lake wetland.(3)The improvement of the ecological vulnerability of Hengshui Lake wetland is closely related to the establishment of the Hengshui Lake Wetland Nature Reserve and the implementation of the management and protection policy of the wetland.(4)In the face of the ecological vulnerability of Hengshui Lake wetland,to realize the sustainable development of Hengshui Lake wetland,it should increase the water quality and water quantity,establish and improve the ecological compensation mechanism,maintain coordinated development between nature reserve and community development,coordinate the relationship between the economic development with environment protection and intensify scientific protection.