| Wetland is an important part of natural ecosystem.It plays an important role in conserving water sources,providing wetland resources such as wood,peat,fish and shrimp,and providing habitat for wild animals.In the context of the current global climate change,the increase of population,the promotion of urbanization and industrialization have exacerbated the interference of human activities on wetlands,resulting in the pressure of environmental pollution,system degradation and ecological destruction on wetland ecosystems,which has seriously damaged the stability and ecological function of wetlands.This paper takes Qianguo irrigation as the research area and Xinmiao as the research object.Using the methods of literature analysis,field investigation and ecology,this paper comprehensively analyzes the current situation and problems of wetland ecological environment in Qianguo irrigation area,and discusses the measures and suggestions for ecosystem protection,ecological restoration and rational utilization suitable for Xinmiao on the basis of sustainable theoretical knowledge.Research findings: It is found that there are some problems in the wetland of Qianguo irrigation area,such as water pollution,eutrophication,insufficient management level and so on.The main causes of these problems are the degradation of wetland ecological function,the input of external pollution and improper adaptive management.Among them,the water source of xinmiaobao wetland is supplied by surface runoff and rainfall.Agricultural activities lead to the residues of pesticides and chemical fertilizers in the backwater of the irrigation area,and the total phosphorus,total nitrogen and organic matter carried by it increase the self purification burden of the wetland.In addition,birds and livestock around the wetland will also produce excreta into the lake,and the domestic sewage generated by nearby residents and tourists will also be directly discharged into the lake,causing water pollution.In terms of management,there are some problems in the reserve,such as inadequate facilities,backward and aging management and protection equipment,lack of monitoring facilities and equipment,etc.In addition,the management of the reserve is not unified,and there is a serious shortage of managers and technicians.These problems limit the improvement of wetland management level.Combined with the research results,the following sustainable management strategies are proposed for the wetland ecosystem in Qianguo irrigation area.First of all,we should pay attention to water ecological environment restoration,ecological risk prevention and ecosystem adaptive management.Improving the water environment can be achieved by regulating farmland water retreat,controlling agricultural non-point sources,reducing livestock and poultry breeding,domestic sewage,garbage and other pollution.It can also be achieved by building projects such as wetland and grassland protection and restoration,water bank ecological protection and ecological isolation protection zone.To improve the management level,we should first strengthen the cooperation of all participating departments and strengthen the control ability.Secondly,we should improve the legal system of wetland protection and cultivate residents’ awareness of environmental protection. |