The Value Assessment Of Wetland Ecosystem Service In Shandong Province

With the attention of the protection and sustainable development of ecological environmentand natural resources, research on wetland ecosystem has become a hot spot. The research ofservice function of wetland ecosystem has gradually become one of the frontier researches ofinternational wetlands. As the various types and vast areas, Shandong wetlands exist a variety ofimportant ecosystem service functions. The value assessment of service function of Shandongwetlands is the theoretical basis for the protection and rational development of Shandongwetlands resources, and the basis to ensure the sustainable development of wetlands resources.Based on the second survey data of wetland resources in Shandong Province, the wetlandecosystems of Shandong are classified into five categories: offshore and coastal wetland, lakewetland, river wetland and artificial wetland. This article focuses on the material productionfunction, ecological function and social service function of the five types of wetland ecosystemsto assess the ecosystem services value.In the process of wetland evaluation, the key of service evaluation is locating the leadingservice functions of all kinds of wetland ecosystems，and selecting the methods of valueassessment of each services. In this paper, based on the analysis on the three categories ofwetland service functions in Shandong Province, the functions of production, water resourcessupply, flood regulation, purifying, air conditioning, wave dissipation and storm weathering,habitat, scientific research and tourism were assessed one by one. This paper analyzed andevaluated the service function value of wetland ecosystems in Shandong by ecology, economics,resources, which mainly adopted the ecological and environmental economics methods and thedomestic and foreign research results, such as the market value method, shadow engineeringmethod, carbon tax method, afforested cost method, cost method, contingent value method,substitution method and travel cost method. The results show that: the total service value ofwetland ecosystems in Shandong province is102.844billion yuan per year, including31.24billion yuan about the total value of material production of wetlands,7.691billion yuan forproviding the total value of water resources,3.926billion yuan about the value water regulating,6.656billion yuan about the value of atmosphere regulating,6.487billion yuan about wave dissipation and storm weathering,28.331billion yuan for the purification of wetland,2.584billion yuan for the habitat function, about5.233billion yuan for the cultural function, about10.696billion yuan for the tourism and leisure function. The analysis results show that: thelargest ecological service value which can not be ignored for the ecological, social and economicdevelopment of Shandong Province, is the offshore and coastal wetland ecological system, whichtotal value is44.871billion yuan, accounting for the total value of43.63%of Shandong Province;Production function, which value was accounted for30.38%of the total value of ecosystemservice function of wetland, is the largest among the Shandong Province nine major materialwetlands function; Purification function, accounting for27.55%of the total value, ranked second;The total value of natural wetlands in Shandong province, accounting for70%of ecosystemservice function value in Shandong Province, is71.982billion yuan, which unit area value is upto60400yuan per hm2, much higher than that of artificial wetland,54200yuan per hm2. Finally,according to the results of this paper and the current situation of protection and utilization ofShandong wetland, some corresponding suggestions and protection measures were put forward.