Evaluation On The Value Of Wetland Ecosystem Services At Zhangjiangkou Of Fujian Province

Wetland ecosystem service is nature environmental effect which formulated in the patterns and process of wetland ecology and maintained the survival of human being. Evaluating the value of wetland ecosystem services has played an important role in enhancing and strengthening the status of wetland in the economic society development.In this paper, we first formulated the value methods of wetland ecosystem services and used them to study the function systematically and built function’s value framework of Zhangjiangkou Mangrove Wetland National Reserve, Fujian Province. Finally, the function was evaluated qualitatively and quantitatively and the results were as follows.First of all, the ecosystem service is divided into four specific sub-functions. Number one is supplying service which includes resources of available plant, litter and fishery. Number two is cultural service which includes research-education and eco-tourism. Number three is regulating service which includes carbon fixation and oxygen release, soil keeping, improving environment quality and anti-wave and protecting the embankment. Number four is supporting service which includes nutrient substance accumulation and biodiversity conservation.The total value of wetland ecosystem services is divided into use value and non-use value after value category analysis. What’s more, the use value is consisted of direct use value and indirect use value, which reflects the function of supplying service and cultural service. And the non use value reflects the function of regulating service and supporting service.The total value of wetland ecosystem services of Zhangjiangkou is about214.202,5million yuan/a, which means about91,000yuan/hm2. The value is generally higher than other ecosystem. Among it, the indirect use value (145.095,6million yuan/a) is about2.1times more than direct use value (69.106,9million yuan/a), which means regulating services and supporting services should arouse people’s attention.All kinds of ecosystem services in the wetland are arrange from higher to lowers as follows. The value of nutrient substance accumulation function is69.077,6million yuan/a, which account for32.25%of the entile; the value of biodiversity conservation,61.2million yuan/a,28.57%; the value of fishery resources,45million yuan/a,21.01%; the value of research and education,140.749million yuan/a,6.57%; the value of eco-tourism,9.170,2million yuan/a,4.28%; the value of anti-wave and protect the embankment,5.3million yuan/a,2.47%; the value of carbon fixation and oxygen release,4.931,7million yuan/a,2.30%; the value of soil keeping,4.568,6million yuan/a, 2.13%; the value of litter, available plant resources, improving environment quality is0.879,5million yuan/a.The value of nutrient substance accumulation and biodiversity conservation is approximately accounted for60%of total value. It illustrated that the measure that adopted by the MNR reserve officials is effective and has significance to maintain biodiversity.