Ecosystem Service Value Assessment of World Natural Heritage Site:Evidence from Yancheng Yellow Sea Wetland
At present,China's wetland is facing land ownership issues,which has led to particularly high pressure on land use.Ecological protection and scientific management of ecosystems are two issues that restrict the development of wetlands.Based on the land use type data of the Yellow Sea Wetland World Natural Heritage Site in 1990,2000,2010,and 2020,the article uses the value core currency rate to optimize the impact of currency depreciation on value equiva-lents,and evaluates the ecosystem of the Yellow Sea Wetland World Natural Heritage Site.Serve.The results show that the cultivated land area of the Yellow Sea Wetland World Natural Heritage Site increased from 9 353 ha to 26 445 ha,and the grassland area decreased from 54 283 ha to 26 732 ha.The changes in other types were not obvious;The ecosystem service value continued to increase from 13.268 billion yuan to 49.627 billion yuan during 1990 to 2020;Hydrological regulation services account for 80%,and the average annual growth rate is 4.27%,which is the core function of the Yellow Sea Wetland World Natural Heritage Site.The research results are of great significance to regional ecological pro-tection.
world natural heritage sitesecosystem servicesland use classificationservice value assessment
万方数据
维普
