Evaluation Of Ecosystem Services Based On Landuse Change Scenarios In Wuyishan City

Evaluation of ecosystem services is basis of reasonable and effective natural resources, using ecological environment protection and sustainable development.Meanwhile, it is also the theoretical basis of ecological compensation accounting and integrated management. In this study, the services are assessed quantitatively,including food supply, water yeild, water purification, soil retention, carbon sequestration oxygen release, climate regulation, tourism recreation and ecological heritage, by maket value method, recovering cost method, opportunity cost method,contingent valuation method, et.al. Secondly, within the CLUE-S model and InVEST model, the spatial and temporal distribution of water supply, water purification and soil retention services in Wuyishan city between 2015 and 2030 are showed:(1) In 2015, the total value of ecosystem services in Wuyishan is 46.83 billion yuan. Among them, the value of food supply is 4.02 billion yuan, water yeild is 7.81 billion yuan, water purification is 348 million yuan, soil retention is 15.47 billion yuan,carbon sequestration oxygen releaseis 2.43 billion yuan, climate regulatio is 865 million yuan, ecological heritage is 19 million yuan, tourist recreation is 15.88 billion yuan.(2) Under the baseline scenario in 2030,the area of grassland, cropland,plantation, wetland and barren decrease, while the area of forest, urban increase. Under the planning scenario in 2030, the area of grassland, urban, wetland and barren decrease,while the area of forest,cropland,palntation increase. Under the ecology scenario, the area of cropland, plantation, urban and barren decrease, while the area of forest, grassland,wetland increase.(3) Under the baseline scenario, the total amount of water yeild is 4.14 billion ton,total nitrogen exportation is 1996.89 ton, total phosphorus exportation is 141.12 ton,soil retention is 78.24 million ton, the value of these services function are as follows:7.97 billion yuan, 3.54 billion yuan and 15.45 billion yuan.Under the planning scenario,the total amount of water yeild is 4.56 billion ton, total nitrogen exportation is 1767.76 ton, total phosphorus exportation is 131.58 ton, soil retention is 80.83 million ton, the value of these services function are as follows: 8.20 billionyuan, 3.59 billion yuan and 15.97 billion yuan. Under the ecology scenario, the total amount of water yeild is 4.49 billion ton, total nitrogen exportation is 1070.25 ton, total phosphorus exportation is 77.23 ton, soil retention is 82.94 million ton, the value of these services function are as follows: 8.65 billionyuan, 3.61 billion yuan and 16.38 billion yuan.Overall, the planning scenario not only increase the ecological land area, but also provides a sufficient amount of urban and agricultural land for the economic development of Wuyishan City.