Abstract: Through the evaluation of the gains and losses of the key functions of regional ecological system under different management modes, various ecosystems functions and their spatial distribution patterns in Wanquan Town were analyzed. Based on different development needs, various scenarios were established and weighed. In 2009, the support function value supplied by the ecosystems in the Town was 58 million RMB, among which, oxygen release function ranked first (37 million RMB), and the regulation function value provided by the ecosystems was 1238 million RMB, among which, climate regulation ranked first (1127 million RMB). The total ecosystem services value was 1297 million RMB, being 1.46 times of the local GDP (888 million RMB) in the same year. Compared with that in 2002, the service function value of the ecosystems declined in 2009, with the largest decrements in climate regulation and water yield. Under policy scenario and protection scenario, the variation trends of the values of various ecosystems functions were basically the same. Except that the values of the functions oxygen release and nutrient cycling decreased, the values of the others increased obviously. Under protection scenario, the total ecosystem services value had a higher increment than that under policy scenario, especially for the water yield and carbon sequestration functions. It was suggested that protection scenario could be the optimal land use management mode for the socio-economic sustainable development of the Town.