Abstract: Based on remote sensing satellite monitoring and sample investigation methods,wetland resources in Menyuan County of Qinghai Province in 2014 was studied;On this basis,direct market value approach and surrogate market approach were adopted to assess the service-function values of wetland ecosystem in Menyuan county in 2014.The results indicate that the total area of wetlands in Menyuan county is about 14 754.01 hm²,of which 97.77 percent is natural-wetland,2.23 percent is artificial-wetland and divided into 4 classes,6 types.Wetland composition proportion decreasingly ranks as river wetland,swamp wetland,artificial wetland and lake wetland.Meanwhile,the results also indicate that the service-function values of wetland ecosystem in Menyuan county in 2014 has achieved 1437.529 669 million yuan RMB,among that supply function value is 404.666 790 millipn yuan RMB,regulating function value is 455.711 976 million yuan RMB,cultural function value is 141.468 087 million yuan RMB,support function value is 435.682 817 million yuan RMB.Apparently the service-function value composition proportion decreasingly ranks as regulating function,support function,supply function,and cultural function.

Key words: wetland ecosystem, service function, value assessment, Menyuan County