Estimation of Ecosystem Service Value in Miyun Reservoir and Wetland of Beijing Based on Multi-Source Data

Based on the remote sensing data and the related investigation statistical data, The article took Beijing Miyun Reservoir and wetland as the object of study, extracted the information of Miyun Reservoir and wetland, classified ecosystem service function from 1987 to 2008, calculated the monetary direct, indirect use and non-use value of Miyun Reservoir wetland ecosystem service function based on the methods of market value law, shadow project law, travel allowance usage, condition value law and so on. The result indicated that referencing other researches' value per unit water area of different ecosystem service function and the wetlands area from remote sensing interpreting, the estimation value of Reservoir wetland ecosystem service from 1987 to 2008 were respectively 29.42 million yuan of 1987，3.576 million yuan of 1992, 37.22 million yuan of 1998, 15.84 million yuan of 2003, 39.58 million yuan of 2008；And the adjustment and support service value were much higher than the supply and cultural service value. The main function of Miyun reservoir and wetland was the adjustment and supply water. Otherwise, combined remote sensing data with statistic data and water resource bulletin of Beijing, the water supply function value in direct service value was always the highest, the water regulation function value in indirect service value was the second role. All the research could help the local government make the decision of in managing and developing Miyun Reservoir and wetland ecosystem.