Ecosystem analysis and service value evaluation of land use—A case study from Baigezhuang Village in Pinggu County, Beijing City

Taking Baigezhuang Village in Pinggu County, Beijing City as an example, the types and characteristics of land use ecosystem in 2002 were analyzed and the ecosystem service values including food production, CO₂ fixation, O₂ release, water circulation, residues treatment and recreation were calculated. The results show that the total value of ecosystem services is 17.0662 million yuan RMB, and approximately equals the total earning of village economy. The service value of CO₂ fixation is the biggest, accounting for 72.57％， and the next is the serv ice value of O₂ release, accounting for 15.30％. The service value of food pr oduction only accounts for 12.77％ of the total service value. The service values of water supply and recreation are very small,and the service value of waste treatment is negative.