ECOSYSTEM SERVICE VALUATION ON NONUSE VALUE FOR THE CONSTRUCTED WETLAND IN BEIJING OLYMPIC FOREST PARK

This paper introduced the main circumstances about the constructed wetland in Beijing Olympic Forest Park(BOFD),and discussed what ecosystem service it possesses,in order to obtain comprehensive value and raise public understanding on it.It is indicated that it's very important to evaluate ecosystem service nonuse value for BOFP constructed wetland including landscape viewing,entertainment and scientific research and education.Contingent Valuation Method(CVM) was adopted to evaluate the ecosystem service nonuse value for the constructed wetland.After designing relative questionnaires,carrying out prior survey,survey,and analyzing the output,it shows that the mean WTP(willingness to pay) for the BOFP constructed wetland's ecosystem service nonuse value was 160.23 Chinese Yuan/(household·a).Three Multi-Regression analysis methods namely Enter Regression,Step Regression and Step Regression with some variables after logarithm transformation were carried out,which established a good model to confirm that people who have more WTP are more likely to be those who learn more about constructed wetland,have better salaries and have gained better education.By choosing proper context population coming from Beijing city,the total WTP of the BOFP constructed wetland in the following 20 years was acquired as 123.3656 million Chinese Yuan/a and the total Net Present Value were 1890.4297,1614.2785 and 1398.4225 million Chinese Yuan at discount rate of 3%,5% and 7% respectively.