Influencing Factors of the Willingness to Pay for Non-Use Value Evaluation of Sanjiang Wetland

Wetland is a kind of important ecosystem on the earth.To better protect wetland ecosystems,Contingent Valuation Method(CVM),a worldwide popular method for evaluating the economic value of ecosystems was applied to evaluate the non-use value of Sanjiang Plain wetland.A questionnaire of payment card CVM was developed for the survey study.We sent out the questionnaires to 552 respondents,and received 513 usable responses.Data analysis reveals that the willingness to pay of Sanjiang Plain wetland is RMB 71.66 per year.The result of descriptive analysis shows the distribution of willingness to pay and its variation patterns under the influence of each factor.The influencing factors are refined using principal component analysis.With ordered category Logit model,three factors are identified to be the most important among all that influence the willingness to pay for non-use value evaluation of Sanjiang wetland,individual average annual income,educational background and the attitude of environment protect.This study makes it possible to compare the revenue of Development and protection of Sanjiang Plain wetland,and provides a theoretical foundation to make related policies for the government.