Evaluation on non-use values of typical lake wetlands in Wuhan Evaluation of non-use value of ecotourism resources: a case study in Dalai Lake protected area of China The assessment of non-market value of agricultural land resource in Wuhan Improving validity and reliability of contingent valuation method through reducing biases and errors: theory, method and application Measuring recreational value and existence value of agricultural land in Shiliuhong leisure farm in Wuhan Contingent valuation of the existent economic of Giant Panda (Ailuropoda melanoleuca) Testing reliability of the contigent valuation method:a case study on the tourism attraction non-use value Using CVM to estimate the restoring cost of Maqu grassland nfluencing factors analysis of willingness to pay for ecosystem services evaluation of Hongze Lake Research progress of contingent valuation method for application to agricultural ecological compensation Spatial differentiation research of non-use value WTP based on the residents’ecological cognition:taking the sanjiang plain as a case