Spatial differentiation research of non-use value WTP based on the residents’ecological cognition:taking the sanjiang plain as a case Evaluation of non-use value of ecotourism resources: a case study in Dalai Lake protected area of China Applications of contingent valuation method in evaluation of non-market values Evaluating the non-use value of sanjiang wetland based on contigent valuation method Valuation on Non-use Values of Zhalong Wetlands Evaluation on non-use values of typical lake wetlands in Wuhan A novel cognitive-based approach to motivation for non-use value Evaluation on service value of ecosystem of Peri-urban transition zone lake: a case study of Yandong Lake in Wuhan City