基于双栏模型的三江平原湿地生态保护价值评估

敖长林, 董育宁, 焦扬, 张昆, 董利娜

Ecological value evaluation of the Sanjiang Plain Wetland based on the Double-Hurdle Model

AO Changlin,DONG Yuning,JIAO Yang,ZHANG Kun,DONG Lina

表1 WTP观察值分类结果

Table 1 Classification of observations

分类结果 支付状态 参与状态 观察值 YY Yi*≥T U Di>0 Yi=Yi* YN T U> Yi*≥T Di>0 Yi=Yi* NY T> Yi*≥T L Di>0 Yi=Yi* NN T L> Yi*>0 Di>0 Yi=Yi* 真实零 Yi*≤0 Di>0 Yi=0 抗议性零 - Di≤0 Yi=0