北京城郊居民对京津生态工程的支付意愿

采用二分选择式条件估值法，对北京市居民就京津风沙源治理工程生态服务的支付意愿及其城郊居民的支付差异进行了研究。主要结论为：支付意愿均值5 a内每月每户为17.35~39.92元，占家庭月收入均值的0.30%~0.68%；工程受益方的总支付意愿现值低于工程总成本现值；影响“参与支付”决策的主要因素为年龄、收入和受教育水平，其中，收入和受教育水平对远郊城区居民的影响更为显著；影响“支付水平”决策的主要因素为收入和家庭人口；远郊城区居民的平均支付水平虽然低于中心城区居民，但城、郊居民支付水平占其家庭收入的比例接近。

Willingness to Pay of Urban and Suburban Households in Beijing for an Ecological Project in the Surrounding Areas

Contingent valuation method with dichotomous choice elicitation questions was used to estimate the willingness to pay (WTP) of urban and suburban residents in Beijing to the improved ecological services provided by the Beijing and Tianjin Sandstorm Source Control Project (BTSSCP). The results are that the mean WTP of residents in Beijing was 17.35-39.92 yuan RMB per household per month in 5 years; the total WTP of the benefited residents was less than the cost of the project; age, income and education level were the key factors affecting the respondents’ decision that whether they participated in the market, among which income and education level were more significant to affect suburban residents’participation decision. WTP was significantly related with the residents’income and household size. Although there was a difference of WTP between urban and suburban residents, the proportions of residents’ WTP in their income was similar, i.e. 0.28%-0.70% and 0.36%-0.65% respectively.