上海河岸带公众偏好及生态系统服务价值评估

针对上海地区河岸带的环境质量提升情况,基于条件价值法(CVM)研究上海市居民对河岸带的偏好、支付意愿及生态系统服务价值,并通过SPSS软件考察影响受访者支付意愿率的主要因素。得到以下结论:①受访者对上海地区河岸带满意度与其使用河岸带频率呈显著相关性(p=0.001),表明受访者与河岸带的亲疏关系主要取决于其利用河岸带的实际频率。②使用五点评价法对河岸带状况进行分析,亲水性指标得分2.94,水质指标得分3.51,分别为受访者对河岸带最满意与最不满意要素。③针对河岸带10项评价要素进行因子分析,可将受访者对河岸带的满意度因子归纳为河岸带的自然属性和社会属性,且后者的影响权重更大。④受访者对树草结合、人行道位于绿化间且护岸保留湿地的河岸带布局的评价结果得分1 199,为最高得分,表明受访者偏好该类河岸带布局。⑤投标金额在一系列影响支付意愿率因子中,显著性p=0.000,影响最为剧烈。⑥受访者的支付意愿为537.6元/(年.户),整个生态系统的估算价值为2.74亿元/年。

Public Preferences for Shanghai Riparian Zone and Evaluation of Its Ecosystem Service Value

In this paper,it takes the environmental quality improvement of riparian zone in Shanghai as a case study,and tries to find out public preferences,willingness to pay(WTP) and the ecosystem service value by the contingent valuation method(CVM),and then investigates the main factors affecting WTP by SPSS.The result can be concluded as follows: Because the correlation between public preferences for Shanghai riparian zone and using frequency is significant(p=0.001),so the relationship between interviewees and riparian zone depends mainly on the riparian using frequency.Using the method of five points to evaluate the riparian zone,closeness to water and water quality are respectively 2.94 and 3.51,which are the main factors respectively satisfying and dissatisfying interviewees.Using factor analysis to evaluate the ten factors of riparian zone elements,it can be concluded that the two basic factors,that affect satisfaction are natural and social factors,and the latter affects more.The score of the preferred layout,which combines greening with grass and trees,the pavement in between and with flood prevention wall is 1 199,which means the best public choice preferred by the interviewees.The bid which is the significant factor(p=0.000) influences the rate of WTP most fiercely.WTP is 537.6 yuan /(year·household) and the ecosystem service value is 0.274 billion yuan / year.