基于CVM的太湖湿地生态功能恢复居民支付能力与支付意愿相关研究  

CVM for Taihu Lake based on ecological functions of wetlands restoration,and ability to pay and willingness to pay studies

作　　者：于文金 谢剑[2] 邹欣庆[3] 

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室,南京210044 [2]世界银行,美国纽约20433 [3]南京大学海岸与海岛开发教育部重点实验室,南京210093

出　　处：《生态学报》2011年第23期7271-7278,共8页Acta Ecologica Sinica

基　　金：世界银行"无锡太湖沿湖地区生态环境综合治理"项目;"973"国家科技支撑项目(2008BAK50B02);国家自然科学基金资助项目(10672052);淮河流域气象开放研究基金(HRM200802);河海灾害实验室开放基金项目(20090024)

摘　　要：采用意愿调查价值评估法(CVM)法定量评估湿地生态功能修复保护非使用价值,力图探讨支付能力与支付意愿的相关机理。研究结果显示:(1)支付意愿调研综合置信度为2.652,处于可信程度较高的范畴,3个调研区的集中度均呈现不规则偏正态分布,WTP中位数与平均数重现性良好,中支付区域集中度达86%,符合经济学原理,说明WTP结果可信度较高。(2)公务员、教师、律师、高薪企业工人、部分高收入农民、军人支付意愿较高,两者的相关性高达0.937以上。(3)按CVM法计算,当地居民对世行工程的平均支付意愿为户均支付19.19元/月,产生区域支付差异的原因主要在于不同区域随机被访者职业构成和收入构成存在差异。(4)在估算湿地生态功能恢复项目支付意愿时CVM法是可靠的基本方法,支付能力是支付意愿的重要制约因素,中等支付能力者支付金额最高,支付能力与支付意愿之间存在不仅仅是正相关而是复杂的关联性。Lake wetlands are important natural ecosystemswith ecological functions and biodiversity. The Contingent Valuation Method （ CVM）, which is useful for assessing the value of non-market resources, has been used for quantitative assessment of the non-use value of restoring ecological functions of wetlands, and to explore the ability to pay and willingness to pay （WTP） mechanisms. The following results are shown： （1） the confidence level from the comprehensive survey of WTP is 2. 652, which demonstrates high credibility ; while the distribution obtained is an irregular partial normal distribution, the WTP median and mean are shown to be reproducible, and regional concentration of payment at 86% is consistent with economic principles, indicating high credibility with regard to WTP ; （2） social and economic characteristics of the data, such as age, income, wetland identification, and consumption, have good correspondence with WTP （for example, civil servants, teachers, lawyers, high-paying corporate workers, some high-income farmers, and soldiers have a higher WTP with a correlation of greater than 0. 937） ; （3） calculated by CVM, the WTP of the average household for the World Bank project is 19.19 yuan per month; the survey results show that the local population is willing to pay to restore ecological functions of the wetlands, and differences in the WTP amount are mainly due to occupation and regional income; （4） the CVM method is useful for estimating the ecological function of wetlands restoration projects. Ability to pay is an important constraint on WTP, and is assumed greater than the respondents WTP. The study found that those with secondary- income are willing to pay the maximum amount, while some of the high-income groups with full capacity to pay had a low WTP, reflecting the level of environmental awareness and education. It is proved that WTP capacity is not only a positive correlation between the rather complex relevance. The order of the regions according to WTP, from high t

关 键 词：太湖 湿地 CVM 支付意愿 

分 类 号：X37[环境科学与工程—环境工程] X196