%0 Journal Article
%T Study on the ecosystem services value of urban river using contingent valuation method and bias analysis of the results<br>城市河流生态系统服务的CVM估值及其偏差分析
%A YANG Kai
%A ZHAO Jun
%A <br>杨凯
%A 赵军
%J 生态学报
%D 2005
%I 
%X Rivers in urban area are characterized themselves by special landscape ecological function, and can provide with important ecosystem services. For this reason, this paper discusses mainly the nature and value of the services, and in order to probe into this, a case study on the comprehensive management project of Zhangjiabang Creek, Shanghai using Contingent valuation method (CVM) is conducted, where 640 Dichotomous Choice questionnaires have been sent out with 507 fed back. In the case study, the values of Willingness to Pay (WTP) and the total economic value of the ecosystem services of the urban river Zhangjiabang Creek have been surveyed. Meanwhile, relative problems of the Contingent valuation method such as design and survey techniques of the questionnaires, bias analysis, reliability and validity test of the results have also been approached. It shows that: (1)The mean value of WTP to the ecosystem services of the urban river Zhangjiabang Creek is RMB $107.42 per household per month (RMB $1289.08 per household annually), and the total economic value of the ecosystem services is RMB Rivers in urban area are characterized themselves by special landscape ecological function, and can provide with important ecosystem services. For this reason, this paper discusses mainly the nature and value of the services, and in order to probe into this, a case study on the comprehensive management project of Zhangjiabang Creek, Shanghai using Contingent valuation method (CVM) is conducted, where 640 Dichotomous Choice questionnaires have been sent out with 507 fed back. In the case study, the values of Willingness to Pay (WTP) and the total economic value of the ecosystem services of the urban river Zhangjiabang Creek have been surveyed. Meanwhile, relative problems of the Contingent valuation method such as design and survey techniques of the questionnaires, bias analysis, reliability and validity test of the results have also been approached. It shows that: (1)The mean value of WTP to the ecosystem services of the urban river Zhangjiabang Creek is RMB $107.42 per household per month (RMB $1289.08 per household annually), and the total economic value of the ecosystem services is RMB $0.634 billion every year in the forthcoming 3 years. Due to disparities of the economic level, comparatively, the results are close to the findings of overseas cases in the order of magnitude while obviously higher than that of the domestic. (2)The bid vector designed in the Dichotomous Choice CVM study has well defined the range and distribution of the respondents' WTP, which makes the statistical efficiency of the mean value of the WTP relatively higher than expected. While some biases, such as starting-point, hypothetical, strategic, payment vehicle, information and yea-saying bias are basically under control in the design and survey procedure of this study. (3)Socio-economic variables of the respondents such as income, education degree, donation experience and environmenta
%K ecosystem services
%K contingent valuation method
%K Willingness to Pay
%K bias analysis
%K Zhangjiabang Creek<br>生态系统服务
%K 条件价值评估法
%K 支付意愿
%K 偏差分析
%K 浦东张家浜
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=DF32C8602F31EC36&yid=2DD7160C83D0ACED&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=A5545D8D349C0F70&eid=D3EC5D34434DACC5&journal_id=1000-0933&journal_name=生态学报&referenced_num=25&reference_num=34