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冰川冻土 ›› 2002, Vol. 24 ›› Issue (2): 160-167.doi: 10.7522/j.issn.1000-0240.2002.0028

• 冰冻圈与全球变化 • 上一篇    下一篇

恢复额济纳旗生态系统的总经济价值——条件估值非参数估计方法的应用

徐中民1,2, 张志强1, 苏志勇2, 程国栋1   

  1. 1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃兰州, 730000;
    2. 兰州大学干旱农业生态国家重点实验室, 甘肃兰州, 730000
  • 收稿日期:2001-08-30 修回日期:2001-12-28 出版日期:2002-04-25 发布日期:2012-04-26
  • 基金资助:
    中国科学院知识创新工程重大项目(KZCX09-04;KZCX-10-03);中国科学院寒区旱区环境与工程研究所知识创新工程项目(CACX210018)资助

Measuring Total Economic Value of Restoring Ejina Banner’s Ecosystem Services ──Application of the Non-Parametric Estimation

XU Zhong-min1,2, ZHANG Zhi-qiang1, SU Zhi-yong2, CHENG Guo-dong1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China;
    2. State Key Laboratory of Arid Agricultural Ecology, Lanzhou University, Lanzhou Gansu 730000, China
  • Received:2001-08-30 Revised:2001-12-28 Online:2002-04-25 Published:2012-04-26

摘要: 条件估值方法是当前国际上流行的衡量环境物品非利用经济价值的方法,通过调查居民针对不同环境状况变化的支付意愿,从而定量确定环境状况变化带来的经济效益和损失.针对黑河流域额济纳旗生态系统恶化的现状,以投标支付卡的方法设计了700份调查问卷,调查了黑河流域居民恢复额济纳旗生态系统的支付意愿,并采用非参数分析方法对结果进行分析.结果表明,用20a的时间将额济纳旗的生态系统恢复到20世纪80年代初的水平,黑河流域总共有92.3%的居民家庭存在支付意愿,有支付意愿家庭的平均支付意愿为每年每户43.39元,同时采用列联表检验的方法辨明了被调查者的年龄、学历、收入、户籍和居住的地理区域等因素对支付意愿的影响.最后在综合不同区域居民支付意愿差异的基础上,采用当前的市场利率将计算结果在时空尺度上加总,得到恢复黑河下游额济纳生态系统的总经济价值的现值为2.94×108元.

关键词: 条件估值法, 支付意愿, 生态系统恢复, 总经济价值, 非参数估计, 额济纳旗

Abstract: The contingent valuation method (CVM) is a direct interview approach that can provide an acceptable measure to estimate the economic value of preservation of natural resources. The estimates from the CVM may not be perfect now, however, the estimates from any other economic or physical science model are also imperfect. It is urgent to have an assessment of non-market benefits of restoring Ejina Banner’s ecosystem. In this paper, it is taken as a case to analyze the willingness to pay of restoring ecosystem service.Obtaining accurate benefit estimate from the CVM requires describing the resources in detail. In our survey, The reason why Ejina Banner ecosystem deteriorated and the means by which ecosystem services could be restoring are depicted in another paper. There are three elements in the actual valuation portion: (1) portrayal of the resources to be valued, (2) description of the particular mechanism to be used to pay for the resources, and (3) the question format used to elicit the respondent’s money amount of willingness to pay. Concerning over the influence of institutional and culture setting, payment card is adopted in the investigation. A non-parametric model is employed to estimate the welfare of restoring Ejina ecosystem. Result from 700 in-person interviews indicates that a household would pay ¥43.39 per year on the average, ¥47.59 for the households in the main Heihe River basin, and ¥33.30 for the rest. The aggregate benefit to residents in the main basin is ¥18.39×106 annually. Taking into account the market discount rate, the aggregate benefit of restoring Ejina Banner ecosystem is ¥29.4 ×106 for 20 years. This estimate suggests that the general public in the Heihe River basin would be willing to pay to restoring the Ejina Banner ecosystem. Finally, some suggests are put forward on how to apply the CVM in developing country. It is believed that the CVM may be able to apply more efficiently together with benefit-cost analysis.

Key words: contingent valuation method, willingness to pay, ecosystem restoring, total economic value, non-parametric estimation, Ejina Banner

中图分类号: 

  • F062.2