Ecosystem service value assessment for constructed wetlands: A case study in Hangzhou, China
Ecosystem service value assessment for constructed wetlands: A case study in Hangzhou, China
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DOI：
10.1016/j.ecolecon.2008.02.008
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发表时间：
2008-12
影响因子：
7
通讯作者：
Wu Yang;Jie Chang;Bin Xu;C. Peng;Y. Ge
中科院分区：
文献类型：
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作者：
Wu Yang;Jie Chang;Bin Xu;C. Peng;Y. Ge
在综合分析各种自然资源价值分类的基础上，总结了人工湿地生态系统治理富营养化水体的生态经济价值体系。以杭州植物园植物园为例，运用条件价值法（CVM）和影子项目法（SPA）对植物园植物园生态系统服务经济价值进行了估算。据CVM估计，CW在20年内的总经济价值为80万元（2007年8月，7.6元人民币=1美元）。同时，SPA计算出CW在20年内的总经济价值为2304万元。经确定，与CVM相比，SPA提供了杭州植物园CW的真实货币价值的更近似值。本研究填补了国内人工湿地生态系统服务功能评价的差距，为我国人工湿地生态系统服务功能评价提供了参考依据，为政策制定者促进我国人工湿地生态系统服务功能的发展提供参考。
Based on a comprehensive analysis of various classifications of natural resource values, we summarized an ecological economic value system of constructed wetland (CW) ecosystems for treating eutrophic water. Using the CW located at the Hangzhou Botanical Garden as an example, the contingent valuation method (CVM) and shadow project approach (SPA) were applied to estimate the economic values of CW system ecosystem services. The CVM estimated a value of 800,000 yuan (yuan: Chinese Currency, 7.6 yuan=1 USD as of August, 2007) as the total economic value of the CW in a twenty year period. Meanwhile, the SPA calculated a value of 23.04 million yuan as the total economic value of the CW in a twenty year period. It is determined that compared to the CVM, the SPA provides a more approximate value of the true monetary value of the Hangzhou Botanical Garden CW. This study could fill the gap of knowledge and provide a benchmark when evaluating constructed ecosystem services and help policy makers to promote the development of constructed wetlands in China.