[目的]评估天津市七里海湿地的价值.[方法]将七里海湿地价值分为使用价值和非使用价值,运用市场价值法、旅行费用法、影子工程法等方法对七里海湿地使用价值的各组成部分进行了评估；运用意愿调查法来估算七里海湿地的非使用价值.[结果]七里海湿地总价值为18.92亿元,其中,直接使用价值为该区动植物产品价值、旅游价值和科研文化价值之和,为5.39亿元(占28％)；间接使用价值为该区水文学功能价值、水质功能价值、侵蚀控制功能价值、固定CO2价值和栖息地功能价值之和,为9.65亿元(占51％)；非使用价值为3.88亿元(占21％).从效益角度来看,七里海湿地生态效益最大,占72％；经济效益居中,占19％；而社会效益最小,仅占9％.[结论]该评价结果为七里海湿地的有效保护和可持续利用提供了科学依据.%[ Objective] Tlie study aimed at assessing the whole value of Qilihai Wetland in Tianjin City [ Method] In this study, the whole value of-Qilihai Wetland was divided into two parts, namely use value and non-use value. The use value of Qilihai Wetland was estimated by market value, travel cost, shadow project method and so forth, and the non-use value of Qilihai Wetland was assessed by contingent valuation method. [Result] The total value of Qilihai Wetland reached 1.892 billion yuan, wherein the direct use value, including animal and plant products, tourism, scientific and cultural value, was 0.539 billion yuan, accounting for 28% of total value; the indirect use value, composed of functional values in hydrology, water qniality, erosion control, CO2 fixation and habitat, was up to 0.965 billion yuan, making up 51% ; the non-use value totaled0.388 billion yuan, taking up 21%. In addition, the ecological benefit of Qilihai Wetland was (he maximum, accounting for 72% of total benefit, followed by economic benefit (21%), while the social benefit was the minimum (9%). [Conclusion] The results can provide scientific references for the effective conservation and sustainable utilization of Qilihai Wfitiand.
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