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Abstract [Objective] The 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 quality, erosion control, C02 fixation and habitats, was up to 0.965 billion yuan, making up 51%; the non-use value totaled 0.388 billion yuan , taking up 21 % . In addition , the ecological benefit of Qilihai Wetland was the 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 Wetland.
Key words Qilihai Wetland; Value assessment; Use value; Non-use value; China
Qilihai Wetland (39°16' -39°24' N,117°26'30" -117°37' 18" E) , a part of the core region of Tianjin Old Coast and Wetland National Nature Reserve approved by the State Council in 1992, is located in Ninghe County in the northeast of Tianjin City, at a distance of 130 km to Beijing, 40 km to Tianjin and 15 km to the Bohai Sea; its area totals 9 500 hm2, wherein the core region has an area of 4 800 hm2 , and the area of the buffer zone is 4 700 hm2. Qilihai Wetland is divided into east sea and west sea by new Chaobai River flowing from the north to the south. There are reservoirs and reed field in the east sea, with an area of 1 600 hm2 ; large areas of reed distribute in the west sea , with an area of 3 200 hm2 .
Wetland value can be grouped into use and non-use value[1] . Use value is composed of direct and...