Evaluation And Analysis Of Wuliangsuhai Wetland Value And Economic Loss Caused By Water Pollution

Based on the grass type lakes wetland resources'character, the economics theory and method is applied in the paper on the base of the investigation and experiment to analyses the asset value type of the wetland resources and to evaluate the values in Wuliangsuhai lake wetland. Researching value, travel consumption method , Robert Constanza method, market value method, assets value method,Contingent Valuation Method. The conclusion can be drawn that the total assets value of the Wuliangsuhai lake wetland is RMB 2.824 billion yuan (US$0.352 million). The direct use value is RMB 253.58 million yuan (US$31.69 million). The indirect use value is RMB 819.60 million yuan (US$102.44 million). The current non-use value is RMB 1.75 billion yuan (US$0.22 billion).The paper evaluates the present situation of water environment quality in Wuliangsuhai lake and gains its level of the water quality though investigation, monitoring and analysis in from 2003 to 2005 and using of the Logistic Curve model. The result shows that the level of the water quality in Wuliangsuhai Lake has been close to the fifth level from 2003 to 2005. Based on the grass type lakes character and economic loss rate of water due to pollution, the damage extent of utilizing functions of water in Wuliangsuhai Lake is assessed though investigation, monitoring and analysis from 2003 to 2005. Results show that water in Wuliangsuhai Lake has not been suitable for serving as a water source for drinking and swimming (function destroyed). As a sort of water used for fishing and recreation, not for drinking, water in the lake has also been affected by pollution (moderately damaged, seriously damaged in 2003). But as a sort of water used for residential environment, it is meliorating (seriously damaged→moderately damaged→slightly damaged). Its comprehensive damage extent is serious. It calculates recreational and fishing loss by economic loss rate of water due to pollution in 2005. It gains civicism project and water pollution recovery investment, water pollution accident loss by investigating and interviewing from Wulateqianqi bureau of water conservancy, environment protect bureau and so on. The...