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首页> 外文期刊>Journal of Environmental Protection >The Combined Application of WTP and WTA in Contingent Valuation Methods
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The Combined Application of WTP and WTA in Contingent Valuation Methods

机译：WTP和WTA在权变评估方法中的组合应用

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The In most contingent valuation (CV) studies, WTP (Willingness to pay) and WTA (Willingness to accept) were often used separately, so protesting or no response or even babbling answers are increasing, and the debate persists over the reliability of CV in economic policy analysis. In order to improve the reliability of CV, WTP and WTA is used syn-chronously to estimate the restoration cost of Maqu grassland ecosystem. Data were partly from questionnaire survey, and partly from interviews and authorities. Before conclusions were derived, we assumed these data that came from interviews and authorities were right. The main result is: If we assumed that the degraded grassland of Maqu needs 10 years to be restored, and divided the restoring period into two stages, then the restoration cost was 0.85 × 108 RMB per year in former 4 years, 0.022 × 108 RMB per year in latter 6 years. The total cost of Maqu grassland restoration was 3.62 × 108 RMB. For all the costs of restoration, WTA occupied 94% and WTP only occupied 6%, suggesting that local grassland degradation was mainly caused by overgrazing and that the overloading livestock must be eliminated in order to achieve restoration successfully. Our research also showed that combining WTP and WTA in contingent valuation is very useful in estimating the cost of environmental improvement projects. Of course, whether these results are right or not, further researches are needed in the future, especially for the actual number of livestock in Maqu grassland.
机译：在大多数或有估值（CV）研究中，经常单独使用WTP（支付意愿）和WTA（接受意愿），因此抗议或无回应甚至even之以鼻的答案越来越多，关于CV在市场中的可靠性的争论仍在继续经济政策分析。为了提高CV的可靠性，同时使用WTP和WTA来估算玛曲草原生态系统的恢复成本。数据部分来自问卷调查，部分来自访谈和权威。在得出结论之前，我们假设来自访谈和权威机构的这些数据是正确的。主要结果是：如果假设退化的玛曲草原需要恢复10年，并将恢复期分为两个阶段，则前4年的恢复成本为0.85×108元/年，0.022×108元/年后6年每年。玛曲草原恢复的总成本为3.62×108元。在所有恢复成本中，WTA占94％，WTP仅占6％，这表明当地草地退化主要是由于过度放牧造成的，必须消除超载牲畜才能成功恢复。我们的研究还表明，将WTP和WTA结合在或有估值中，对估算环境改善项目的成本非常有用。当然，无论这些结果是否正确，未来都需要进一步研究，尤其是对玛曲草原的实际牲畜数量。

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