Valuing a Global Environmental Good: U.S. Residents' Willingness to Pay to Protect Tropical Rain Forests
通过全国性调查，用条件价值法评估美国居民对保护热带雨林的支付意愿，平均每户愿意一次性支付21-31美元以额外保护5%的热带森林。
Although contingent valuation (CV) is the most common technique for valuing nonmarket environmental resources, rarely has it been applied to global environmental goods. This study uses CV in a national survey to assess the value U.S. residents place on tropical rain forest protection. On average, respondents were willing to make a onetime payment of approximately $21-31 per household to protect an additional 5 percent of tropical forests. Although respondents were able to give consistent responses across two different CV formats, focus groups were unwilling or unable to allocate their aggregate rainforest valuations across or among regions or specific rain forests.