Conserving rhinos by legal trade: Insights from a choice experiment with rhino horn consumers
通过对345名越南犀牛角消费者的选择实验，发现消费者偏好合法来源的犀牛角，但合法贸易可能仍面临黑市竞争，减少盗猎取决于合法供应、消费者偏好改变和监管努力。
A legal rhino horn trade is suggested in order to reduce poaching. To examine the implications of this proposition, we conducted a choice experiment with 345 rhino horn consumers in Vietnam, investigating their preferences for legality, source, price and peer experience of medicinal efficacy as attributes in their decision to purchase rhino horn. We calculated consumers' willingness to pay for each attribute level. Consumers preferred and were willing to pay more for wild than semi-wild and farmed rhino horn but showed the strongest preference for legal horn, although higher-income consumers were less concerned about legality. The number of peers having used rhino horn without positive effect reduced preference for wild-sourced horn and increased preference for legality. Our results suggest that a legal trade in rhino horn would likely continue to face competition from a parallel black market. Whether poaching would be reduced depends on the legal supply of wild and semi-wild horns, campaigns ability to change consumer preferences, and regulation efforts.