An assessment of alternative methods of estimating the effect of the ivory trade ban on poaching effort
An assessment of alternative methods of estimating the effect of the ivory trade ban on poaching effort
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DOI：
10.1016/s0921-8009(98)00102-5
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发表时间：
1999-07-01
影响因子：
7
通讯作者：
Burton, M
中科院分区：
文献类型：
--
作者：
Burton, M
国际社会于1989年颁布的象牙国际贸易禁令旨在保护非洲象（Loxononta africana）数量的减少，在分布国和主要消费国之间设置障碍。如果存在剩余贸易，那么禁令的效率取决于支付给偷猎者的价格的下降，以及偷猎努力对价格变化的反应。本文集中在后一个问题，并提供了一个审查的一些替代方法来建模偷猎的努力，扩展。结果发现，即使是低的剩余价格会引起一定程度的努力，将显着压低大象的数量。(C)1999 Elsevier Science B.V.保留所有权利。
The ban on international trade in ivory introduced by the international community in 1989 was intended to protect the declining stock of African elephant (Loxononta africana), by providing a barrier between the range state and the principal consuming nations. If there is a residual trade, then the efficiency of the ban is determined by the decline in the price paid to poachers, and the responsiveness of poaching effort to changing prices. This paper concentrates on the latter issue, and provides a review of a number of alternative approaches to modelling poaching effort, with extensions. It is found that even low residual prices would induce a level of effort that would significantly depress elephant numbers. (C) 1999 Elsevier Science B.V. All rights reserved.