Department of International Studies, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563 Japan.
J Environ Manage. 2013 Nov 30;130:48-54. doi: 10.1016/j.jenvman.2013.08.025. Epub 2013 Sep 21.
In recent years, shade coffee certification programs have attracted increasing attention from conservation and development organizations. Certification programs offer an opportunity to link environmental and economic goals by providing a premium price to producers and thereby contributing to forest conservation. However, the significance of the conservation efforts of certification programs remains unclear because of a lack of empirical evidence. The purpose of this study was to examine the impact of a shade coffee certification program on forest conservation. The study was conducted in the Belete-Gera Regional Forest Priority Area in Ethiopia, and remote sensing data of 2005 and 2010 were used to gauge the change of forest area. Using propensity score matching estimation, we found that forests under the coffee certification program were less likely to be deforested than forests without forest coffee. By contrast, the difference in the degree of deforestation between forests with forest coffee but not under the certification program and forests with no forest coffee is statistically insignificant. These results suggest that the certification program has had a large effect on forest protection, decreasing the probability of deforestation by 1.7 percentage points.
近年来，遮荫咖啡认证计划引起了保护和发展组织越来越多的关注。认证计划为生产者提供了一个溢价的机会，从而为森林保护做出贡献，实现了环境和经济目标的结合。然而，由于缺乏实证证据，认证计划的保护工作的意义仍然不清楚。本研究旨在探讨遮荫咖啡认证计划对森林保护的影响。该研究在埃塞俄比亚的贝雷泰-盖拉地区森林优先区进行，使用 2005 年和 2010 年的遥感数据来衡量森林面积的变化。利用倾向得分匹配估计，我们发现，在认证计划下的咖啡林比没有咖啡林的森林更不容易被砍伐。相比之下，有森林咖啡但不在认证计划下的森林和没有森林咖啡的森林之间的森林砍伐程度差异在统计上并不显著。这些结果表明，认证计划对森林保护产生了很大的影响，使森林砍伐的概率降低了 1.7 个百分点。
