Despite extensive efforts made by national and international certification agencies, Indonesian smallholder farmers’ participation in palm oil certification schemes adoption remains low. A fundamental obstacle is the smallholder practice of rainforest transformation into oil palm plantation which is forbidden by the agencies. In this context, we investigate three policies that could lead to a reduction in rainforest deforestation by smallholders: price premium on certified palm oil; the provision of environmental information; contributor recognition. In order to evaluate the influence of the policies ex‐ante, we conduct a social dilemma experiment involving rubber and oil palm smallholders in Jambi Province, Sumatra, Indonesia. The findings indicate that the price premium and provision of context‐specific environmental information could reduce rainforest transformation. However, a statistically significant effect of contributor recognition was not found.

中文翻译：

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阻止雨林转型：事前政策影响分析

尽管国家和国际认证机构做出了巨大努力，但印尼小农户对采用棕榈油认证计划的参与仍然很低。一个根本的障碍是小农户将热带雨林转变为油棕种植的做法，这是该机构所禁止的。在这种情况下，我们研究了三项可能导致小农减少雨林砍伐的政策：认证棕榈油的价格溢价；提供环境信息；贡献者认可。为了事前评估政策的影响，我们在印度尼西亚苏门答腊的占碑省进行了橡胶和油棕小农户的社会困境实验。研究结果表明，价格溢价和提供针对特定环境的环境信息可以减少雨林的转化。但是，未发现贡献者识别具有统计学意义的效果。