In a climate change context, changing temperature and precipitation patterns are expected to have strong impacts on Brazilian eucalypt plantations. Implementing adaptive water-efficient management practices is thus becoming necessary to maintain high levels of productivity while preserving the water resources. This paper investigates the ability of eucalypt farmers to modify their current silvicultural practices in order to adapt to drought in the near future. We ran a choice experiment in the state of Minas Gerais, among 80 eucalypt tree farmers, who were asked to choose from several management options associated with various financial supports. The results show that adaptation by reducing the length of the eucalypt rotation proves to be by far the preferred option, despite the associated costs. On the contrary, reducing density appears to be the least chosen option by the respondents, which may suggest that they underestimate the benefits of this strategy. We moreover find a clear and relevant segmentation of farmers' choice behavior, the general preference for reducing the length of the eucalypt rotation being driven by the most vulnerable farmers of the sample.

在气候变化的背景下，不断变化的温度和降水模式预计将对巴西桉树人工林产生重大影响。因此，在保持水资源的同时，要保持高水平的生产力，就必须实施适应性的节水型管理实践。本文研究了桉树农户改变其目前的造林方式以适应近期干旱的能力。我们在米纳斯吉拉斯州（Minas Gerais）的80名桉树种植者中进行了一项选择实验，他们被要求从与各种财务支持相关的几种管理方案中进行选择。结果表明，尽管存在相关成本，但通过减少桉树轮换的长度进行的适应已被证明是首选方案。相反，降低密度似乎是受访者最不选择的选择，这可能表明他们低估了此策略的好处。此外，我们发现了农民选择行为的明确且相关的细分，而减少桉树轮换时间的普遍偏好是由样本中最脆弱的农民驱动的。