The study by Bastin et al. (Reports, 12 May 2017, p. 635) is based on an incomplete delimitation of dry forest distribution and on an old and incorrect definition of drylands. Its sampling design includes many plots located in humid ecosystems and ignores critical areas for the conservation of dry forests. Therefore, its results and conclusions may be unreliable.

中文翻译：

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评论“旱地生物群落中的森林范围”

Bastin 等人的研究。（报告，2017 年 5 月 12 日，第 635 页）基于对旱地森林分布的不完整划界以及对旱地的古老且不正确的定义。其抽样设计包括许多位于潮湿生态系统中的地块，而忽略了保护干燥森林的关键区域。因此，其结果和结论可能不可靠。