Abstract Improved seeds varieties have led to an increase in agricultural production as well as to a change in agricultural practices and input use. While some of these new practices can be more environmentally sustainable, others may lead to a higher level of environmental degradation. In a case study using an original survey method of farming households on the Philippine island of Mindanao covering the past ten years, this paper finds a very robust positive correlation between herbicide tolerant corn cultivation and landslide occurrence. This effect is robust to the inclusion of plot fixed effect, indicating that physical characteristics of the farm do not explain the results. Instead, more aggressive weed control via broad-spectrum herbicide appears as a likely mechanism.

中文翻译：

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菲律宾高地抗除草剂玉米的生物技术作物、投入物使用和滑坡案例研究

摘要 改良种子品种导致农业产量增加以及农业实践和投入物使用的变化。虽然其中一些新做法在环境上更具可持续性，但其他一些做法可能会导致更高程度的环境退化。在使用菲律宾棉兰老岛过去十年农户原始调查方法的案例研究中，本文发现耐除草剂玉米种植与滑坡发生之间存在非常强的正相关关系。这种效应对于包含地块固定效应是稳健的，表明农场的物理特征不能解释结果。相反，通过广谱除草剂进行更积极的杂草控制似乎是一种可能的机制。