College of Resources and Environmental Sciences; National Academy of Agriculture Green Development; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, China; Earth Systems and Global Change group, Environmental Sciences Department, Wageningen University & Research, Wageningen, the Netherlands.
College of Resources and Environmental Sciences; National Academy of Agriculture Green Development; Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, China; Earth Systems and Global Change group, Environmental Sciences Department, Wageningen University & Research, Wageningen, the Netherlands.
Water Res. 2024 Sep 1;261:121986. doi: 10.1016/j.watres.2024.121986. Epub 2024 Jun 21.
Glyphosate is widely used in agriculture for weed control; however, it may pollute water systems with its by-product, aminomethylphosphonic acid (AMPA). Therefore, a better understanding of the flows of glyphosate and AMPA from soils into rivers is required. We developed the spatially explicit MARINA-Pesticides model to estimate the annual inputs of glyphosate and AMPA into rivers, considering 10 crops in 10,226 sub-basins globally for 2020. Our model results show that, globally, 880 tonnes of glyphosate and 4,090 tonnes of AMPA entered rivers. This implies that 82 % of the river inputs were from AMPA, with glyphosate accounting for the remainder. Over half of AMPA and glyphosate in rivers globally originated from corn and soybean production; however, there were differences among sub-basins. Asian sub-basins accounted for over half of glyphosate in rivers globally, with the contribution from corn production being dominant. South American sub-basins accounted for approximately two-thirds of AMPA in rivers globally, originating largely from soybean production. Our findings constitute a reference for implementing and supporting effective control strategies to achieve Sustainable Development Goals 2 and 6 (food production and clean water, respectively) simultaneously in the future.
草甘膦被广泛用于农业除草；然而，其副产物氨甲基膦酸（AMPA）可能会污染水系。因此，需要更好地了解草甘膦和 AMPA 从土壤流入河流的情况。我们开发了具有空间明确性的 MARINA-Pesticides 模型，以估计 2020 年全球 10 种作物在 10226 个小流域中每年向河流输入的草甘膦和 AMPA 量。我们的模型结果表明，全球范围内有 880 吨草甘膦和 4090 吨 AMPA 进入河流。这意味着 82%的河流输入来自 AMPA，其余则来自草甘膦。在全球范围内，超过一半的 AMPA 和草甘膦来自玉米和大豆的生产；然而，各小流域之间存在差异。亚洲小流域的河流中草甘膦含量超过全球的一半，主要来自玉米生产。南美小流域的河流中 AMPA 含量约占全球的三分之二，主要来自大豆生产。我们的研究结果为未来同时实施和支持有效控制策略，以实现可持续发展目标 2（粮食生产）和 6（清洁水）提供了参考。
