...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >The global environmental hazard of glyphosate use
【24h】

The global environmental hazard of glyphosate use

机译：草甘膦使用的全球环境危害

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Agricultural pesticides can become persistent environmental pollutants. Among many, glyphosate (GLP) is under particular scrutiny because of its extensive use and its alleged threats to the ecosystem and human health. Here, we introduce the first global environmental contamination analysis of GLP and its metabolite, AMPA, conducted with a mechanistic dynamic model at 0.5 × 0.5° spatial resolution (about 55 km at the equator) fed with geographically-distributed agricultural quantities, soil and biogeochemical properties, and hydroclimatic variables. Our analyses reveal that about 1% of croplands worldwide (385,000 km~2) are susceptible to mid to high contamination hazard and less than 0.1% has a high hazard. Hotspots found in South America, Europe, and East and South Asia were mostly correlated to widespread GLP use in pastures, soybean, and corn; diffuse contributing processes were mainly biodegradation recalcitrance and persistence, while soil residue accumulation and leaching below the root zone contributed locally to the hazard in hotspots. Hydroclimatic and soil variables were major controlling factors of contamination hotspots. The relatively low risk of environmental exposure highlighted in our work for a single active substance does not rule out a greater recognition of environmental pollution by pesticides and calls for worldwide cooperation to develop timely standards and implement regulated strategies to prevent excess global environmental pollution.
机译：农业农药可以成为持久性环境污染物。在许多草甘膦（GLP）中，草甘膦（GLP）由于其广泛使用及其对生态系统和人类健康的威胁而受到特别审查。在这里，我们介绍了GLP及其代谢产物AMPA的首次全球环境污染分析，该分析是在空间分辨率为0.5×0.5°（赤道约55 km）的机械动力学模型下进行的，该模型由地理分布的农业数量，土壤和生物地球化学组成性质和水文气候变量。我们的分析表明，全世界约1％的耕地（385,000 km〜2）易受中度至高度污染的危害，而不到0.1％的耕地具有较高的危害。在南美，欧洲以及东亚和南亚发现的热点大多与牧场，大豆和玉米中广泛使用的GLP有关。扩散的贡献过程主要是生物降解的顽固性和持久性，而土壤残渣的积累和根区以下的淋溶则是造成热点地区局部危害的原因。水文气候和土壤变量是污染热点的主要控制因素。我们在工作中强调的单一活性物质相对较低的环境暴露风险并不意味着人们会更多地认识到农药对环境污染的危害，并呼吁世界范围内开展合作以制定及时的标准并实施有针对性的战略，以防止过度的全球环境污染。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号