...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Climatic Change >Water quality co-effects of greenhouse gas mitigation in U.S. agriculture.
【24h】

Water quality co-effects of greenhouse gas mitigation in U.S. agriculture.

机译：美国农业中减少温室气体的水质协同效应。

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

This study develops first-order estimates of water quality co-effects of terrestrial greenhouse gas (GHG) emission offset strategies in U.S. agriculture by linking a national level agricultural sector model (ASMGHG) to a national level water quality model (NWPCAM). The simulated policy scenario considers GHG mitigation incentive payments of $25 and $50 per tonne, carbon equivalent to landowners for reducing emissions or enhancing the sequestration of GHG through agricultural and land-use practices. ASMGHG projects that these GHG price incentives could induce widespread conversion of agricultural to forested lands, along with alteration of tillage practices, crop mix on land remaining in agriculture, and livestock management. This study focuses on changes in cropland use and management. The results indicate that through agricultural cropland about 60 to 70 million tonnes of carbon equivalent (MMTCE) emissions can be mitigated annually in the U.S. These responses also lead to a 2% increase in aggregate national water quality, with substantial variation across regions. Such GHG mitigation activities are found to reduce annual nitrogen loadings into the Gulf of Mexico by up to one half of the reduction goals established by the national Watershed Nutrient Task Force for addressing the hypoxia problem..
机译：这项研究通过将国家级农业部门模型（ASMGHG）与国家级水质模型（NWPCAM）关联起来，开发了美国农业中地面温室气体（GHG）排放抵消策略的水质协同效应的一阶估算。模拟的政策情景考虑了每吨25美元和50美元的温室气体减排奖励金，相当于减少土地所有者的碳排放量，以通过农业和土地利用实践来减少排放量或增加温室气体的封存。 ASMGHG预测，这些温室气体价格激励措施可能会导致农业土地广泛转化为林地，并改变耕作方式，农业剩余土地上的作物混合以及牲畜管理。这项研究的重点是农田使用和管理的变化。结果表明，通过农业耕地，美国每年可以减少约60到7000万吨碳当量（MMTCE）排放。这些响应还导致全国总水质提高2％，并且各地区之间存在很大差异。人们发现，这种减少温室气体排放的活动可将每年流入墨西哥湾的氮负荷减少多达国家分水岭营养工作队为解决缺氧问题而制定的减少目标的一半。

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