首页    期刊浏览 2022年10月01日 星期六
登录注册

文章基本信息

  • 标题:Greenhouse gas mitigation by agricultural intensification
  • 本地全文:下载
  • 作者:Jennifer A. Burney ; Steven J. Davis ; David B. Lobell
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:2010
  • 卷号:107
  • 期号:26
  • 页码:12052-12057
  • DOI:10.1073/pnas.0914216107
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:As efforts to mitigate climate change increase, there is a need to identify cost-effective ways to avoid emissions of greenhouse gases (GHGs). Agriculture is rightly recognized as a source of considerable emissions, with concomitant opportunities for mitigation. Although future agricultural productivity is critical, as it will shape emissions from conversion of native landscapes to food and biofuel crops, investment in agricultural research is rarely mentioned as a mitigation strategy. Here we estimate the net effect on GHG emissions of historical agricultural intensification between 1961 and 2005. We find that while emissions from factors such as fertilizer production and application have increased, the net effect of higher yields has avoided emissions of up to 161 gigatons of carbon (GtC) (590 GtCO2e) since 1961. We estimate that each dollar invested in agricultural yields has resulted in 68 fewer kgC (249 kgCO2e) emissions relative to 1961 technology ($14.74/tC, or [~]$4/tCO2e), avoiding 3.6 GtC (13.1 GtCO2e) per year. Our analysis indicates that investment in yield improvements compares favorably with other commonly proposed mitigation strategies. Further yield improvements should therefore be prominent among efforts to reduce future GHG emissions.
  • 关键词:agriculture ; greenhouse gas emissions ; land use change ; climate change mitigation ; carbon price
国家哲学社会科学文献中心版权所有