<p>Simultaneous mitigation of reactive nitrogen and greenhouse gas emissions in livestock systems is a critical challenge for sustainable food production. Here we conduct a meta-analysis of over 3,000 empirical observations to assess the mitigation performance of integrated technologies within livestock farms. Mitigation options are categorized into low-cost and easily scalable technologies and precision-integrated technologies, with the latter performing better by reducing reactive nitrogen and non-CO<sub>2</sub> greenhouse gas emissions by two-fifths and one-third, respectively. High-efficacy hotspots emerged in North America, Europe and East and Southeast Asia. Beyond current practices, a transition towards an integrated management framework centred on enclosed manure-treatment systems offers further reductions of over half for reactive nitrogen and two-thirds for non-CO<sub>2</sub> greenhouse gas by 2050. Meeting net-zero targets will require sustained capture of almost three-quarters of CO<sub>2</sub> from these systems. These findings highlight the critical role of integrated approaches for advancing sustainable and climate-resilient livestock production systems.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Integrated bundled measures could halve reactive nitrogen losses and reach net-zero greenhouse gas emissions in global livestock systems

  • Yubo Cao,
  • Ling Liu,
  • Tom Missellbrook,
  • Pete Smith,
  • Lin Ma,
  • Hao Zhao,
  • Xinpeng Jin,
  • Lu Zhang,
  • Gang Wang,
  • Keren Ding,
  • Xuan Wang,
  • Yakai Wang,
  • Juan Liu,
  • Hongge Wang,
  • Zelong Liu,
  • Atul Kumar,
  • Yongqing Guo,
  • Chenfeng Tian,
  • Zewen Tan,
  • Weimin Sun

摘要

Simultaneous mitigation of reactive nitrogen and greenhouse gas emissions in livestock systems is a critical challenge for sustainable food production. Here we conduct a meta-analysis of over 3,000 empirical observations to assess the mitigation performance of integrated technologies within livestock farms. Mitigation options are categorized into low-cost and easily scalable technologies and precision-integrated technologies, with the latter performing better by reducing reactive nitrogen and non-CO2 greenhouse gas emissions by two-fifths and one-third, respectively. High-efficacy hotspots emerged in North America, Europe and East and Southeast Asia. Beyond current practices, a transition towards an integrated management framework centred on enclosed manure-treatment systems offers further reductions of over half for reactive nitrogen and two-thirds for non-CO2 greenhouse gas by 2050. Meeting net-zero targets will require sustained capture of almost three-quarters of CO2 from these systems. These findings highlight the critical role of integrated approaches for advancing sustainable and climate-resilient livestock production systems.