Global nitrous oxide emissions from livestock manure during 1890–2020: An IPCC tier 2 inventory,Global Change Biology

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Global nitrous oxide emissions from livestock manure during 1890–2020: An IPCC tier 2 inventory
Global Change Biology ( IF 11.6 ) Pub Date : 2024-05-14 , DOI: 10.1111/gcb.17303
Lei Zhang _{1,

2,

3} , Shufen Pan _{3,

4} , Zhiyun Ouyang _{1,

2} , Josep G. Canadell ₅ , Jinfeng Chang ₆ , Giulia Conchedda ₇ , Eric A. Davidson ₈ , Fei Lu _{1,

2} , Naiqing Pan ₃ , Xiaoyu Qin _{1,

2} , Hao Shi _{1,

2} , Francesco N. Tubiello ₇ , Xiaoke Wang _{1,

2} , Yuzhong Zhang _{9,

10} , Hanqin Tian _{3,

11}

Affiliation

State Key Laboratory of Urban and Regional Ecology, Research Center for Eco‐Environmental Sciences Chinese Academy of Sciences Beijing China
University of Chinese Academy of Sciences Beijing China
Center for Earth System Science and Global Sustainability Schiller Institute for Integrated Science and Society, Boston College Chestnut Hill Massachusetts USA
Department of Engineering Boston College Chestnut Hill Massachusetts USA
Global Carbon Project, CSIRO Oceans and Atmosphere Canberra Australian Capital Territory Australia
College of Environmental and Resource Sciences, Zhejiang University Hangzhou China
Statistics Division, Food and Agriculture Organization of the United Nations, Via Terme di Caracalla Rome Italy
Appalachian Laboratory University of Maryland Center for Environmental Science Frostburg Maryland USA
Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering Westlake University Hangzhou Zhejiang China
Institute of Advanced Technology Westlake Institute for Advanced Study Hangzhou Zhejiang China
Department of Earth and Environmental Sciences Boston College Chestnut Hill Massachusetts USA

Nitrous oxide (N2O) emissions from livestock manure contribute significantly to the growth of atmospheric N2O, a powerful greenhouse gas and dominant ozone‐depleting substance. Here, we estimate global N2O emissions from livestock manure during 1890–2020 using the tier 2 approach of the 2019 Refinement to the 2006 IPCC Guidelines. Global N2O emissions from livestock manure increased by ~350% from 451 [368–556] Gg N year−1 in 1890 to 2042 [1677–2514] Gg N year−1 in 2020. These emissions contributed ~30% to the global anthropogenic N2O emissions in the decade 2010–2019. Cattle contributed the most (60%) to the increase, followed by poultry (19%), pigs (15%), and sheep and goats (6%). Regionally, South Asia, Africa, and Latin America dominated the growth in global emissions since the 1990s. Nationally, the largest emissions were found in India (329 Gg N year−1), followed by China (267 Gg N year−1), the United States (163 Gg N year−1), Brazil (129 Gg N year−1) and Pakistan (102 Gg N year−1) in the 2010s. We found a substantial impact of livestock productivity, specifically animal body weight and milk yield, on the emission trends. Furthermore, a large spread existed among different methodologies in estimates of global N2O emission from livestock manure, with our results 20%–25% lower than those based on the 2006 IPCC Guidelines. This study highlights the need for robust time‐variant model parameterization and continuous improvement of emissions factors to enhance the precision of emission inventories. Additionally, urgent mitigation is required, as all available inventories indicate a rapid increase in global N2O emissions from livestock manure in recent decades.

更新日期：2024-05-14

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