GSTDTAP  > 气候变化
DOI10.1111/gcb.13709
Methane emission from global livestock sector during 1890-2014: Magnitude, trends and spatiotemporal patterns
Dangal, Shree R. S.1,2; Tian, Hanqin1,2,3; Zhang, Bowen1,2; Pan, Shufen1,2,3; Lu, Chaoqun4; Yang, Jia1,2
2017-10-01
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2017
卷号23期号:10
文章类型Article
语种英语
国家USA; Peoples R China
英文摘要

Human demand for livestock products has increased rapidly during the past few decades largely due to dietary transition and population growth, with significant impact on climate and the environment. The contribution of ruminant livestock to greenhouse gas (GHG) emissions has been investigated extensively at various scales from regional to global, but the long-term trend, regional variation and drivers of methane (CH4) emission remain unclear. In this study, we use Intergovernmental Panel on Climate Change (IPCC) Tier II guidelines to quantify the evolution of CH4 emissions from ruminant livestock during 1890-2014. We estimate that total CH4 emissions in 2014 was 97.1 million tonnes (MT) CH4 or 2.72 Gigatonnes (Gt) CO2-eq (1 MT = 1012 g, 1 Gt = 1015 g) from ruminant livestock, which accounted for 47%-54% of all non-CO2 GHG emissions from the agricultural sector. Our estimate shows that CH4 emissions from the ruminant livestock had increased by 332% (73.6 MT CH4 or 2.06 Gt CO2-eq) since the 1890s. Our results further indicate that livestock sector in dry-lands had 36% higher emission intensity (CH4 emissions/km(2)) compared to that in nondrylands in 2014, due to the combined effect of higher rate of increase in livestock population and low feed quality. We also find that the contribution of developing regions (Africa, Asia and Latin America) to the total CH4 emissions had increased from 51.7% in the 1890s to 72.5% in the 2010s. These changes were driven by increases in livestock numbers (LU units) by up to 121% in developing regions, but decreases in livestock numbers and emission intensity (emission/km(2)) by up to 47% and 32%, respectively, in developed regions. Our results indicate that future increases in livestock production would likely contribute to higher CH4 emissions, unless effective strategies to mitigate GHG emissions in livestock system are implemented.


英文关键词drylands enteric fermentation IPCC Tier II livestock manure management methane emission
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000410642100016
WOS关键词GREENHOUSE-GAS EMISSIONS ; HEXAFLUORIDE SF6 TRACER ; CLIMATE-CHANGE ; SEMIARID ECOSYSTEMS ; FOOD SECURITY ; MITIGATION ; CARBON ; LAND ; VARIABILITY ; CATTLE
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/16656
专题气候变化
资源环境科学
作者单位1.Auburn Univ, Int Ctr Climate & Global Change Res, Auburn, AL 36849 USA;
2.Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA;
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China;
4.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA USA
推荐引用方式
GB/T 7714
Dangal, Shree R. S.,Tian, Hanqin,Zhang, Bowen,et al. Methane emission from global livestock sector during 1890-2014: Magnitude, trends and spatiotemporal patterns[J]. GLOBAL CHANGE BIOLOGY,2017,23(10).
APA Dangal, Shree R. S.,Tian, Hanqin,Zhang, Bowen,Pan, Shufen,Lu, Chaoqun,&Yang, Jia.(2017).Methane emission from global livestock sector during 1890-2014: Magnitude, trends and spatiotemporal patterns.GLOBAL CHANGE BIOLOGY,23(10).
MLA Dangal, Shree R. S.,et al."Methane emission from global livestock sector during 1890-2014: Magnitude, trends and spatiotemporal patterns".GLOBAL CHANGE BIOLOGY 23.10(2017).
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