Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/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
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
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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