气候变化领域集成服务门户(CCPortal): Agricultural production and greenhouse gas emissions from world regions-The major trends over 40 years

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DOI	10.1016/j.gloenvcha.2015.12.004
	Agricultural production and greenhouse gas emissions from world regions-The major trends over 40 years
	Bennetzen E.H.; Smith P.; Porter J.R.
发表日期	2016
ISSN	0959-3780
卷号	37
英文摘要	Since 1970, global agricultural production has more than doubled with agriculture and land-use change now responsible for ~1/4 of greenhouse gas emissions from human activities. Yet, while greenhouse gas (GHG) emissions per unit of agricultural product have been reduced at a global level, trends in world regions have been quantified less thoroughly. The KPI (Kaya-Porter Identity) is a novel framework for analysing trends in agricultural production and land-use change and related GHG emissions. We apply this to assess trends and differences in nine world regions over the period 1970-2007. We use a deconstructed analysis of emissions from the mix of multiple sources, and show how each is changing in terms of absolute emissions on a per area and per produced unit basis, and how the change of emissions from each source contributes to the change in total emissions over time. The doubling of global agricultural production has mainly been delivered by developing and transitional countries, and this has been mirrored by increased GHG emissions. The decoupling of emissions from production shows vast regional differences. Our estimates show that emissions per unit crop (as kg CO2-equivalents per Giga Joule crop product), in Oceania, have been reduced by 94% from 1093 to 69; in Central & South America by 57% from 849 to 362; in sub-Saharan Africa by 27% from 421 to 309, and in Europe by 56% from 86 to 38. Emissions per unit livestock (as kg CO2-eq. GJ-1 livestock product) have reduced; in sub-Saharan Africa by 24% from 6001 to 4580; in Central & South America by 61% from 3742 to 1448; in Central & Eastern Asia by 82% from 3,205 to 591, and; in North America by 28% from 878 to 632. In general, intensive and industrialised systems show the lowest emissions per unit of agricultural production. © 2016 Elsevier Ltd.
英文关键词	Agriculture; Climate change; Decoupling emissions; Greenhouse gas intensity; Kaya-identity; Kaya-Porter identity
学科领域	agricultural emission; agricultural production; analytical framework; atmospheric pollution; climate change; global change; greenhouse gas; human activity; land use change; pollutant source; World; Torreya nucifera
语种	英语
scopus关键词	agricultural emission; agricultural production; analytical framework; atmospheric pollution; climate change; global change; greenhouse gas; human activity; land use change; pollutant source; World; Torreya nucifera
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117403
作者单位	University of Copenhagen, Faculty of Science, Department of Plant and Environmental Sciences, Taastrup, DK-2630, Denmark; University of Aberdeen, Institute of Biological and Environmental Sciences, Aberdeen, AB24 3UU, United Kingdom; Natural Resource Institute, University of Greenwich, United Kingdom
推荐引用方式 GB/T 7714	Bennetzen E.H.,Smith P.,Porter J.R.. Agricultural production and greenhouse gas emissions from world regions-The major trends over 40 years[J],2016,37.
APA	Bennetzen E.H.,Smith P.,&Porter J.R..(2016).Agricultural production and greenhouse gas emissions from world regions-The major trends over 40 years.Global Environmental Change,37.
MLA	Bennetzen E.H.,et al."Agricultural production and greenhouse gas emissions from world regions-The major trends over 40 years".Global Environmental Change 37(2016).