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	Management opportunities to mitigate greenhouse gas emissions from Chinese agriculture
	Nayak, Dali1; Saetnan, Eli2; Cheng, Kun3; Wang, Wen4,5; Koslowski, Frank6; Cheng, Yan-Fen3; Zhu, Wei Yun3; Wang, Jia-Kun7; Liu, Jian-Xin7; Moran, Dominic6
刊名	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
	2015-11-01
卷号	209页码:108-124
关键词	Agriculture Management Technical potential Economic potential Cropland Grassland Livestock MACC China
ISSN号	0167-8809
DOI	10.1016/j.agee.2015.04.035
通讯作者	Nayak, Dali(d.nayak@abdn.ac.uk)
英文摘要	Agriculture accounts for approximately 11% of China's national greenhouse gas (GHG) emissions. Through adoption of region-specific best management practices, Chinese farmers can contribute to emission reduction while maintaining food security for its large population (>1300 Million). This paper presents the outcome of a bottom-up assessment to quantify technical potential of mitigation measures for Chinese agriculture using meta-analysis of data from 240 publications for cropland, 67 publications for grassland and 139 publications for livestock, and provides the reference scenario for the cost analysis of identified mitigation measures. Management options with greatest mitigation potential for rice, or rice-based cropping systems are conservation tillage, controlled irrigation; replacement of urea with ammonium sulphate, nitrogen (N) inhibitor application, reduced N fertilizer application, integrated rice-fish-duck farming and biochar application. A 15% reduction in current average synthetic N fertilizer application for rice in China i.e., 231 kg N ha(-1), would result in 12% decrease in direct soil nitrous oxide (N2O) emissions. Combined application of chemical and organic fertilizer, conservation tillage, biochar application and reduced N application are possible measures that can reduce overall GHG emissions from upland cropping systems. Conventional fertilizer inputs for greenhouse vegetables are more than 2-8 times the optimal crop nutrient demand. A 20-40% reduction in N fertilizer application to vegetable crops can reduce N2O emissions by 32-121%, while not negatively impacting the yield. One of the most important mitigation measures for agricultural grasslands could be conversion of low yielding cropland, particularly on slopes, to shrub land or grassland, which is also a promising option to decrease soil erosion. In addition, grazing exclusion and reduced grazing intensity can increase SOC sequestration and decrease overall emissions while improving the largely degraded grasslands. For livestock production, where poor quality forage is commonly fed, improving grazing management and diet quality can reduce methane (CH4) emissions by 11% and 5%, on average. Dietary supplements can reduce CH4 emissions further, with lipids (15% reduction) and tannins or saponins (11% reduction) showing the greatest potential. We also suggest the most economically cost-effective mitigation measures, drawing on related work on the construction of marginal abatement cost curves for the sector. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	SOIL ORGANIC-CARBON ; LAND-USE CHANGE ; NITROUS-OXIDE EMISSIONS ; DIRECT N2O EMISSIONS ; RICE-GROWING-SEASON ; METHANE PRODUCTION ; NORTHERN CHINA ; PADDY FIELDS ; BIOCHAR AMENDMENT ; META ANALYSIS
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000358463000011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558348
专题	南京土壤研究所
通讯作者	Nayak, Dali
作者单位	1.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland 2.Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth SY23 3FL, Dyfed, Wales 3.Nanjing Agr Univ, Ctr Agr & Environm Agr, Nanjing 210095, Jiangsu, Peoples R China 4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 5.Univ Paris 09, Climate Econ Chair, F-75002 Paris, France 6.Scotlands Rural Coll, Land Econ & Environm Res Grp, Edinburgh EH9 3JG, Midlothian, Scotland 7.Zhejiang Univ, Inst Dairy Sci, Hangzhou 310058, Zhejiang, Peoples R China 8.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China 9.Rothamsted Res North Wyke, Sustainable Soils & Grassland Syst Dept, Okehampton EX20 2SB, Devon, England 10.UK China Sustainable Agr Innovat Network SAIN, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Nayak, Dali,Saetnan, Eli,Cheng, Kun,et al. Management opportunities to mitigate greenhouse gas emissions from Chinese agriculture[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2015,209:108-124.
APA	Nayak, Dali.,Saetnan, Eli.,Cheng, Kun.,Wang, Wen.,Koslowski, Frank.,...&Smith, Pete.(2015).Management opportunities to mitigate greenhouse gas emissions from Chinese agriculture.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,209,108-124.
MLA	Nayak, Dali,et al."Management opportunities to mitigate greenhouse gas emissions from Chinese agriculture".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 209(2015):108-124.

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