干旱区生态环境知识资源中心(Arid): Developing a country specific method for estimating nitrous oxide emissions from agricultural soils in Canada

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DOI	10.1007/s10705-020-10058-w
	Developing a country specific method for estimating nitrous oxide emissions from agricultural soils in Canada
	Liang, Chang 1,2; MacDonald, Douglas 2; Thiagarajan, Arumugam 2; Flemming, Corey 2; Cerkowniak, Darrel 3; Desjardins, Raymond 1
通讯作者	Liang, Chang
来源期刊	NUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN	1385-1314
EISSN	1573-0867
出版年	2020
卷号	117 期号:2 页码:145-167
英文摘要	Accurate estimates of nitrous oxide (N2O) emissions from agricultural soils and management factors that influence emissions are necessary to capture the impact of mitigation measures and carry out life cycle analyses aimed at identifying best practices to reduce greenhouse gas emissions. We propose improvements to a country specific method for estimating N2O emissions from agricultural soils in Canada based on a compilation of soil N2O flux data from recent published literature. We provide a framework for the development of empirical models that could be applied in regions where similar data and information on N2O emissions are available. The method considers spatial elements such as soil texture, topography and climate based on a quantitative empirical relationship between synthetic N-induced soil N2O emission factor (EF) and growing season precipitation (P) {N2OEF = e((0.00558P-7.7))}. Emission factors vary from less than 0.0025 kg N2O-N kg N-1 in semi-arid regions of Canada to greater than 0.025 kg N2O-N kg N-1 in humid regions. This approach differentiates soil N2O EFs based on management factors. Specifically, empirical ratio factors are applied for sources of N of 1.0, 0.84, and 0.28 for synthetic N, animal manure N and crop residue N, respectively. Crop type ratio factors where soil N2O EFs from applied manure- and synthetic-N on perennial crops are approximately 19% of those on annual crops. This proposed approach improves the accuracy of the dominant factors that modulate N2O emissions from N application to soils.
英文关键词	Soil N2O emissions Synthetic N Organic N Crop residue N Tillage Perennial annual crop
类型	Article
语种	英语
国家	Canada
收录类别	SCI-E
WOS记录号	WOS:000522700800001
WOS关键词	GREENHOUSE-GAS CONTRIBUTIONS ; MONTHLY NH3 EMISSIONS ; N2O EMISSIONS ; FERTILIZER MANAGEMENT ; 12 ECOREGIONS ; INVENTORY ; CROP ; MITIGATION ; SYSTEMS ; TEMPERATE
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315243
作者单位	1.Agr & Agri Food Canada, Ottawa Res & Dev Ctr, Cent Expt Farm, 960 Carling Ave, Ottawa, ON K1A 0C6, Canada; 2.Environm & Climate Change Canada, Pollutant Inventories & Reporting Div, PVM, 7th Floor,351 St Joseph Blvd, Ottawa, ON K1A 0H3, Canada; 3.Agr & Agri Food Canada, Saskatoon Res & Dev Ctr, 107 Sci Pl, Saskatoon, SK S7N 0X2, Canada
推荐引用方式 GB/T 7714	Liang, Chang,MacDonald, Douglas,Thiagarajan, Arumugam,et al. Developing a country specific method for estimating nitrous oxide emissions from agricultural soils in Canada[J],2020,117(2):145-167.
APA	Liang, Chang,MacDonald, Douglas,Thiagarajan, Arumugam,Flemming, Corey,Cerkowniak, Darrel,&Desjardins, Raymond.(2020).Developing a country specific method for estimating nitrous oxide emissions from agricultural soils in Canada.NUTRIENT CYCLING IN AGROECOSYSTEMS,117(2),145-167.
MLA	Liang, Chang,et al."Developing a country specific method for estimating nitrous oxide emissions from agricultural soils in Canada".NUTRIENT CYCLING IN AGROECOSYSTEMS 117.2(2020):145-167.