干旱区生态环境知识资源中心(Arid): Effective climate change mitigation through cover cropping and integrated fertilization: A global warming potential assessment from a 10-year field experiment

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DOI	10.1016/j.jclepro.2019.118307
	Effective climate change mitigation through cover cropping and integrated fertilization: A global warming potential assessment from a 10-year field experiment
	Guardia, Guillermo; Aguilera, Eduardo; Vallejo, Antonio; Sanz-Cobena, Alberto; Alonso-Ayuso, Maria; Quemada, Miguel
通讯作者	Guardia, Guillermo
来源期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
EISSN	1879-1786
出版年	2019
卷号	241
英文摘要	In this study, field-specific data was collected from a 10-year experiment in central Spain in which vetch (Vida sp. L.) and barley (Hordeum vulgare L.) were established as cover crops and compared to the traditional fall-winter fallow between two irrigated cash crops, maize (Zea mays L.) and sunflower (Helianthus annuus L.). The global warming potential (GWP) balance included direct and indirect (nitrous oxide (N2O) resulting from the deposition of ammonia (NH3) or from leached nitrate (NO3-)) soil greenhouse gas (GHG) emissions, changes in soil organic carbon (SOC) and albedo, and carbon dioxide equivalent (CO(2)eq) emissions from inputs, irrigation and farm operations. Several scenarios involving i) changes in the termination method of the cover crops, ii) consideration of the application of a distinct nitrogen (N) source (urea, slurry or manure instead of ammonium nitrate) or nitrification inhibitors, iii) employing the same N rate for all treatments (i.e., conventional instead of integrated fertilization), iv) modelling SOC accumulation over a 100-year horizon, and v) using default emission factors, were also analysed. Under the conditions of our experiment, cover crops mitigated yield-scaled emissions by 77.4% (barley) and 91.9% (vetch). Synthetic N fertilization (particularly the industrial production of fertilizer) contributed 38% to the balance of the cover cropping treatments, followed by SOC (22.5%), irrigation (14.7%) and albedo (14.5%). All scenarios led to notable mitigation efficacies, ranging from 39% mitigation (in barley when considering default or non-specific emission factors) to a net CO 2 eq sink (i.e., >100% mitigation) in the scenario consisting of the replacement of ammonium nitrate by urea or organic fertilizers although with side effects on NH 3 volatilization and/or yields. Based on these results, the combined use of cover cropping and integrated soil fertility management could lead to the design of Cneutral irrigated cropping systems in semi-arid regions. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Catch crop Green manure Carbon footprint Life cycle assessment Carbon sequestration Conservation agriculture
类型	Article
语种	英语
国家	Spain
收录类别	SCI-E
WOS记录号	WOS:000489275900048
WOS关键词	GREENHOUSE-GAS EMISSIONS ; NITROUS-OXIDE EMISSIONS ; SOIL CARBON SEQUESTRATION ; N2O EMISSIONS ; NITRIFICATION INHIBITORS ; AMMONIA VOLATILIZATION ; ENVIRONMENTAL IMPACTS ; ORGANIC-CARBON ; NO-TILL ; CROPS
WOS类目	Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
EI主题词	2019-12-20
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311880
作者单位	Univ Politecn Madrid, CEIGRAM, ETSI Agron Alimentaria & Biosistemas, Ciudad Univ S-N, E-28040 Madrid, Spain
推荐引用方式 GB/T 7714	Guardia, Guillermo,Aguilera, Eduardo,Vallejo, Antonio,et al. Effective climate change mitigation through cover cropping and integrated fertilization: A global warming potential assessment from a 10-year field experiment[J],2019,241.
APA	Guardia, Guillermo,Aguilera, Eduardo,Vallejo, Antonio,Sanz-Cobena, Alberto,Alonso-Ayuso, Maria,&Quemada, Miguel.(2019).Effective climate change mitigation through cover cropping and integrated fertilization: A global warming potential assessment from a 10-year field experiment.JOURNAL OF CLEANER PRODUCTION,241.
MLA	Guardia, Guillermo,et al."Effective climate change mitigation through cover cropping and integrated fertilization: A global warming potential assessment from a 10-year field experiment".JOURNAL OF CLEANER PRODUCTION 241(2019).