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	Integrating agronomic practices to reduce greenhouse gas emissions while increasing the economic return in a rice-based cropping system
	Xia, Longlong1,2; Xia, Yongqiu1; Li, Bolun1,2; Wang, Jinyang1; Wang, Shuwei1; Zhou, Wei1; Yan, Xiaoyuan1
刊名	Agriculture ecosystems & environment
	2016-09-01
卷号	231页码:24-33
关键词	Rice-cropping system Straw fermentation Greenhouse gas intensity N reduction Net economic benefit
ISSN号	0167-8809
DOI	10.1016/j.agee.2016.06.020
通讯作者	Yan, xiaoyuan(yanxy@issas.ac.cn)
英文摘要	The effective mitigation of greenhouse gas (ghg) emissions from crop cultivation requires an overall consideration, due to the trade-off relationship between ghgs and the mitigation measures sometimes undermining grain yields and economic returns. to explore the maximum potential of ghg mitigation without sacrificing economic returns, we investigated the ghg emissions, crop yields and economic returns over two years in three rice-cropping systems (rice-wheat, rw; rice-fava bean, rb; and rice-fallow, rf). different n fertilization levels and straw incorporation methods were employed in each of the rice-cropping systems at the study site, in the taihu lake region (tlr) of china. bean straw produced in the rb system was fermented aerobically before incorporation, while straws produced in the rw and rf systems were directly incorporated into the soils. relative to the traditional rw system, methane emissions during the rice seasons were significantly reduced by 29-44% in the rb system; annual n inputs were reduced by 43%; annual nitrous oxide emissions for n fertilization treatments were decreased by 56-69%; and the average rice yield was increased by 5.2%. as a, result, the ghg intensity (ghgi) was significantly reduced by 11-41%, and the annual net economic benefit (neb) was increased by 22-94%. compared with the rw system, the ghgi in the rf system was increased by 8-30% and the neb was decreased by 3-33%. considering the current rice/wheat production practices employed in the tlr, the ghgi could be reduced by 26% while the neb could be improved by 23%, with an annual reduction in the n application rate (currently 525 kg n ha(-1)) by 20% and the conversion of the rw systems into rb systems that use straw fermentation. the results of this study suggest that high economic return and ghg mitigation could be simultaneously achieved by the integrated adoption of reasonable reduction in n application rates, the use of appropriate rice-cropping systems and by employing eco-friendly straw management. (c) 2016 elsevier b.v. all rights reserved.
WOS关键词	NORTH CHINA PLAIN ; ORGANIC-CARBON ; NITROUS-OXIDE ; FERTILIZER APPLICATION ; STRAW INCORPORATION ; AGRICULTURAL SOILS ; METHANE EMISSIONS ; N2O EMISSIONS ; PADDY SOILS ; YIELD GAP
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:000382592700003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375478
专题	中国科学院大学
通讯作者	Yan, Xiaoyuan
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xia, Longlong,Xia, Yongqiu,Li, Bolun,et al. Integrating agronomic practices to reduce greenhouse gas emissions while increasing the economic return in a rice-based cropping system[J]. Agriculture ecosystems & environment,2016,231:24-33.
APA	Xia, Longlong.,Xia, Yongqiu.,Li, Bolun.,Wang, Jinyang.,Wang, Shuwei.,...&Yan, Xiaoyuan.(2016).Integrating agronomic practices to reduce greenhouse gas emissions while increasing the economic return in a rice-based cropping system.Agriculture ecosystems & environment,231,24-33.
MLA	Xia, Longlong,et al."Integrating agronomic practices to reduce greenhouse gas emissions while increasing the economic return in a rice-based cropping system".Agriculture ecosystems & environment 231(2016):24-33.

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