Application of herbicides is likely to reduce greenhouse gas (N2O and CH4) emissions from rice-wheat cropping systems

doi:10.1016/j.atmosenv.2015.02.029

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	Application of herbicides is likely to reduce greenhouse gas (N2O and CH4) emissions from rice-wheat cropping systems
	Jiang, Jingyan ; Chen, Linmei ; Sun, Qing ; Sang, Mengmeng ; Huang, Yao 1
刊名	ATMOSPHERIC ENVIRONMENT
	2015
卷号	107 页码:62-69
关键词	Methane Nitrous oxide Herbicides Mitigation Cropland
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2015.02.029
文献子类	Article
英文摘要	Herbicides have been widely used to control weeds in croplands; however, their effects on greenhouse gas emissions remain unclear. The effects of three wheat herbicides (acetochlor, AC; tribenuron-methyl, TBM; fenoxaprop-p-ethyl, FE) and two rice herbicides (butachlor, BC; bensulfuron-methyl, BSM) on N2O and CH4 emissions were investigated in this study. In the wheat growing season, applications of AC and FE + TBM significantly reduced N2O emissions by 31% compared with no herbicide use (p = 0.001). In the rice growing season, the application of BC significantly reduced CH4 emissions by 58% (p = 0.022), and BSM significantly reduced N2O emissions by 27% (p = 0.040); however, no significant difference among treatments with regard to the aggregate emissions of N2O and CH4 in the CO2 equivalent for the 100-year horizon was observed (p > 0.05). Relative to control plots, which were not treated with herbicides, the combined application of the herbicides FE and TBM in the wheat season led to a significant decrease in greenhouse gas intensity (GHGI) by similar to 41% (p = 0.002), and the application of BC together with BSM reduced GHGI by 22% in the rice season, although this reduction was not statistically significant (p = 0.158). Further investigation suggested that the inhibitory effect of herbicides on N2O emissions in the wheat field could be ascribed to low soil ammonium nitrogen and less abundance of denitrifying bacteria. The inhibitory effects of separate applications of BC on CH4 emissions in rice fields, in contrast, were linked to high soil nitrate nitrogen and urease activity. (C) 2015 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences ; Meteorology & Atmospheric Sciences
电子版国际标准刊号	1873-2844
出版地	OXFORD
WOS关键词	NITROUS-OXIDE ; BENSULFURON-METHYL ; METHANE EMISSION ; SOIL ; BUTACHLOR ; SUPPRESSION ; COMMUNITY ; FIELD ; MICROORGANISMS ; NITRIFICATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000351974900008
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05020200] ; National Basic Research Program of China (973 Program) [2010CB950604] ; National Natural Science Foundation of China [40975091, 41375150]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25861]
专题	植被与环境变化国家重点实验室
作者单位	1.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Jingyan,Chen, Linmei,Sun, Qing,et al. Application of herbicides is likely to reduce greenhouse gas (N2O and CH4) emissions from rice-wheat cropping systems[J]. ATMOSPHERIC ENVIRONMENT,2015,107:62-69.
APA	Jiang, Jingyan,Chen, Linmei,Sun, Qing,Sang, Mengmeng,&Huang, Yao.(2015).Application of herbicides is likely to reduce greenhouse gas (N2O and CH4) emissions from rice-wheat cropping systems.ATMOSPHERIC ENVIRONMENT,107,62-69.
MLA	Jiang, Jingyan,et al."Application of herbicides is likely to reduce greenhouse gas (N2O and CH4) emissions from rice-wheat cropping systems".ATMOSPHERIC ENVIRONMENT 107(2015):62-69.