Fertilization effects on CH4, N2O and CO2 fluxes from a subtropical double rice cropping system

doi:10.17221/453/2018-PSE

	Fertilization effects on CH4, N2O and CO2 fluxes from a subtropical double rice cropping system
	Yuan, Ye 1,2; Dai, Xiaoqin 1; Wang, Huimin 1
刊名	PLANT SOIL AND ENVIRONMENT
	2019
卷号	65 期号:4 页码:189-197
关键词	nitrogen addition rice paddy greenhouse gases greenhouse gas intensity
ISSN号	1214-1178
DOI	10.17221/453/2018-PSE
通讯作者	Dai, Xiaoqin(daixq@igsnrr.ac.cn)
英文摘要	A 2-year field study was conducted in a double rice cropping system in southern China to examine the effect of fertilization on CH4, N2O and CO2 fluxes using static opaque chambers and gas chromatographs. Two treatments were set up including conventional fertilization with a rate of 358 kg N/ha per year in forms of compound fertilizer and urea, and a control with no fertilizer application. The results indicated that fertilization did not have a significant effect on CH4 fluxes and led to a significantly higher cumulative N2O emission in the two years of observation period. Fertilization promoted CO2 fluxes by increasing the autotrophic respiration instead of heterotrophic respiration. By combining the global warming impact of CH4, N2O and CO2, it was found that fertilization increased the area-scaled but not the yield-scaled global warming impact. These results indicated that, according to the current amount of nitrogen applied, fertilization may increase the global warming effect of paddy fields in this region. However, the appropriate dose of nitrogen fertilizer application is still a reasonable agricultural management due to the comprehensive consideration of production and environmental impacts.
WOS关键词	GREENHOUSE-GAS EMISSIONS ; SOIL RESPIRATION ; NITROUS-OXIDE ; MANAGEMENT ; METHANE ; FIELD ; NITRIFICATION ; INTENSITY ; SEASONS ; RECORD
WOS研究方向	Agriculture
语种	英语
出版者	CZECH ACADEMY AGRICULTURAL SCIENCES
WOS记录号	WOS:000465309400004
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68592]
专题	中国科学院地理科学与资源研究所
通讯作者	Dai, Xiaoqin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing, Peoples R China 2.Anhui Normal Univ, Coll Life Sci, Anhui Prov Key Lab Conservat & Exploitat Biol Res, Wuhu, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Ye,Dai, Xiaoqin,Wang, Huimin. Fertilization effects on CH4, N2O and CO2 fluxes from a subtropical double rice cropping system[J]. PLANT SOIL AND ENVIRONMENT,2019,65(4):189-197.
APA	Yuan, Ye,Dai, Xiaoqin,&Wang, Huimin.(2019).Fertilization effects on CH4, N2O and CO2 fluxes from a subtropical double rice cropping system.PLANT SOIL AND ENVIRONMENT,65(4),189-197.
MLA	Yuan, Ye,et al."Fertilization effects on CH4, N2O and CO2 fluxes from a subtropical double rice cropping system".PLANT SOIL AND ENVIRONMENT 65.4(2019):189-197.