The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season
	Dong, Zhixin1,2 ; Zhu, Bo1,2 ; Zeng, Zebin1,3
刊名	ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
	2014-11-01
卷号	16 期号:11 页码:2545-2553
关键词	NITROUS-OXIDE EMISSIONS GREENHOUSE-GAS EMISSIONS NORTH CHINA PLAIN FILLED PORE-SPACE ORGANIC FERTILIZATION FIELD EXPERIMENTS SOIL RESIDUE NITRATE FLUXES
ISSN号	2050-7887
通讯作者	Bo Zhu
英文摘要	The effects of nitrogen fertilization regimes on N2O emissions and denitrification rates were evaluated by in situ field incubation experiments with intact soil cores and the acetylene block technique. Intact soil cores were collected from long-term field experiments involving several N fertilization regimes, including single synthetic N fertilizer (N), organic manure (OM), synthetic N, P. K fertilizer (NPK), organic manure with synthetic fertilizer (OMNPK), crop straw residue with synthetic fertilizer (SRNPK) and no nitrogen fertilizer (NF). N2O was sampled from the head space of the cylinders to determine the daily N2O emission and denitrification rate. The results showed that the N2O emissions were greatly influenced by the specific fertilization regime even when the same nitrogen rate was applied. The mean N2O emissions and denitrification rates from the N, OM, NPK, OMNPK and SRNPK treatment were 2.22, 2.66, 1.94, 2.53, 1.67 and 4.63, 5.96, 4.15, 5.41, 3.65 mg per m(2) per day, respectively. The application of OM significantly increased the N2O emission and denitrification compared to the application of NPK because of the high soil organic carbon (SOC) content of OM. However, SRNPK increased the SOC content and decreased the N2O emissions significantly compared to the OM and OMNPK treatments because the addition of crop straw with a high C/N ratio to soil with a low inorganic N content induced N immobilization. The contents of soil nitrate and ammonium were the main limiting factors for N2O emissions in a positive regression as follows: Ln (N2O) = 2.511 + 1.258 x Ln ([NH4+] + [NO3-). Crop straw residue combined with synthetic fertilizer is recommended as an optimal strategy for mitigating N2O emissions and denitrification-induced N loss in rain-fed croplands.
WOS标题词	Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
类目[WOS]	Chemistry, Analytical ; Environmental Sciences
研究领域[WOS]	Chemistry ; Environmental Sciences & Ecology
关键词[WOS]	NITROUS-OXIDE EMISSIONS ; GREENHOUSE-GAS EMISSIONS ; NORTH CHINA PLAIN ; FILLED PORE-SPACE ; ORGANIC FERTILIZATION ; FIELD EXPERIMENTS ; SOIL ; RESIDUE ; NITRATE ; FLUXES
收录类别	SCI
原文出处	http://pubs.rsc.org/en/Content/ArticleLanding/2014/EM/C4EM00185K#!divAbstract
语种	英语
WOS记录号	WOS:000344131200009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/7989]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Sichuan Agr Univ, Coll Resources & Environm, Chengdu 611130, Peoples R China
推荐引用方式 GB/T 7714	Dong, Zhixin,Zhu, Bo,Zeng, Zebin. The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2014,16(11):2545-2553.
APA	Dong, Zhixin,Zhu, Bo,&Zeng, Zebin.(2014).The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,16(11),2545-2553.
MLA	Dong, Zhixin,et al."The influence of N-fertilization regimes on N2O emissions and denitrification in rain-fed cropland during the rainy season".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 16.11(2014):2545-2553.