Effects of nitrogen fertilizer on CH4 emission from rice fields: multi-site field observations

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	Effects of nitrogen fertilizer on CH4 emission from rice fields: multi-site field observations
	Xie, BH; Zheng, XH; Zhou, ZX; Gu, JX; Zhu, B; Chen, X; Shi, Y; Wang, YY; Zhao, ZC; Liu, CY
刊名	PLANT AND SOIL
	2010
卷号	326 期号:1-2 页码:393-401
关键词	Ammonium-based Inventory Biomass Oxidation
ISSN号	0032-079X
英文摘要	There is an ongoing discussion of the possible effects of nitrogen (N) application on methane (CH4) emission from rice fields. However, the Intergovernmental Panel on Climate Change (IPCC) methodologies for estimating the national inventory of CH4 emission from paddy rice production do not consider the effects of N addition. To assess the lack of knowledge about N addition effects on inventory estimates, we recently launched a multi-site observation campaign in major rice cultivation regions of China. The observations showed that, across various climate zones, the application of ammonium-based fertilizers at the commonly-adopted levels for fields in China (150 or 250 kg N ha(-1)) generally inhibited accumulative CH4 emission during rice season (by 28-30% on average) as compared to no N addition. An increase in application from the moderate level of 150 kg N ha(-1) to the high rate of 250 kg N ha(-1) did not significantly modify CH4 emission. Our results suggest that disregarding the effect of N fertilization by the IPCC methodologies may not significantly bias CH4 inventory estimates of China. In regions with much lower N addition levels, however, disregarding the effect of N fertilization may result in the underestimation of regional CH4 emission, since these emissions were mainly derived from studies in regions with relatively high N addition rates.
学科主题	Agronomy ; Plant Sciences ; Soil Science
语种	英语
WOS记录号	WOS:000272850200031
资助机构	Chinese Academy of Sciences [KZCX2-yw-204, KZCX3SW- 440]; National Science Foundation of China [40425010]; European Union [IP 017841]; Helmholtz-CAS Jointed Laboratory ENTRANCE
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/53979]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Zheng, XH, Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Bounder Layer Phys & Atmo, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xie, BH,Zheng, XH,Zhou, ZX,et al. Effects of nitrogen fertilizer on CH4 emission from rice fields: multi-site field observations[J]. PLANT AND SOIL,2010,326(1-2):393-401.
APA	Xie, BH.,Zheng, XH.,Zhou, ZX.,Gu, JX.,Zhu, B.,...&Zheng, XH, Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Bounder Layer Phys & Atmo, Beijing 100029, Peoples R China.(2010).Effects of nitrogen fertilizer on CH4 emission from rice fields: multi-site field observations.PLANT AND SOIL,326(1-2),393-401.
MLA	Xie, BH,et al."Effects of nitrogen fertilizer on CH4 emission from rice fields: multi-site field observations".PLANT AND SOIL 326.1-2(2010):393-401.