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	Nitric oxide emissions from conventional vegetable fields in southeastern China
	Mei, Baoling1; Zheng, Xunhua1; Xie, Baohua1; Dong, Haibo1; Zhou, Zaixing1; Wang, Rui1; Deng, Jia1; Cui, Feng1; Tong, Huajun1; Zhu, Jianguo2
刊名	ATMOSPHERIC ENVIRONMENT
	2009-06-01
卷号	43期号:17页码:2762-2769
关键词	Nitric oxide Vegetable Soil temperature Nitrogen fertilizer Direct emission factor Background emission
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2009.02.040
通讯作者	Zheng, Xunhua(xunhua.zheng@post.iap.ac.cn)
英文摘要	We conducted multi-year observations of nitric oxide (NO) fluxes from typical vegetable fields in the Yangtze River delta, which is located in southeastern China. Flux measurements were performed manually twice per week at intervals of 2-3 days, in both fertilized and unfertilized fields, over an investigation period of 1448 days (September 2004-August 2008). In total, twelve vegetable-growing periods and a short fallow period were investigated. On average, the NO fluxes from the fertilized plots were 21 times higher than fluxes from the unfertilized plots (p < 0.001). Peak NO emissions usually occurred soon after the addition of nitrogenous fertilizer. Peak emissions took place during about 15% of the whole investigation time, but contributed to approximately 89% of the total NO release. The annual background NO emissions (from fields without nitrogen amendment) were observed at 0.290 +/- 0.019 (standard deviation of 3 observations) kg N ha(-1). The total amounts of NO emitted during the individual vegetable-growing periods correlated positively and exponentially with the products of seasonal mean soil temperatures and nitrogen addition rates (R(2) = 0.87, p < 0.001). The mean direct NO emission factor (EF(d), the loss rate of fertilizer nitrogen via NO emissions) for the four-year period was determined to be 0.51% +/- 0.11% (standard error of 3 observations). The EF(d)s of individual vegetable-growing seasons ranged from 0.05% to 1.24%, varying linearly and positively with the products of seasonal mean soil temperatures and nitrogen addition rates (R(2) = 0.58, p < 0.01). The observed interaction of soil temperature and nitrogen addition on NO emission in seasonal totals and EF(d)s occurred in soils with moisture contents ranging from 55% to 100% water-filled pore space (mean: 79%; standard deviation: 9%). The results of this study indicate that when other conditions remain relatively stable, the direct emission factor, a key parameter for compiling an inventory of NO emissions from vegetable fields, may vary with not only soil temperature but also nitrogen addition. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	NON-WATERLOGGED PERIOD ; RICE-WHEAT ROTATION ; AGRICULTURAL FIELDS ; YANGTZE DELTA ; NO EMISSION ; N2O ; FLUXES ; SOILS ; ATMOSPHERE ; LANDS
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000266529400011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558763
专题	南京土壤研究所
通讯作者	Zheng, Xunhua
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Mei, Baoling,Zheng, Xunhua,Xie, Baohua,et al. Nitric oxide emissions from conventional vegetable fields in southeastern China[J]. ATMOSPHERIC ENVIRONMENT,2009,43(17):2762-2769.
APA	Mei, Baoling.,Zheng, Xunhua.,Xie, Baohua.,Dong, Haibo.,Zhou, Zaixing.,...&Zhu, Jianguo.(2009).Nitric oxide emissions from conventional vegetable fields in southeastern China.ATMOSPHERIC ENVIRONMENT,43(17),2762-2769.
MLA	Mei, Baoling,et al."Nitric oxide emissions from conventional vegetable fields in southeastern China".ATMOSPHERIC ENVIRONMENT 43.17(2009):2762-2769.

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