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Nitric oxide emissions from conventional vegetable fields in southeastern China

文献类型：期刊论文

作者Mei, Baoling1; Zheng, Xunhua1; Xie, Baohua1; Dong, Haibo1; Zhou, Zaixing1; Wang, Rui1; Deng, Jia1; Cui, Feng1; Tong, Huajun1; Zhu, Jianguo2
刊名ATMOSPHERIC ENVIRONMENT
出版日期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
DOI10.1016/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
WOS记录号WOS:000266529400011
出版者PERGAMON-ELSEVIER SCIENCE LTD
URI标识http://www.irgrid.ac.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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来源：南京土壤研究所

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