IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Regulatory effects of soil properties on background N2O emissions from agricultural soils in China
Gu, Jiangxin; Zheng, Xunhua; Wang, Yinghong; Ding, Weixin; Zhu, Bo; Chen, Xin; Wang, Yiyong; Zhao, Zhichun; Shi, Yi; Zhu, Jianguo
Corresponding AuthorZheng, Xunhua
2007-06-01
Source PublicationPLANT AND SOIL
ISSN0032-079X
EISSN1573-5036
Volume295Issue:1-2Pages:53-65
SubtypeArticle
AbstractThe background nitrous oxide (N2O) emission (BNE) from agricultural soils originates from microbial nitrification and denitrification processes of soil nitrogen supplies, excluding emissions from nitrogen fertilizers applied in the current year. It is of great necessity to quantify BNE accurately at various spatial scales since BNE contributes considerably to the overall N2O emissions from croplands. Annual BNE rates across various soil/climate regions and major cropping systems of China were determined by network observations during 2002-2006 using the static chamber technique. The observations show BNE rates ranging from 0.1 to 3.67 kg N ha(-1) year(-1), with a mean of 1.35 kg N ha(-1) year(-1). Empirical functions are derived for cultivated mineral soils and describe the dependences of annual BNE rates upon soil total nitrogen (TN) content, soil organic carbon (SOC) content, bulk density (BD) and clay fraction (CF), separately or collectively. These empirical functions provide simple approaches to scale up estimated national/regional BNE inventories using available database of soil properties surveys and cropland area statistics. The national BNE of China is estimated to be 0.114-0.184 Tg (1 Tg = 10(12) g) N year(-1) in 2000, with the range being due to the use of different approaches. However, the available observations of annual BNE rates do not cover the entire range of soil properties on a national scale. Further work is needed to verify the empirical models for a complete range of soil types. In addition, a predictive empirical relationship between annual BNE rates and TN or SOC is established for cultivated mineral soil at the global scale. However, the empirical models could not accurately predict the BNE rates of cultivated organic soils. Further studies are required to understand the regulatory effects of soil properties on annual BNE rates of cultivated organic soils.
KeywordBulk Density Cropland Inventory Measurement Soil Organic Carbon Total Nitrogen
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11104-007-9260-2
WOS Subject ExtendedAgriculture ; Plant Sciences
Indexed BySCI
WOS KeywordNITROUS-OXIDE EMISSIONS ; SANDY LOAM SOIL ; GRASSLAND SOIL ; ORGANIC MANURE ; NITRIC-OXIDE ; PADDY SOILS ; FERTILIZER ; CO2 ; DENITRIFICATION ; FIELDS
Language英语
Quartile2区
TOP
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000247279100005
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10517
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Bounder Layer Phys & Atmo, Beijing 100029, Peoples R China
2.Gard Univ, Chinese Acad Sci, Beijing 100039, Peoples R China
3.Inst Soil Sci, CAS, State Key Lab Soil & Sustaian Agr, Nanjing 210008, Peoples R China
4.Inst Mt Hazards & Environm, CAS, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Gu, Jiangxin,Zheng, Xunhua,Wang, Yinghong,et al. Regulatory effects of soil properties on background N2O emissions from agricultural soils in China[J]. PLANT AND SOIL,2007,295(1-2):53-65.
APA Gu, Jiangxin.,Zheng, Xunhua.,Wang, Yinghong.,Ding, Weixin.,Zhu, Bo.,...&Zhu, Jianguo.(2007).Regulatory effects of soil properties on background N2O emissions from agricultural soils in China.PLANT AND SOIL,295(1-2),53-65.
MLA Gu, Jiangxin,et al."Regulatory effects of soil properties on background N2O emissions from agricultural soils in China".PLANT AND SOIL 295.1-2(2007):53-65.
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