Regulatory effects of soil properties on background N2O emissions from agricultural soils in China
文献类型：期刊论文
| 作者 | Gu, Jiangxin1,2; Zheng, Xunhua3; Wang, Yinghong1; Ding, Weixin3; Zhu, Bo4 ; Chen, Xin3; Wang, Yiyong3; Zhao, Zhichun3; Shi, Yi3; Zhu, Jianguo3
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| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2007-06-01 |
| 卷号 | 295期号:1-2页码:53-65 |
| 关键词 | bulk density cropland inventory measurement soil organic carbon total nitrogen |
| ISSN号 | 0032-079X |
| 通讯作者 | Zheng, Xunhua |
| 英文摘要 | The 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Agronomy ; Plant Sciences ; Soil Science |
| 研究领域[WOS] | Agriculture ; Plant Sciences |
| 关键词[WOS] | NITROUS-OXIDE EMISSIONS ; SANDY LOAM SOIL ; GRASSLAND SOIL ; ORGANIC MANURE ; NITRIC-OXIDE ; PADDY SOILS ; FERTILIZER ; CO2 ; DENITRIFICATION ; FIELDS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247279100005 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10517]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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, 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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