Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China
文献类型：期刊论文
| 作者 | Pang, Junzhu; Wang, Xiaoke; Mu, Yujing; Ouyang, Zhiyun; Liu, Wenzhao |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2009-11 |
| 卷号 | 46期号:1页码:37-44 |
| 关键词 | Nitrous oxide emission Apple orchard soil Nitrogen fertilizer Emission factor China Loess Plateau |
| 中文摘要 | Nitrous oxide (N(2)O) fluxes from an apple orchard soil in the semiarid Loess Plateau of China were measured using static chambers from September 2007 to September 2008. In this study, three sites were selected at distance of 2.5 m (D 2.5), 1.5 m (D 1.5), and 0.5 m (D 0.5) from the apple tree row. Nitrous oxide fluxes followed seasonal pattern, with high N(2)O emission rates occurring in the hot-humid summer and low rates in the cold-dry winter. Pulses of N(2)O emissions occurred after nitrogen fertilizer application, summer rainfall events, and during freeze-thaw cycles. Annual average N(2)O emission rates were the highest at D 0.5 site (48.2 +/- A 39.9 A mu g N(2)O m(-2) h(-1)), the lowest at D 2.5 site (31.9 +/- A 18.2 A mu g N(2)O m(-2) h(-1)), and intermediate at D1.5 site (36.8 +/- A 32.2 A mu g N(2)O m(-2) h(-1)), suggesting that N(2)O emissions from the apple orchard soil increased when the chamber location was closer to the apple tree row. This may be due to the fertilization close to roots in hot and humid season. Over one third (37.1%) of the annual N(2)O emission occurred in the summer. Annual N(2)O emissions from the apple orchard soil averaged to 3.22 kg N(2)O ha(-1) year(-1). Annual emission factor of the apple orchard from the applied fertilizer (uncorrected for background emission) was 0.658%. This value was nearly a half (53%) of the default value provided by the Intergovernmental Panel on Climate Change for the application of synthetic fertilizers to cropland (1.25%). Therefore, the amount of N(2)O emissions from the semiarid apple orchard soil could be largely overestimated if no regional-specific factor is used. |
| WOS记录号 | WOS:000271527400004 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21398]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Pang, Junzhu,Wang, Xiaoke,Mu, Yujing,et al. Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China[J]. BIOLOGY AND FERTILITY OF SOILS,2009,46(1):37-44. |
| APA | Pang, Junzhu,Wang, Xiaoke,Mu, Yujing,Ouyang, Zhiyun,&Liu, Wenzhao.(2009).Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China.BIOLOGY AND FERTILITY OF SOILS,46(1),37-44. |
| MLA | Pang, Junzhu,et al."Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China".BIOLOGY AND FERTILITY OF SOILS 46.1(2009):37-44. |
入库方式： OAI收割
来源：生态环境研究中心
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