Nitrous oxide emission from upland crops and crop-soil systems in northeastern China
文献类型：期刊论文
| 作者 | Chen, X ; Cabrera, ML ; Zhang, L ; Wu, J ; Shi, Y ; Yu, WT ; Shen, SM |
| 刊名 | NUTRIENT CYCLING IN AGROECOSYSTEMS
 |
| 出版日期 | 2002 |
| 卷号 | 62期号:3页码:241-247 |
| 关键词 | fertilization gaseous losses maize nitrogen soybean |
| ISSN号 | 1385-1314 |
| 通讯作者 | Chen, X, Chinese Acad Sci, Inst Appl Ecol, Shenyang Expt Stn Ecol, Shenyang 110015, Peoples R China |
| 中文摘要 | Although it is known that crops can directly emit N2O, their contribution to the total N2O emission from crop-soil systems under field conditions is not well understood. This study was conducted to study the contribution of crops to total N2O emission from soybean-soil and maize-soil systems in northeastern China. The effects of N fertilization on N2O emission and NO3--N concentration in plants were also studied. The emission from crop-soil systems was measured with the closed chamber method, whereas the direct emission from crops was measured with the soil surface-sealed method. The addition of fertilizer N significantly increased the NO3--N concentration in crops and enhanced the N2O emission from crop-soil systems and from crops alone. The amount of N2O emitted directly from soybean plants accounted for 6 to 11% of the total soybean-soil emission. Similarly, the amount of N2O emitted directly from maize plants accounted for 8.5 to 16% of the total maize-soil emission. The proportion of the applied N lost through direct N2O emission from plants ranged from 0.19 to 0.34%, whereas the proportion of the applied N lost through N2O emission from the crop-soil system ranged from 1.1 to 1.9%. These results suggest that the use of chambers that do not include plants may lead to an underestimation of the total N2O emission from crop-soil systems. |
| 学科主题 | Soil Science |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000179389300005 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55439]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, X,Cabrera, ML,Zhang, L,et al. Nitrous oxide emission from upland crops and crop-soil systems in northeastern China[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2002,62(3):241-247. |
| APA | Chen, X.,Cabrera, ML.,Zhang, L.,Wu, J.,Shi, Y.,...&Shen, SM.(2002).Nitrous oxide emission from upland crops and crop-soil systems in northeastern China.NUTRIENT CYCLING IN AGROECOSYSTEMS,62(3),241-247. |
| MLA | Chen, X,et al."Nitrous oxide emission from upland crops and crop-soil systems in northeastern China".NUTRIENT CYCLING IN AGROECOSYSTEMS 62.3(2002):241-247. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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