Temporal variation of 7Be fallout and its inventory in purple soil in the Three Gorges Reservoir region, China
文献类型：期刊论文
| 作者 | Zhang XB(张信宝) ; Shi ZL(史忠林); Yan DC(严冬春); Wen AB(文安邦)
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| 刊名 | Journal of Radioanalytical and Nuclear Chemistry
 |
| 出版日期 | 2011 |
| 卷号 | 288期号:3页码:671-676 |
| 关键词 | 7Be Deposition flux Purple soil Erosion Three Gorges Reservoir region China |
| 通讯作者 | 文安邦 |
| 合作状况 | 国内 |
| 英文摘要 | The deposition flux of 7Be was measured in the range from 0.4 to 5.2 Bq m-2 d-1, with a mean value of 2.6 Bq m-2 d-1, during the period of May 31, 2009–May 31, 2010 in the Three Gorges Reservoir region, China. The low annual deposition flux of 7Be was probably due to the adsorption of 7Be within high altitude clouds and the Qinling-Daba Mountain’s barrier and blocking effects on the cold air during winter months. There was a seasonal trend for 7Be deposition, showing a spring maximum and winter minimum, which may be attributed to the seasonal folding of tropopause in spring and little rainfall amount in winter. A strong positive correlation (R2 = 0.67) between 7Be deposition flux and rainfall was observed. The depth distribution of 7Be in undisturbed purple soil profiles suggested that the nuclide was mainly distributed within the top 20.0 kg m-2 (*1.5 cm) of soil in depth and the maximum concentration occurred at a depth of 3.0 kg m-2 (*0.2 cm), then the concentration declined quickly and exponentially with depth. The seasonal inventories of 7Be in soils were consistent with the values calculated from the atmospheric fluxes, which shows a great potential for using 7Be as a tracer to assess soil redistribution in purple soil areas of China |
| 学科主题 | 水土保持学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-12-13 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4500]  |
| 专题 | 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 科技与合作处 |
| 推荐引用方式 GB/T 7714 | Zhang XB,Shi ZL,Yan DC,et al. Temporal variation of 7Be fallout and its inventory in purple soil in the Three Gorges Reservoir region, China[J]. Journal of Radioanalytical and Nuclear Chemistry,2011,288(3):671-676. |
| APA | Zhang XB,Shi ZL,Yan DC,&Wen AB.(2011).Temporal variation of 7Be fallout and its inventory in purple soil in the Three Gorges Reservoir region, China.Journal of Radioanalytical and Nuclear Chemistry,288(3),671-676. |
| MLA | Zhang XB,et al."Temporal variation of 7Be fallout and its inventory in purple soil in the Three Gorges Reservoir region, China".Journal of Radioanalytical and Nuclear Chemistry 288.3(2011):671-676. |
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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