Beryllium-7 in vegetation, soil, sediment and runoff on the northern Loess Plateau
文献类型：期刊论文
| 作者 | Yang, MY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shannxi, Peoples R China.; Fengbao Zhang2; Mingyi Yang2; Jiaqiong Zhang2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2018 |
| 卷号 | 626页码:842-850 |
| 关键词 | Vegetation Be-7 Sediment Runoff Plot Loess Plateau |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2018.01.156 |
| 文献子类 | Article |
| 英文摘要 | Beryllium-7 (Be-7), as a potentially powerful tracer, was widely used to document soil redistribution and identify sediment sources in recent decades, but the quantity and distribution of Be-7 in vegetation, soil, sediment and runoff on the Loess Plateau have not been fully described. In this study, we measured Be-7 in vegetation, soil, sediment and runoff on the northern Loess Plateau of China and analyzed its variations during the rainy season to assess the potential of the Be-7 method for documenting soil redistribution and identifying sediment sources in a wide range of environments. The results indicated that vegetation, soil, and sediment samples showed higher levels and larger variations of Be-7 activities during the rainy season. The drying plants showed Be-7 mass activity that was more than three times higher than that of living and semi-decomposed plants. Be-7 mass activity in plants and sediment was much higher than in the soil. Be-7 activity in runoff water with a few submicron suspended particles varied slightly and was far lower than in plant, soil and sediment samples. The cumulative precipitation generally determined Be-7 inventory held by plants and soil. An inverse relationship was found between the Be-7 mass activity in sediment and the sediment amount. Globally, approximate 30% of the total Be-7 was held by plants in both the herbaceous and subshrub plots. Approximate 10% of the total Be-7 was lost with sediment from the bare plot. A very small proportion of Be-7 (1.18%-3.20%) was lost with runoff, and the vast majority of Be-7 was retained in the slope soil at the end of rainy season. Vegetation cover and soil erosion significantly affected the spatial distribution and variations of the Be-7 inventory in soil, providing a necessary condition for the development of a Be-7 method to document soil erosion on slopes with vegetation. (C) 2018 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| 出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 语种 | 英语 |
| WOS记录号 | WOS:000428194000085 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Key Research and Development Program of China [2016YFC0402406] ; National Key Research and Development Program of China [2016YFC0402406] ; National Natural Science Foundation of China [41571130082, 41401314, 41671281] ; National Natural Science Foundation of China [41571130082, 41401314, 41671281] ; National Key Research and Development Program of China [2016YFC0402406] ; National Key Research and Development Program of China [2016YFC0402406] ; National Natural Science Foundation of China [41571130082, 41401314, 41671281] ; National Natural Science Foundation of China [41571130082, 41401314, 41671281] |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/8248]  |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Yang, MY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shannxi, Peoples R China. |
| 作者单位 | 1.CAS & MWR, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shannxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, MY ,Fengbao Zhang,Mingyi Yang,et al. Beryllium-7 in vegetation, soil, sediment and runoff on the northern Loess Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,626:842-850. |
| APA | Yang, MY ,Fengbao Zhang,Mingyi Yang,&Jiaqiong Zhang.(2018).Beryllium-7 in vegetation, soil, sediment and runoff on the northern Loess Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,626,842-850. |
| MLA | Yang, MY ,et al."Beryllium-7 in vegetation, soil, sediment and runoff on the northern Loess Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 626(2018):842-850. |
入库方式： OAI收割
来源：水土保持研究所
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