Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China
文献类型：期刊论文
| 作者 | Zhang, XB; He, XB; Wen, AB; Walling, DE; Feng, MY; Zou, X |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2004-09 |
| 卷号 | 49期号:18页码:1953-1957 |
| 关键词 | sediment source relative contribution (CS)-C-137 Pb-210 Hilly Sichuan Basin |
| DOI | 10.1360/04wd0106 |
| 文献子类 | Article |
| 英文摘要 | Double radionuclide tracers of Cs-137 and Pb-210 were used to investigate sediment sources in the Wujia Gully, a small catchment in the Hilly Sichuam Basin in 2002. Average Cs-137 and Pb-210 concentrations in the source soils of the steep forest slopes, gentle cultivated terraces and bare slopes were 7.15+/-0.40 and 162.01+/-3.86 Bq . kg(-1), 4.01+/-0.31 and 70.96+/-2.65 Bq .kg(-1), and 0 and 15.12+/-1.22 Bq .kg(-1), respectively, while those concentrations in the recently deposited sediments in the reservoir were 3.06+/-0.23 and 72.66+/-1.61 Bq .kg(-1), respectively. By using the mixing model, the relative sediment contributions from steep forest slopes, gentle cultivated terraces and bare slopes (including channel banks) were estimated to be 18%, 46% and 36%, respectively. Cultivated terraces and bare slopes (including channel banks) were the first and the second important sediment sources in catchment. Specific sediment yield in the catchment was 642 t . km(-2) . a(-1) from the deposited sediment volume in the reservoir since 1956. Soil erosion rates for the forest slopes and cultivated terraces, which accounted for 2/3 and 1/3 of the drainage area in the catchment, were estimated to be 173 and 886 t . km(-2) . a(-1), respectively. |
| 学科主题 | Science & Technology - Other Topics |
| WOS关键词 | CULTIVATED LAND ; SOIL-EROSION |
| WOS研究方向 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000225416200012 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.ieecas.cn/handle/361006/11994]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Zhang, XB,He, XB,Wen, AB,et al. Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China[J]. CHINESE SCIENCE BULLETIN,2004,49(18):1953-1957. |
| APA | Zhang, XB,He, XB,Wen, AB,Walling, DE,Feng, MY,&Zou, X.(2004).Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China.CHINESE SCIENCE BULLETIN,49(18),1953-1957. |
| MLA | Zhang, XB,et al."Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China".CHINESE SCIENCE BULLETIN 49.18(2004):1953-1957. |
入库方式： OAI收割
来源：地球环境研究所
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