Use of Cs-137 and Pb-210 radionuclides as tracers to investigate sediment sources in a small catchment of the Hilly Sichuan Basin, China
文献类型：会议论文
| 作者 | Zhang Xinbao1 ; He Xiubing1; Wen Anbang1; Walling D.E.2; Feng Mingyi3; Zou Xiang1
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| 出版日期 | 2004 |
| 会议日期 | OCT 18-21, 2004 |
| 会议地点 | Yichang |
| 关键词 | sediment source relative contribution (CS)-C-137 Pb-210 Hilly Sichuan Basin |
| 页码 | 2643-2648 |
| 国家 | PEOPLES R CHINA |
| 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 Sichuan 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 Bq(.)kg(-1) 0.40 Bq(.)kg(-1) and 162.01 Bq(.)kg(-1) +/- 3.86 Bq(.)kg(-1), 4.01 Bq(.)kg(-1) +/- 0.31 Bq(.)kg(-1) and 70.96 Bq(.)kg(-1) +/- 2.65 Bq(.)kg(-1), and 0 and 15.12 Bq(.)kg(-1) +/- 1.22 Bq(.)kg(-1), respectively, while those concentrations in the recently deposited sediments in the reservoir were 3.06 Bq(.)kg(-1) +/- 0.23 Bq(.)kg(-1) and 72.66 Bq(.)kg(-1) +/- 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 t(.)km(-2.)a(-1) and 886 t(.)km(-2.)a(-1), respectively. |
| 源文献作者 | Hu, C ; Tan, Y ; Zhou, Z ; Shao, X ; Liu, C |
| 产权排序 | 1 |
| 会议录 | PROCEEDINGS OF THE NINTH INTERNATIONAL SYMPOSIUM ON RIVER SEDIMENTATION, VOLS 1-4
 |
| 会议录出版者 | TSINGHUA UNIVERSITY PRESS |
| 会议录出版地 | BEIJING |
| 语种 | 英语 |
| ISBN号 | 7-302-09684-8 |
| WOS记录号 | WOS:000226799100385 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33527]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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 |
| 作者单位 | 1.CAS, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; 2.Department of Geography and Archaeology, Exeter University, Exeter EX 44RJ, UK; 3.China West Normal University, Nanchong 637002, China |
| 推荐引用方式 GB/T 7714 | Zhang Xinbao,He Xiubing,Wen Anbang,et al. Use of Cs-137 and Pb-210 radionuclides as tracers to investigate sediment sources in a small catchment of the Hilly Sichuan Basin, China[C]. 见:. Yichang. OCT 18-21, 2004. |
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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