Assessment of sediment yield in a small karst catchment by using Cs-137 tracer technique
文献类型：期刊论文
| 作者 | Yan, Dong-chun1,2 ; Zhang, Xin-bao1; Wen, An-bang1; He, Xiu-bin1; Long, Yi1
|
| 刊名 | INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
 |
| 出版日期 | 2012-12-01 |
| 卷号 | 27期号:4页码:547-554 |
| 关键词 | Cs-137 Sediment deposition Sediment yield Karst depression Southwest China |
| ISSN号 | 1001-6279 |
| 通讯作者 | Yan, Dong-chun |
| 英文摘要 | There is very thin soil layer in karst rocky desertification areas in Southwest China, sediment deposition and sediment yield in the karst area affects the development of vegetation greatly. In the present study, the Cs-137 technique was used to assess the rate of sediment deposition and sediment yield in a small karst catchment. The Cs-137 inventory within the depression varied between 800 m(-2) and 2,200 Bq m(-2), with the mean value of 1,500.1 Bq m(-2). The Cs-137 reference inventory at a nearby reference site was 805.9 Bq m(-2). It could be inferred to that sediment deposition had occurred in the catchment. The mean depth of sediments deposition in the depression was 6 cm and the deposition rate was approximately 0.13 cm yr(-1). The analysis of the topographic characteristics of the catchment revealed that the sediment deposition occurred mainly at the lower part of the small catchment. Although, there was a sinkhole in the depression, little sediment had drained out with runoff through the sinkhole, because the local people built ridges around the sinkholes for storing water. According to this, sediment yield rate in the small catchment was estimated to be approximately 19.25 to 27.5 t km(-2) yr(-1), and the extremely low sediment yield was maybe the main obstacle to vegetation restoration in karst rocky desertification areas. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Water Resources |
| 关键词[WOS] | OVERBANK SEDIMENTATION ; ACCUMULATION RATES ; FALLOUT CESIUM-137 ; DEPOSITION RATES ; SOUTHWEST CHINA ; DRAINAGE-BASIN ; SOIL-EROSION ; RESERVOIR ; RIVER ; LAKE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000312894800012 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9895]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Dong-chun,Zhang, Xin-bao,Wen, An-bang,et al. Assessment of sediment yield in a small karst catchment by using Cs-137 tracer technique[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2012,27(4):547-554. |
| APA | Yan, Dong-chun,Zhang, Xin-bao,Wen, An-bang,He, Xiu-bin,&Long, Yi.(2012).Assessment of sediment yield in a small karst catchment by using Cs-137 tracer technique.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,27(4),547-554. |
| MLA | Yan, Dong-chun,et al."Assessment of sediment yield in a small karst catchment by using Cs-137 tracer technique".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 27.4(2012):547-554. |
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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