Assessment of sediment yield in a small karst catchment by using 137Cs tracer technique
文献类型：期刊论文
| 作者 | Wen, AB ; He, XB; Long, Y; Yan, DC; Zhang, XB
|
| 刊名 | International Journal of Sediment Research
 |
| 出版日期 | 2012 |
| 卷号 | 27期号:4页码:547-554 |
| 关键词 | 137Cs Sediment deposition Sediment yield Karst depression Southwest China |
| 通讯作者 | Yan, DC |
| 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 137Cs technique was used to assess the rate of sediment deposition and sediment yield in a small karst catchment. The 137Cs 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 137Cs 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-10-27 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6440]  |
| 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 | Wen, AB,He, XB,Long, Y,et al. Assessment of sediment yield in a small karst catchment by using 137Cs tracer technique[J]. International Journal of Sediment Research,2012,27(4):547-554. |
| APA | Wen, AB,He, XB,Long, Y,Yan, DC,&Zhang, XB.(2012).Assessment of sediment yield in a small karst catchment by using 137Cs tracer technique.International Journal of Sediment Research,27(4),547-554. |
| MLA | Wen, AB,et al."Assessment of sediment yield in a small karst catchment by using 137Cs 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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