A preliminary assessment of the potential for using Pb-210(ex) measurement to estimate soil redistribution rates on cultivated slopes in the Sichuan Hilly Basin of China
文献类型：期刊论文
| 作者 | Zhang, X.; Qi, Y.; Walling, D. E.; He, X. ; Wen, A.; Fu, J.
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| 刊名 | CATENA
 |
| 出版日期 | 2006-12-15 |
| 卷号 | 68期号:1页码:1-9 |
| 关键词 | soil erosion cultivated slopes radionuclides Cs-137 Pb-210(ex) Hilly Sichuan Basin |
| ISSN号 | 0341-8162 |
| 通讯作者 | X. Zhang（张信宝） |
| 合作状况 | 国际 |
| 英文摘要 | In order to assess its potential for estimating soil redistribution rates, the naturally occurring fallout radionuclide Pb-210(ex) has been used in parallel with (CS)-C-137, derived from the atmospheric testing of nuclear weapon testing in the 1950s to 1970s, to estimate rates of soil redistribution on a sloping field with traditional erosion control measures located near Jiajia Village, Jianyang County, in the Sichuan Hilly Basin of China. The local Pb-210(ex) reference inventory of 12,860 Bq m(-2) is higher than those reported for many other areas of the world and may reflect the influence of cloudy weather in preventing Pb-210 released to the atmosphere across the local region moving up into the upper troposphere, where is would be more widely dispersed. The mean Pb-210(ex) and Cs-137 inventories measured in cores collected from the upper part of the field with an average slope of 10 degrees were 8028 Bq m(-2) and 993 Bq m(-2), respectively, and the equivalent values for the lower part of the field, where the slopes are steeper (20 degrees) were 11,388 Bq m(-2) and 1299 Bq m(-2). The pattern of post-fallout Pb-210(ex) and Cs-137 redistribution on the sloping field reflects not only the effects of water erosion and redistribution by tillage, but also the local traditional practice of "Tiaoshamiantu", whereby sediment trapped in the ditches is returned to the fields by the fanner. The estimates of annual rates of soil loss provided by the Pb-210(ex) measurement are closely comparable with those derived from the Cs-137 measurements and are consistent with existing knowledge for the study area. The results obtained from this study confirm the potential for using Pb-210(ex) measurement to estimate soil erosion rates over medium-term timescale of 50-100 years. By combining the estimates of erosion rates provided by the Pb-210(ex) and Cs-137 measurements, the weighted mean net soil loss was estimated to be 48.7 t ha(-1) year(-1) from the upper subfield and 16.9 t ha(-1) year 1 from the lower subfield. These rates are considerably lower than the erosion rates obtained from runoff plot measurements in the local area. It is suggested that the traditional erosion control practices and the practice of "Tiaoshamiantu" have a significant effect in reducing soil loss and conserving valuable cultivated soil on sloping fields in the Sichuan Hilly Basin. (c) 2006 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine |
| 类目[WOS] | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
| 研究领域[WOS] | Geology ; Agriculture ; Water Resources |
| 关键词[WOS] | LOESS PLATEAU ; EROSION ; CESIUM-137 ; INVESTIGATE ; CS-137 ; MODEL ; LAND ; BE-7 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242265500001 |
| 公开日期 | 2010-11-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2542]  |
| 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） |
| 作者单位 | 1.CAS, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.CAS, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 4.Univ Exeter, Dept Geog, Exeter EX4 4RJ, Devon, England |
| 推荐引用方式 GB/T 7714 | Zhang, X.,Qi, Y.,Walling, D. E.,et al. A preliminary assessment of the potential for using Pb-210(ex) measurement to estimate soil redistribution rates on cultivated slopes in the Sichuan Hilly Basin of China[J]. CATENA,2006,68(1):1-9. |
| APA | Zhang, X.,Qi, Y.,Walling, D. E.,He, X.,Wen, A.,&Fu, J..(2006).A preliminary assessment of the potential for using Pb-210(ex) measurement to estimate soil redistribution rates on cultivated slopes in the Sichuan Hilly Basin of China.CATENA,68(1),1-9. |
| MLA | Zhang, X.,et al."A preliminary assessment of the potential for using Pb-210(ex) measurement to estimate soil redistribution rates on cultivated slopes in the Sichuan Hilly Basin of China".CATENA 68.1(2006):1-9. |
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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