Assessing soil erosion rates on manually-tilled hillslopes in the Sichuan Hilly Basin using Cs-137 and Pb-210(ex) measurements
文献类型：SCI/SSCI论文
| 作者 | Zheng J. J. ; He X. B. ; Walling D. ; Zhang X. B. ; Flanagan D. ; Qi Y. Q. |
| 发表日期 | 2007 |
| 关键词 | Cs-137 hoe tillage Pb-210(ex) purple soil soil erosion tillage erosion cultivated land agricultural land loess plateau china translocation radionuclides cesium-137 redistribution prediction |
| 英文摘要 | Purple soils are widely distributed in the Sichuan Hilly Basin and are highly susceptible to erosion, especially on the cultivated slopes. Quantitative assessment of the erosion rates is, however, difficult due to small size of the plots of the manually-tilled land, the complex land use, and steep hillslopes. Cs-137 and Pb-210, (excess Pb-210) tracing techniques were used to investigate the spatial pattern of soil erosion rates associated with slope-land under hoe tillage in Neijiang of the Sichuan Hilly Basin. The Cs-137 and (210)Pbex inventories at the top of the cultivated slope were extremely low, and the highest inventories were found at the bottom of the cultivated slope. By combining the erosion rates estimates provided by both Cs-137 and (210)Pbex measurements, the weighted mean net soil loss from the study slope was estimated to be 3 100 t km(-2) year(-1), which was significantly less than 6 930 t km(-2) year(-1) reported for runoff plots on a 10 degrees cultivated slope at the Suining Station of Soil Erosion. The spatial pattern of soil erosion rates on the steep agricultural land showed that hoe tillage played an important role in soil redistribution along the slope. Also, traditional farming practices had a significant role in reducing soil loss, leading to a lower net erosion rate for the field. |
| 出处 | Pedosphere |
| 卷 | 17 |
| 期 | 3 |
| 页 | 273-283 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0160 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22265]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zheng J. J.,He X. B.,Walling D.,et al. Assessing soil erosion rates on manually-tilled hillslopes in the Sichuan Hilly Basin using Cs-137 and Pb-210(ex) measurements. 2007. |
入库方式： OAI收割
来源：地理科学与资源研究所
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