Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients
文献类型：期刊论文
| 作者 | Liu, Quan1,2,3; Zhu, Bo1,3 ; Tang, Jialiang1,3; Huang, Wenjun2; Zhang, Xifeng1,3
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| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 出版日期 | 2017-11-01 |
| 卷号 | 81期号:6页码:1517-1525 |
| ISSN号 | 0361-5995 |
| DOI | 10.2136/sssaj2017.03.0085 |
| 英文摘要 | This study investigated the hydrological processes of overland flow and interflow for slope gradients of 6.5 degrees, 10, 15, 20, and 25 degrees on hillslope croplands of Regosol under natural rainfall conditions. The generation of overland flow from 6.5 degrees (control) and 10 degrees lagged 30 min behind the rainfall peaks, whereas the other investigated slope gradients were synchronized with the rainfall peaks. Moreover, the soil moisture varied (and interflow was generated) from 25 to 35% in association with increasing slope gradients (from 6.5 to 10, 15, 20, and 25 degrees). The times and peaks of sediment yields corresponded to the overland flow. The total storm runoff discharge averages for the 6.5 degrees, 10, 15, 20, and 25 degrees slope gradients were 39.9 +/- 3.1, 45.1 +/- 4.2, 48.7 +/- 2.9, 51.8 +/- 3.0, and 43.9 +/- 3.6 mm, respectively, with runoff coefficients between 47 and 61%. Interflow comprised between 83 and 91% of the total runoff. Moreover, overland flow and sediment yield discharge for the 15 and 20 degrees slope gradients exhibited significant differences (p < 0.05) from the control (6.5 degrees) and two other gradients (10 and 25 degrees). This study determined that the apparent critical slope gradient for overland flow and sediment yield was between 15 and 20 degrees. Moreover, the relationship of sediment loss flux and the discharge of overland flow can be simulated by the power function and the S function. However, the results showed that slope gradients do not significantly impact interflow, which could be influenced by soil moisture prior to the occurrence of rain. |
| 语种 | 英语 |
| 出版者 | SOIL SCI SOC AMER |
| WOS记录号 | WOS:000419646100025 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20746]  |
| 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 |
| 通讯作者 | Zhu, Bo; Tang, Jialiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Mianyang Normal Univ, Mianyang 621000, Peoples R China 3.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Quan,Zhu, Bo,Tang, Jialiang,et al. Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2017,81(6):1517-1525. |
| APA | Liu, Quan,Zhu, Bo,Tang, Jialiang,Huang, Wenjun,&Zhang, Xifeng.(2017).Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,81(6),1517-1525. |
| MLA | Liu, Quan,et al."Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 81.6(2017):1517-1525. |
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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