MODELING SOIL DETACHMENT ON UNPAVED ROAD SURFACES ON THE LOESS PLATEAU
文献类型：期刊论文
| 作者 | Cao, L. -X.1,2,3; Zhang, K. -L.1,2; Dai, H. -L.2; Guo, Z. -L.2 |
| 刊名 | TRANSACTIONS OF THE ASABE
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 54期号:4页码:1377-1384 |
| 关键词 | Erosion model Loess Plateau Overland flow Road erosion Soil detachment |
| ISSN号 | 2151-0032 |
| 通讯作者 | Zhang, K. -L.(keli@bnu.edu.cn) |
| 英文摘要 | Soil loss from unpaved rural roads contributes largely to watershed sediment yield. A road erosion model is therefore urgently needed to evaluate road erosion production. Field flow simulation experiments were conducted on unpaved loess roads under five flow rates and three slope gradients in order to quantify road surface hydraulics and develop soil detachment prediction models. The results showed that flow velocity was highly related to flow rate but generally independent of slope gradient. The hydraulic roughness of the road surface was much less than that of cropland and was influenced significantly by relatively intensive erosion on steep slopes. Easily obtainable parameters such as flow rate and slope gradient could be used to estimate soil detachment accurately. Furthermore, power functions of chosen hydraulic parameters, (i.e., shear stress, stream power, and unit stream power) could be used to predict detachment rates. Among these parameters, flow shear stress was the best predictor. A detachment prediction model similar to that used in the WEPP model was proposed. Corresponding to the excess shear stress model in WEPP, loess road surface soil erodibility is 0.0066 s m(-1) and critical shear stress is 3.25 Pa. |
| 收录类别 | SCI |
| WOS关键词 | EROSION PREDICTION ; NORTHERN THAILAND ; OVERLAND-FLOW ; WATER EROSION ; SHALLOW FLOW ; ERODIBILITY ; SEDIMENT ; VELOCITY ; RUNOFF ; CATCHMENT |
| WOS研究方向 | Agriculture |
| WOS类目 | Agricultural Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000295662300018 |
| 出版者 | AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558877 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, K. -L. |
| 作者单位 | 1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 2.Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, L. -X.,Zhang, K. -L.,Dai, H. -L.,et al. MODELING SOIL DETACHMENT ON UNPAVED ROAD SURFACES ON THE LOESS PLATEAU[J]. TRANSACTIONS OF THE ASABE,2011,54(4):1377-1384. |
| APA | Cao, L. -X.,Zhang, K. -L.,Dai, H. -L.,&Guo, Z. -L..(2011).MODELING SOIL DETACHMENT ON UNPAVED ROAD SURFACES ON THE LOESS PLATEAU.TRANSACTIONS OF THE ASABE,54(4),1377-1384. |
| MLA | Cao, L. -X.,et al."MODELING SOIL DETACHMENT ON UNPAVED ROAD SURFACES ON THE LOESS PLATEAU".TRANSACTIONS OF THE ASABE 54.4(2011):1377-1384. |
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来源：南京土壤研究所
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