Erosion control of hedgerows under soils affected by disturbed soil accumulation in the slopes of loess plateau, China
文献类型：期刊论文
| 作者 | Yang, Shuai1,2; Gao, Zhao-liang1,3; Li, Yong-hong1,3; Niu, Yao-bin3; Su, Yuan1,2; Wang, Kai1 |
| 刊名 | CATENA
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 181页码:13 |
| ISSN号 | 0341-8162 |
| 关键词 | Disturbed soil accumulation Hedgerows Flow discharges Erosion control |
| DOI | 10.1016/j.catena.2019.104079 |
| 通讯作者 | Gao, Zhao-liang(gzl@ms.iswc.ac.cn) |
| 英文摘要 | Soil erosion on disturbed soil accumulations severely threatens the ecological stability of construction sites and their surrounding areas. This study aims to quantify the effects of hedgerows on the hydraulic characteristics of runoff and understand the mechanism of runoff and sediment reduction of hedgerow slopes. A field scouring-erosion experiment was conducted on a typical spoiled ground in "Changwu Agricultural Ecological Experimental Station" of the Loess Plateau in China to explore the effects of hedgerows on erosion control in slopes of disturbed soil accumulation. In experiments, 6 plots, which consisted of three hedgerow plots (H) and three control plots of bare slope (C), with a uniform size of 20 m, 5 in width, and 0.5 m height were constructed with excavated soil. By using three different flow discharges (35, 45, and 55 L/min) on the slope with three different gradients (24 degrees, 28 degrees and 32 degrees), some essential parameters, rate of sediment yield, sediment concentration of runoff, sediment reduction, shear stress, denudation rate, and runoff power, were measured for mechanism analysis. The hedgerows could delay runoff, which meant the initial runoff time of hedgerows obviously lagged behind the control plot about 1-8 min. The capability of runoff generating control by the hedgerows depended on the duration of discharge, which grew first and reduced later. At the later stage, the sediment concentration in the runoff of the hedgerow plots exceeded the control plots, which could be related to transformation of hedgerows between source and sink. The accumulated sediment yields of the hedgerow plots were reduced by 10-45% compared to the control plots. The relationship of the reduction of accumulated sediment yield and duration of discharge could be stated with quadratic function (P < 0.01), which indicated critical runoff time was advanced with increase of slope and flow discharge. Based on the runoff power, the soil erodibility parameter of the hedgerow slopes (3.58 g.N-1.m(-1)) was larger than that of the control slopes (2.83 g.N-1.m(-1)). Hedgerows could hinder soil transport, which not only reduced soil peeling, increased critical shear stress, and critical runoff power but also curbed rill evolution in the lower slope erosion process. The important parameters from this study would be helpful for optimal allocation of hedgerow measures, erosion control and erosion prediction model establishment on disturbed soil accumulation. |
| WOS关键词 | WATER EROSION ; GRASS HEDGES ; SEDIMENT ; RUNOFF ; SYSTEMS ; RAINFALL ; HYDRAULICS ; MANAGEMENT ; VEGETATION ; VELOCITY |
| 资助项目 | National Key Research and Development Program of the 13th Five-Year Plan[2016YFC0501706-02] ; National Natural Science Foundation of China[41671283] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000477686600031 |
| 资助机构 | National Key Research and Development Program of the 13th Five-Year Plan ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/58060]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Zhao-liang |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Shuai,Gao, Zhao-liang,Li, Yong-hong,et al. Erosion control of hedgerows under soils affected by disturbed soil accumulation in the slopes of loess plateau, China[J]. CATENA,2019,181:13. |
| APA | Yang, Shuai,Gao, Zhao-liang,Li, Yong-hong,Niu, Yao-bin,Su, Yuan,&Wang, Kai.(2019).Erosion control of hedgerows under soils affected by disturbed soil accumulation in the slopes of loess plateau, China.CATENA,181,13. |
| MLA | Yang, Shuai,et al."Erosion control of hedgerows under soils affected by disturbed soil accumulation in the slopes of loess plateau, China".CATENA 181(2019):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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