Characteristics of rill erosion in spoil heaps under simulated inflow: A field runoff plot experiment
文献类型：期刊论文
| 作者 | Niu, Yaobin3,4; Gao, Zhaoliang4,5; Li, Yonghong4,5; Lou, Yongcai4; Zhang, Shuai4; Zhang, Letao6; Du, Jie1; Zhang, Xiang7; Luo, Ke2 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 202页码:11 |
| ISSN号 | 0167-1987 |
| 关键词 | Spoil heaps Rill morphology Hydrodynamic characteristics Soil detachment rate Loess plateau |
| DOI | 10.1016/j.still.2020.104655 |
| 通讯作者 | Gao, Zhaoliang(gzl@ms.iswc.ac.cn) |
| 英文摘要 | As newly artificial landform, soil erosion of spoil heaps severely threatens the ecological security of construction sites and their surrounding areas. Generally, rill erosion is recognized as an important process of soil erosion on spoil heaps slope. However, studies on spoil heaps rill erosion characteristics and its intrinsic mechanisms are still unclear. The objectives of this study were to investigate the rill morphological characteristics, rill flow hydraulic characteristic and dynamic mechanisms. A field runoff plot (10m long, 1m wide and 0.5m deep) was subjected to inflow simulation experiments under flour flow discharges rates (5, 9, 13 and 17 L min(-1)) and three typical slope gradients (24 degrees, 28 degrees and 32 degrees). The results showed that the rill erosion process could be divided into two stages: a rapid development stage (RDS) and a subsequent slow development stage (SDS). Among that, the rill width, rill depth, cumulative runoff yield and cumulative sediment yield in RDS average accounts for 81 %, 57 %, 29 % and 41 % of the total, respectively, which indicated that the rill depth exhibited significant contributions to spoil heaps rill erosion. The flow regimes in the RDS were turbulent, transitional and laminar flow, whereas in the SDS was transitional flow. The flow type in the RDS was supercritical flow, whereas in the SDS were supercritical flow and subcritical flow. For the whole erosion process (including two stages), the critical shear stress and the critical runoff power were 10.00 Pa and 3.22 N m(-1) s(-1), respectively. Furthermore, runoff power could be considered as the best hydrodynamic parameters to characterize the rill erosion mechanism. These results could be used to control artificial erosion caused by production and construction projects and to provide some key indicators for soil and water loss perdition in Loess Plateau of China. |
| WOS关键词 | SOIL-EROSION ; WATER EROSION ; SEDIMENT TRANSPORT ; FLOW ; DETACHMENT ; VELOCITY ; RAINFALL ; HYDRAULICS ; CONSTRUCTION ; ERODIBILITY |
| 资助项目 | National Natural Science Foundation of China[41671283] ; National Natural Science Foundation of China[41807066] ; State Key Development Program for Basic Research of China[2016YFC0501706-02] ; Award for Excellent Doctoral to work in Shanxi[SXYBKY2019029] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000536900200009 |
| 资助机构 | National Natural Science Foundation of China ; State Key Development Program for Basic Research of China ; Award for Excellent Doctoral to work in Shanxi |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/159552]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Zhaoliang |
| 作者单位 | 1.Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100083, Peoples R China 2.YRCC, Soil & Water Conservat Control Bur, Jin Shan Meng Adjacent Area, Yulin 719000, Shaanxi, Peoples R China 3.Shanxi Agr Univ, Coll Resources & Environm, Taigu 030801, Shanxi, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 6.Henan Univ, Coll Environm & Planning, Kaifeng 475004, Peoples R China 7.Pingxiang Univ, Pingxiang 337000, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Yaobin,Gao, Zhaoliang,Li, Yonghong,et al. Characteristics of rill erosion in spoil heaps under simulated inflow: A field runoff plot experiment[J]. SOIL & TILLAGE RESEARCH,2020,202:11. |
| APA | Niu, Yaobin.,Gao, Zhaoliang.,Li, Yonghong.,Lou, Yongcai.,Zhang, Shuai.,...&Luo, Ke.(2020).Characteristics of rill erosion in spoil heaps under simulated inflow: A field runoff plot experiment.SOIL & TILLAGE RESEARCH,202,11. |
| MLA | Niu, Yaobin,et al."Characteristics of rill erosion in spoil heaps under simulated inflow: A field runoff plot experiment".SOIL & TILLAGE RESEARCH 202(2020):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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