The Influence of Short-Term Heavy Rainfall on Hydraulic Characteristics and Rill Formation in the Yuanmou Dry-Hot Valley
文献类型：期刊论文
| 作者 | Luo, Jun1,2,4; Ma, Xueyang3; Wang, Lei1,2; Bin Zhang1,2; Yang, Xiao1; Yue, Tianxiang4 |
| 刊名 | INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
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| 出版日期 | 2022-11-01 |
| 卷号 | 19期号:22页码:21 |
| 关键词 | washout duration rill development flow hydraulic characteristics runoff development short-term heavy rainfall |
| DOI | 10.3390/ijerph192215232 |
| 通讯作者 | Ma, Xueyang(xyma2018@cwnu.edu.cn) |
| 英文摘要 | Rill erosion is one of the major environmental problems in the world; it is an important factor with regard to land degradation and has a serious impact on production and daily life in the region. The widely distributed Yuanmou group stratum promotes the development of rill erosion, whereby the strong time-concentrated rainfall and the alternating arid-humid climate prepare the ground for the development of rills in soils. Therefore, a study of the processes of slope rill erosion was carried out, and a gravel-soil slope in the Yuanmou dry-hot valley was chosen to simulate short-term heavy rainfall (25 mm/h) (No. 1 plot) and moderate rainfall (15 mm/h) (No. 2 plot), to study the erosion processes of soil and the dynamic characteristics of runoff involved in erosion. The study results showed that the width of runoff was significantly different between the two plots, while the depth of runoff was not significantly different. During the rill formation process, the width of the two plots first decreased and then increased with increasing washout duration, while its depth did not change significantly. Flow was the key factor in determining the hydraulic characteristics of runoff, and it had a significant or extremely significant positive correlation with hydraulic characteristics parameters, except in the case of Fr (Froude number) (r = 0.039). The total sediment content (CS) of plot No. 1 (0.158 g/cm(3)) was significantly different from that of plot No. 2 (0.153 g/cm(3)), and both CSs in the two plots decreased with increasing washout duration. The CS had an extremely significant negative correlation with tau (runoff shear force) (r = -0.863 **) and DW-f (Darcy-Weisbach drag coefficient) (r = -0.863 **) and a significant negative correlation with Re (Reynolds number) (r = -0.735 *) in the short-term heavy rainfall experiment, while the CS had a significant positive correlation with V (velocity) (r = 0.814 *), R (hydraulic radius) (r = 0.811 *) and P (unit stream power) (r = 0.811 *) in the moderate rainfall experiment. The results of this study will help guide further examination of the processes involved in the dynamic mechanisms of rill erosion on slopes under short-term heavy rainfall conditions. |
| WOS关键词 | SOIL-EROSION ; JINSHA RIVER ; SEDIMENT YIELD ; BLACK SOIL ; RUNOFF ; MODEL ; CHINA ; SLOPE ; FLOW ; INFLOW |
| 资助项目 | Research Startup Project of ChinaWest Normal University[18Q020] ; Research Startup Project of ChinaWest Normal University[18Q033] ; National Natural Science Foundation of China[41971015] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000887313900001 |
| 资助机构 | Research Startup Project of ChinaWest Normal University ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187388]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma, Xueyang |
| 作者单位 | 1.China West Normal Univ, Sch Geog Sci, Nanchong 637009, Peoples R China 2.China West Normal Univ, Sichuan Prov Engn Lab Monitoring & Control Soil E, Nanchong 637009, Peoples R China 3.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Jun,Ma, Xueyang,Wang, Lei,et al. The Influence of Short-Term Heavy Rainfall on Hydraulic Characteristics and Rill Formation in the Yuanmou Dry-Hot Valley[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2022,19(22):21. |
| APA | Luo, Jun,Ma, Xueyang,Wang, Lei,Bin Zhang,Yang, Xiao,&Yue, Tianxiang.(2022).The Influence of Short-Term Heavy Rainfall on Hydraulic Characteristics and Rill Formation in the Yuanmou Dry-Hot Valley.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,19(22),21. |
| MLA | Luo, Jun,et al."The Influence of Short-Term Heavy Rainfall on Hydraulic Characteristics and Rill Formation in the Yuanmou Dry-Hot Valley".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 19.22(2022):21. |
入库方式： OAI收割
来源：地理科学与资源研究所
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