Short-term morphological evolution of an ephemeral gully in the Dry-hot Valley of Southwest China
文献类型：期刊论文
| 作者 | Wang, Lei2,3,4; Zheng, Jilin2,3; Zhang, Bin2,3,4; Li, Wu2,3; Luo, Jun2,3,4; Du, Zhengping1; Deng, Qingchun2,3,4; Liu, Hui2,3,4 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2023 |
| 卷号 | 225页码:10 |
| 关键词 | Gully erosion Morphological parameters Topographic factors Laser scanning Field observation |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2022.105556 |
| 通讯作者 | Zhang, Bin(envgeo@163.com) |
| 英文摘要 | The evolution process of ephemeral gully (EG) is a major content in the study of gully erosion and geomorphology. However, due to the short duration of EG existence, field-based continuous quantitative observation information is still lacking. The objective of this study was to characterize the morphological changes and evolution mechanisms of EG under natural conditions in the Dry-hot Valley. A representative EG was observed from 2016 to 2020 by using laser scanning. Results showed that after four years, the erosion area and erosion volume increased 4.5 and 17.3 times, respectively. The length, width, and depth of the main channel continuously increased over time but the growth rates decreased. During the four monitoring periods, the average growth rates of width were 0.12, 0.26, 0.33 and 0.06 m/year, respectively; the average growth rates of depth were 0.07, 0.08, 0.03 and 0.02 m/year, respectively; and the growth rates of length were 7.58, 1.78, 2.17 and 1.17 m/year, respectively. EG morphological parameters varied at different locations of the hillslope. The crosssection area increased gradually towards downslope, especially in the middle and lower parts of the channel. However, the width-depth ratio of EG decreased gradually from upper to lower parts of the hillslope, and the values were generally greater than 1.0. In addition, the variation of sinuosity, density and tortuosity complexity were influenced by both headward and lateral erosion, which increased and then decreased. The vertical gradient increased significantly and then tends to be stable. The results of this study are helpful to enrich current studies on the evolution process of ephemeral gully. |
| WOS关键词 | RILL EROSION PROCESSES ; SOIL-EROSION ; SLOPE ; RAINFALL ; IMPACTS ; RUNOFF ; QUANTIFICATION ; DETACHMENT ; PREDICTION ; INTENSITY |
| 资助项目 | National Natural Science Foundation of China[41971015] ; Innovation Team Funds[KCXTD 2022-1] ; Doctoral Research Program of China West Normal University[20E030] ; Doctoral Research Program of China West Normal University[22kA002] ; Doctoral Research Program of China West Normal University[18Q018] ; Doctoral Research Program of China West Normal University[19E067] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000880077800003 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Innovation Team Funds ; Doctoral Research Program of China West Normal University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/186590]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Bin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.China West Normal Univ, Sichuan Prov Engn Lab Monitoring & Control Soil Er, Nanchong 637009, Peoples R China 3.China West Normal Univ, Sch Geog Sci, Nanchong 637009, Peoples R China 4.Liangshan Soil Eros & Ecol Restorat Dry Valleys Ob, Xide 616753, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Zheng, Jilin,Zhang, Bin,et al. Short-term morphological evolution of an ephemeral gully in the Dry-hot Valley of Southwest China[J]. SOIL & TILLAGE RESEARCH,2023,225:10. |
| APA | Wang, Lei.,Zheng, Jilin.,Zhang, Bin.,Li, Wu.,Luo, Jun.,...&Liu, Hui.(2023).Short-term morphological evolution of an ephemeral gully in the Dry-hot Valley of Southwest China.SOIL & TILLAGE RESEARCH,225,10. |
| MLA | Wang, Lei,et al."Short-term morphological evolution of an ephemeral gully in the Dry-hot Valley of Southwest China".SOIL & TILLAGE RESEARCH 225(2023):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。