Effects of multiple factors on particle size selectivity under artificial extreme rainfall events on simulated Gobi surface
文献类型：期刊论文
| 作者 | Sun, Liying1,2; Dai, Qingyuan1,2; Feng, Ziheng1,2 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2023-12-27 |
| 卷号 | 13期号:1页码:13 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-023-50136-x |
| 通讯作者 | Sun, Liying(sunliying@igsnrr.ac.cn) |
| 英文摘要 | Understanding multiple-factor effects on particle size selectivity by extreme rainfall events in Ala-Shan Gobi desert is of great significance for better estimation of potential Asian dust emission sources. Artificial rainfall simulation experiments were used to investigate the particle size selectivity characteristics by extreme rainfall events under different rainfall intensities (20 mm h(-1) and 40 mm h(-1)), slope gradients (3 degrees and 15 degrees) and gravel coverages (0, 30%, and 60%). Moreover, the relations of clay content (Clc), silt content (Sic), fine particle (< 50 mu m) content (Fic) and enrichment ratio of fine particles (ER<50) with multiple factors were regressed and validated. Results show that rainfall intensity significantly (P < 0.05) affect runoff and sediment yield processes, but slope gradient was a dominant factor that changed particle size distribution (PSD). The selectivity of fine particles was higher at low rainfall intensity (20 mm h(-1)), gentle slope (3 degrees) and moderate gravel coverage (30%), with ER<50 reaching 6.14, which dominate the potential Asian dust emission sources. The interaction were discussed and classified into 'Synergy' and 'Trade-off'. Clc and Fic showed negative exponential relationship with rainfall intensity and slope gradient, but positive exponential relationship with gravel coverage. While Sic and ER<50 showed negative power function relationship with rainfall intensity, slope gradient and gravel coverage. These findings could help to understand the effects of multiple factors on potential sources of Asian dust emission under extreme rainfall events in Gobi region of northwestern China and provide basic science reference for the prediction of dust emission in this region. |
| WOS关键词 | SOIL-EROSION PROCESSES ; INTERRILL EROSION ; TRANSPORT ; SEDIMENT ; DESERT ; VARIABILITY ; PLATEAU ; GRAVEL |
| 资助项目 | National Natural Science Foundation of China ; [41930640] ; [41977069] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | NATURE PORTFOLIO |
| WOS记录号 | WOS:001134102800073 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/202059]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Sun, Liying |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Liying,Dai, Qingyuan,Feng, Ziheng. Effects of multiple factors on particle size selectivity under artificial extreme rainfall events on simulated Gobi surface[J]. SCIENTIFIC REPORTS,2023,13(1):13. |
| APA | Sun, Liying,Dai, Qingyuan,&Feng, Ziheng.(2023).Effects of multiple factors on particle size selectivity under artificial extreme rainfall events on simulated Gobi surface.SCIENTIFIC REPORTS,13(1),13. |
| MLA | Sun, Liying,et al."Effects of multiple factors on particle size selectivity under artificial extreme rainfall events on simulated Gobi surface".SCIENTIFIC REPORTS 13.1(2023):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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