Reevaluation of the aeolian sand flux from the Ulan Buh Desert into the upper Yellow River based on in situ monitoring updates
文献类型：期刊论文
| 作者 | Tian, Shimin2; Yu, Guo-An3; Jiang, Enhui2; Guo, Jianying1; Li, Zhiwei4; Wang, Yuanjian2 |
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2019-02-15 |
| 卷号 | 327页码:307-318 |
| 关键词 | Upper Yellow River Ulan Buh Desert Wind-blown sand transport Dune migration Aeolian sand flux |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2018.11.009 |
| 通讯作者 | Yu, Guo-An(yuga@igsnrr.ac.cn) |
| 英文摘要 | Aeolian sand transport into rivers is a crucial factor influencing channel sediment dynamics and fluvial processes in rivers that flow through desert areas. Few studies have examined the dynamic processes, controlling factors, and the amount of aeolian sand transported into river channels. Here, we report a case study of aeolian sand transport into in the upper reaches of the Yellow River as it flows along the eastern margin of the Ulan Buh Desert, which is a major desert in northern China. The present study is based on systematic monitoring of wind flow characteristics, aeolian sediment dynamics (saltation, creep and suspension), and the migration of typical sand dunes (mobile, semi-anchored, and anchored) from 2013 to 2016. The relationship between wind speed and wind-blown sand transport in the study area was determined. The relationship between the rate of aeolian sand transport (saltation and creep) and the wind speed 2 m above the ground surface can be depicted with a polynomial relation when the wind speed is >= 5.7 m/s, and with a power function when the wind speed is <5.7 m/s. Dune migration mainly occurred during March to May, and the dune migration rate was influenced by wind speed and other factors such as dune height and vegetation conditions. The rate of aeolian sand transport by wind-blown sand flow (particle saltation, creep, and suspension) and sand dune migration were calculated, and the annual aeolian sand transport rates into the river channel in 2013, 2014, 2015 and 2016 were estimated to be 1.47, 0.86, 0.52, and 0.50 million t/yr, respectively. These results are significantly lower than previous estimates made between the 1980s and 2000s. The decrease in sand flux may be attributed to the regional decline in wind speed over the last six decades which has caused a sharp reduction of the aeolian sand transport rate, the improved vegetation coverage in this area which has reduced the area of active and mobile dunes, and an embankment constructed adjacent to the Yellow River which has suppressed aeolian sand migration into the river channel. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS关键词 | HYPER-CONCENTRATED FLOW ; FLUVIAL INTERACTIONS ; COLORADO RIVER ; WIND-SPEED ; SEDIMENT TRANSPORT ; EOLIAN SEDIMENT ; SIMPSON DESERT ; DUNES ; SURFACE ; CHINA |
| 资助项目 | National Key Research and Development Program of China[2018YFC0407400] ; Ministry of Water Resources of China[201401084] ; National Natural Science Foundation of China (NSFC)[41571009] ; National Natural Science Foundation of China (NSFC)[51539004] ; National Natural Science Foundation of China (NSFC)[41661144030] ; National Natural Science Foundation of China (NSFC)[41330751] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000456491600021 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Key Research and Development Program of China ; Ministry of Water Resources of China ; National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/49881]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yu, Guo-An |
| 作者单位 | 1.MWR, Inst Water Resources Pastoral Area, Hohhot 010020, Peoples R China 2.Yellow River Inst Hydraul Res, Key Lab Yellow River Sediment, Zhengzhou 450003, Henan, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China 4.Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Shimin,Yu, Guo-An,Jiang, Enhui,et al. Reevaluation of the aeolian sand flux from the Ulan Buh Desert into the upper Yellow River based on in situ monitoring updates[J]. GEOMORPHOLOGY,2019,327:307-318. |
| APA | Tian, Shimin,Yu, Guo-An,Jiang, Enhui,Guo, Jianying,Li, Zhiwei,&Wang, Yuanjian.(2019).Reevaluation of the aeolian sand flux from the Ulan Buh Desert into the upper Yellow River based on in situ monitoring updates.GEOMORPHOLOGY,327,307-318. |
| MLA | Tian, Shimin,et al."Reevaluation of the aeolian sand flux from the Ulan Buh Desert into the upper Yellow River based on in situ monitoring updates".GEOMORPHOLOGY 327(2019):307-318. |
入库方式： OAI收割
来源：地理科学与资源研究所
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