An environmental gradient of vegetative controls upon channel planform in the source region of the Yangtze and Yellow Rivers | |
Yu G. A. ; Brierley G. ; Huang H. Q. ; Wang Z. Y. ; Blue B. ; Ma Y. X. | |
2014 | |
关键词 | Alluvial river Channel planform River diversity Riparian vegetation Hydrologic dynamics riparian vegetation tibetan plateau anabranching channels single-thread source zone sand-bed patterns evolution stability incision |
英文摘要 | Alluvial reaches in the source region of the Yangtze and Yellow Rivers, located atop the Qinghai-Tibetan Plateau and mostly at elevations that are typically higher than 3500 m, have similar slope and valley setting conditions. However, alluvial reaches in the source region of the Yangtze River exhibit predominantly braided channel planforms, while equivalent reaches in the source region of the Yellow River have more diverse planform morphologies including anastomosing/braided, anabranching/braided, and anabranching/anastomosing reaches. The regional gradient of variation in riparian vegetation and interactions between vegetation development and hydrologic process are shown to be major factors influencing this difference in channel planforms. A short period above freezing, coincident with recurrent yet pulsed flows in the source region of the Yangtze River, suppress riparian vegetation growth, promoting the development of braided channel morphologies. In contrast, a milder climate, coincident with less variable flows in the source region of the Yellow River, permit the establishment of different forms of riparian vegetation, thereby supporting the development of a wider range of channel planform morphologies. (C) 2014 Elsevier B.V. All rights reserved. |
出处 | Catena |
卷 | 119 |
页 | 143-153 |
收录类别 | SCI |
语种 | 英语 |
ISSN号 | 0341-8162 |
内容类型 | SCI/SSCI论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/29442] |
专题 | 地理科学与资源研究所_历年回溯文献 |
推荐引用方式 GB/T 7714 | Yu G. A.,Brierley G.,Huang H. Q.,et al. An environmental gradient of vegetative controls upon channel planform in the source region of the Yangtze and Yellow Rivers. 2014. |
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