Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.geomorph.2008.05.004 |
Flow chutes in Fowlers Creek, arid western New South Wales, Australia: Evidence for diversity in the influence of trees on ephemeral channel form and process | |
Dunkerley, David | |
通讯作者 | Dunkerley, David |
来源期刊 | GEOMORPHOLOGY
![]() |
ISSN | 0169-555X |
出版年 | 2008 |
卷号 | 102期号:2页码:232-241 |
英文摘要 | This paper identifies a fluvial landform, the flow chute, from Fowlers Creek, an ephemeral stream in western New South Wales, Australia. On this stream there are contrasting configurations of channel-margin and channel-bed vegetation (channel-associated vegetation). In the most common type of channel reach, large Eucalyptus camaldulensis trees grow on the bed and banks, and contribute to high channel roughness. In some reaches of about 0.5 km length, however, no trees grow below mid-bank height. The bed remains completely unvegetated, and the channel narrows to one third or less of the width of adjoining reaches immediately upstream and downstream. The coarse end of the bedload grain size population is not represented in these narrow reaches, indicating that the coarsest grains are efficiently moved through them, overpassing finer sediments. These reaches evidently experience higher flow speeds than the remainder of the channel, are here termed flow chutes. The bed material within them is often moved as dunes that remain upon flood recession. Each flow chute ends with a reverse bed slope and just downstream of the terminus the channel widens, resulting in the deposition of coarse bed load in the form of gravel and cobble bars. The reverse bed slope detains water in the flow chutes, which remain as major pools or waterholes for months following flood events. The large and apparently old trees lining the flow chutes imply that these channel features are stable over periods of 10(2)-10(3) years, in contrast with the behaviour of reaches with vegetated beds, where bank erosion and local lateral channel migration and/or widening are active. Flow chutes thus appear to be stable, equilibrium fluvial landforms. (C) 2008 Elsevier B.V. All rights reserved. |
英文关键词 | Fowlers Creek Riparian vegetation Channel-associated vegetation Flow chute |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000261282000004 |
WOS关键词 | LARGE WOODY DEBRIS ; RIPARIAN VEGETATION ; STREAM BANKS ; COOPER CREEK ; SAND ; RIVERS ; MORPHOLOGY ; TRANSPORT ; STABILITY ; SYSTEM |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157461 |
作者单位 | (1)Monash Univ, Sch Geog & Environm Sci, Clayton, Vic 3800, Australia |
推荐引用方式 GB/T 7714 | Dunkerley, David. Flow chutes in Fowlers Creek, arid western New South Wales, Australia: Evidence for diversity in the influence of trees on ephemeral channel form and process[J],2008,102(2):232-241. |
APA | Dunkerley, David.(2008).Flow chutes in Fowlers Creek, arid western New South Wales, Australia: Evidence for diversity in the influence of trees on ephemeral channel form and process.GEOMORPHOLOGY,102(2),232-241. |
MLA | Dunkerley, David."Flow chutes in Fowlers Creek, arid western New South Wales, Australia: Evidence for diversity in the influence of trees on ephemeral channel form and process".GEOMORPHOLOGY 102.2(2008):232-241. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Dunkerley, David]的文章 |
百度学术 |
百度学术中相似的文章 |
[Dunkerley, David]的文章 |
必应学术 |
必应学术中相似的文章 |
[Dunkerley, David]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。