Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1177/0309133307076106 |
Vegetation tin dryland river channels and its interaction with fluvial processes | |
Sandercock, P. J.; Hooke, J. M.; Mant, J. M. | |
通讯作者 | Sandercock, P. J. |
来源期刊 | PROGRESS IN PHYSICAL GEOGRAPHY |
ISSN | 0309-1333 |
出版年 | 2007 |
卷号 | 31期号:2页码:107-129 |
英文摘要 | Vegetation forms a major component of the channel environment of dryland rivers in Mediterranean Europe yet the interactions between vegetation and fluvial processes in dryland river channels have received relatively little attention. Characteristic of dryland channels is a degree of complexity and irregularity in morphology coupled with abrupt changes in patterns of riparian vegetation along their course. This is in contrast to more temperate and humid channels, which show strong downstream trends in morphology and a regularity in the distribution of vegetation across the valley floor. The general effect of vegetation in these channels appears to be to enhance the processes of sedimentation and increase resistance to erosion. However, at high stress levels vegetation may be removed. The limited work that has been undertaken indicates that there is considerable variability in the effect that vegetation has on channel processes, depending on both the magnitude of the flow and characteristics of the vegetation, such as their distribution and positioning within the channel and factors such as plant flexibility, cross-sectional area (blockage ratio), number of stems. Studies of sediment connectivity are beginning to yield new insights into the dynamics of dryland rivers, and in particular the role of vegetation in reducing the connectivity of sediment transfers downstream. Detailed surveying at monitored sites such as is being carried out within the EU-funded project RECONDES is required to study the interactions between vegetation, sediment and flow in dryland rivers of the Mediterranean region. |
英文关键词 | connectivity ephemeral dryland river channels erosion and sediment transport Mediterranean thresholds EU Project RECONDES vegetation |
类型 | Review |
语种 | 英语 |
国家 | England |
收录类别 | SCI-E |
WOS记录号 | WOS:000246168000001 |
WOS关键词 | RIPARIAN PLANT-COMMUNITIES ; COLORADO PLATEAU REGION ; ARID CENTRAL AUSTRALIA ; SOUTH-EAST SPAIN ; TANA RIVER ; GEOMORPHOLOGICAL IMPACTS ; ANABRANCHING RIVERS ; SEDIMENT TRANSPORT ; EPHEMERAL CHANNELS ; CONCENTRATED FLOW |
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/2XILL650/155759 |
作者单位 | (1)Univ Portsmouth, Dept Geog, Portsmouth PO1 3HE, Hants, England;(2)Cranfield Univ, River Restorat Ctr, Cranfield MK43 0AL, Beds, England |
推荐引用方式 GB/T 7714 | Sandercock, P. J.,Hooke, J. M.,Mant, J. M.. Vegetation tin dryland river channels and its interaction with fluvial processes[J],2007,31(2):107-129. |
APA | Sandercock, P. J.,Hooke, J. M.,&Mant, J. M..(2007).Vegetation tin dryland river channels and its interaction with fluvial processes.PROGRESS IN PHYSICAL GEOGRAPHY,31(2),107-129. |
MLA | Sandercock, P. J.,et al."Vegetation tin dryland river channels and its interaction with fluvial processes".PROGRESS IN PHYSICAL GEOGRAPHY 31.2(2007):107-129. |
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