Arid
DOI10.1002/ldr.2352
FLOW AND SEDIMENT CONNECTIVITY IN SEMI-ARID LANDSCAPES IN SE SPAIN: PATTERNS AND CONTROLS
Marchamalo, Miguel1; Hooke, Janet M.2; Sandercock, Peter J.3
通讯作者Marchamalo, Miguel
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
出版年2016
卷号27期号:4页码:1032-1044
英文摘要

Much of the water and sediment fluxes in semi-arid catchments are found to be highly concentrated in localized pathways. Identifying the location of these pathways in the landscape is important for management and restoration. Measures can then be targeted so as to minimize the potential for erosion and sediment flux along these pathways. A method of repeat field mapping of flow and sediment pathways suitable for Mediterranean catchments is presented. Several small catchments in Carcavo basin, SE Spain, differing in topographic and land use characteristics, were monitored under several events. Morphometric properties of pathways were analysed and compared with rainfall characteristics. Number and length of pathways varied with rainfall characteristics and also antecedent conditions. In low rainfall events, runoff sources and main pathways were disconnected, but in a larger event, the network of pathways became fully connected. The pathway patterns showed that man-made lines such as terrace embankments and tracks have a major influence on sediment connectivity. Micro-topographic factors, soil moisture and the presence of vegetation are highly influential on pathways and the frequency of water and sediment fluxes. Runoff and erosion hotpots for the development of pathways were identified, which should be targeted for mitigation and restoration measures using vegetation. The relevance of local scale factors emphasizes the importance of repeat field observations to understand connectivity and pathways development in the landscape. Copyright (C) 2015 John Wiley & Sons, Ltd.


英文关键词runoff soil erosion hotspots landscape linkages vegetation desertification geographic information systems Mediterranean
类型Article
语种英语
国家Spain ; England ; Australia
收录类别SCI-E
WOS记录号WOS:000380963900016
WOS关键词SOIL-EROSION ; HYDROLOGICAL CONNECTIVITY ; RUNOFF GENERATION ; SOUTHEAST SPAIN ; MEDITERRANEAN LANDSCAPE ; VEGETATION PATTERNS ; LAND ABANDONMENT ; SPATIAL-PATTERN ; GULLY EROSION ; CATCHMENT
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194940
作者单位1.Tech Univ Madrid, Dept Land Morphol & Engn, ETSI Caminos Canales & Puertos, Madrid 28040, Spain;
2.Univ Liverpool, Dept Geog & Planning, Liverpool L69 7ZT, Merseyside, England;
3.Jacobs, 80A Mitchell St,POB 952, Bendigo 3552, Australia
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GB/T 7714
Marchamalo, Miguel,Hooke, Janet M.,Sandercock, Peter J.. FLOW AND SEDIMENT CONNECTIVITY IN SEMI-ARID LANDSCAPES IN SE SPAIN: PATTERNS AND CONTROLS[J],2016,27(4):1032-1044.
APA Marchamalo, Miguel,Hooke, Janet M.,&Sandercock, Peter J..(2016).FLOW AND SEDIMENT CONNECTIVITY IN SEMI-ARID LANDSCAPES IN SE SPAIN: PATTERNS AND CONTROLS.LAND DEGRADATION & DEVELOPMENT,27(4),1032-1044.
MLA Marchamalo, Miguel,et al."FLOW AND SEDIMENT CONNECTIVITY IN SEMI-ARID LANDSCAPES IN SE SPAIN: PATTERNS AND CONTROLS".LAND DEGRADATION & DEVELOPMENT 27.4(2016):1032-1044.
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