Arid
DOI10.1002/eco.4
A conceptual framework for understanding semi-arid land degradation: ecohydrological interactions across multiple-space and time scales
Turnbull, L.1; Wainwright, J.1; Brazier, R. E.2
通讯作者Turnbull, L.
来源期刊ECOHYDROLOGY
ISSN1936-0584
出版年2008
卷号1期号:1页码:23-34
英文摘要

Land degradation is a problem prolific across semi-arid areas worldwide. Despite being a complex process including both biotic and abiotic elements, previous attempts to understand ecosystem dynamics have largely been carried out within disparate disciplines of ecology and hydrology, which has led to significant limitations. Here, an ecohydrological framework is outlined. to provide a new direction for the study of land degradation in semi-arid ecosystem. Unlike other frameworks that draw upon hierarchy theory to provide a board, non-explicit conceptual framework is based upon the explicit linkage of process operating over the continuum of temporal and spatial scales by perceiving the ecosystem as a series of structural and functional connections, within which interactions between biotic and abiotic components of the landscape occur. It is hypothesized that semi-arid land degradation conforms to a cusp-catastrophe model in which the two controlling variables are abiotic structural connectivity and abiotic functional connectivity, which implicitly account for ecosystem resilience, and biotic structural and function connectivity. It is suggest therefore that future research must (1) evaluate how abiotic and biotic function (i.e. water, sediment and nutrient loss/redistribution) vary over grass-shrub transitions and (2) quantify the biotic/abiotic structure over grass-shrub transitions, to (3) determine the interactions between ecosystem structure and function. and interaction/feedbacks between biotic and abiotic components of the ecosystem. Copyright (C) 2008 John Wiley & Sons, Ltd.


英文关键词ecohydrology vegetation transition structure function biotic connectivity cusp catastrophe
类型Review
语种英语
国家England
收录类别SCI-E
WOS记录号WOS:000259925100004
WOS关键词SOUTHERN NEW-MEXICO ; NORTHERN CHIHUAHUAN DESERT ; OVERLAND-FLOW ; LANDSCAPE CONNECTIVITY ; VEGETATION PATTERNS ; ECOLOGICAL-SYSTEMS ; CATASTROPHE-THEORY ; SHRUBLAND HABITATS ; INTERRILL RUNOFF ; SPATIAL PATTERNS
WOS类目Ecology ; Environmental Sciences ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/157025
作者单位1.Univ Sheffield, Dept Geog, Sheffield Ctr Int Drylands Res, Sheffield S10 2TN, S Yorkshire, England;
2.Univ Exeter, Dept Geog, Exeter EX4 4RJ, Devon, England
推荐引用方式
GB/T 7714
Turnbull, L.,Wainwright, J.,Brazier, R. E.. A conceptual framework for understanding semi-arid land degradation: ecohydrological interactions across multiple-space and time scales[J],2008,1(1):23-34.
APA Turnbull, L.,Wainwright, J.,&Brazier, R. E..(2008).A conceptual framework for understanding semi-arid land degradation: ecohydrological interactions across multiple-space and time scales.ECOHYDROLOGY,1(1),23-34.
MLA Turnbull, L.,et al."A conceptual framework for understanding semi-arid land degradation: ecohydrological interactions across multiple-space and time scales".ECOHYDROLOGY 1.1(2008):23-34.
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