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(Article of periodic en Anglais - 2014)

Document title

Vegetation-permafrost relations within the forest-tundra ecotone near Old Crow, Northern Yukon, Canada

Authors(s) and Affiliation(s)

ROY-LÉVEILLÉE P. (1) ; BURN C.R. (1) ; MCDONALD I.D. (2) ;
(1) Dept. of Geography and Environmental Studies, Carleton Univ., Ottawa, CANADA
(2) Parks Canada Agency, Whitehorse, CANADA

Abstract

Old Crow Flats is a glaciolacustrine plain that straddles the forest-tundra ecotone in northern Yukon. Annual mean near-surface permafrost temperatures (Tps) measured on the Flats between 2008 and 2011 in patches of taiga, tall shrubs and low shrubs were correlated with local snow depth. Snow depth was controlled by vegetation height if the snow supply was not limited, for example, where low shrubs and large lakes dominate the landscape. Where taiga patches were more extensive, redistributed snow was trapped at the patch edge. The permafrost temperature field is heterogeneous under patchy vegetation in the forest-tundra ecotone. The data suggest that it is governed by both the snow-holding capacity of local vegetation patches and the spatial configuration of vegetation in the surrounding landscape, which controls snow supply

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2014, vol. 25, no2 [pp. 127-135]

Bibliographic references : 1 p.

Collation : 5 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1805

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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