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(Article of periodic en Anglais - 2013)

Document title

Cryogenic soil activity along bioclimatic gradients in Northern Sweden : Insights from eight different proxies

Authors(s) and Affiliation(s)

KLAUS M. (1) ; BECHER M. (1) ; KLAMINDER J. (1) ;
(1) Dep. of Ecology and Environmental Science, Univ., Umeå, SUEDE

Abstract

Eight proxies of cryogenic soil activity (including measurements of soil surface motion, vegetation and grey values of aerial photographs) were examined at 8 study sites near Abisko. Six proxies were significantly correlated with each other. Soil surface motion increased by 3 to 5 times along the precipitation gradient and was 2 to 4 times greater at intermediate elevations than at low and high elevations, a pattern reflected by vegetation assemblages. The results suggest that inferences about how cryogenic soil activity changes with climate are independent of the choice of the proxy, although some proxies should be applied carefully. Four preferred proxies indicate that cryogenic soil activity may respond differently to climate warming along the elevation gradient and could be greatly modified by precipitation. This underlines the strong but spatially complex response of cryogenic processes to climate change in the Arctic

Source

Article of periodic

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

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

Millesime : 2013, vol. 24, no3 [pp. 210-223]

Bibliographic references : 2 p.

Collation : 6 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1778

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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