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(Article of periodic en Anglais - 2010)

Document title

Impacts of grassland vegetation cover on the active-layer thermal regime, Northeast Qinghai-Tibet Plateau, China

Authors(s) and Affiliation(s)

WANG G. (1 2) ; LIU L. (1) ; LIU G. (1) ; HU H. (2) ; LI T. (2) ;
(1) Inst. of Mountain Hazards and Environment, CAS and Ministry of Water Resources, Chengdu, CHINE
(2) College of Resources & Environment, Univ., Lanzhou, CHINE

Abstract

The study was conducted in the watershed of the Zuomaokong River in an alpine meadow over a three-year period. A high vegetation cover (93%) delayed thawing and freezing at a given depth relative to sites with lower covers (65%, 30% and 5%). Low vegetation covers exhibited greater annual variability in soil temperatures, and may be more sensitive to changes in air temperature. Low vegetation covers are also linked to higher thermal diffusivity and thermal conductivity in the soils. The maintenance of a high vegetation cover on alpine meadows reduces the impact of heat cycling on the permafrost, may minimise the impact of climate change and helps preserve the microenvironment of the soil

Source

Article of periodic

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

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

Millesime : 2010, vol. 21, no4 [pp. 335-344]

Bibliographic references : 28 ref.

Collation : 8 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.699

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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