Changes to the permafrost environment after forest fire, Da Xi'an Ridge, Gu Lian Mining Area, China

Liang Lin‐Heng, Zhou You‐Wu and Wang Jia‐Cheng

Permafrost and Periglacial Processes, 1991, vol. 2, issue 3, 253-257

Abstract: Permafrost field investigations in the Gu Lian Mining area of Great Xi'an Ridge (in Chinese: DA HINGAN LING) was undertaken in the second year following a forest fire. It was found that after the fire air temperature, ground temperature, evaporation (measured by pan) and wind velocity increased but humidity, ground ice and water content decreased. These changes led to an increase in seasonal thaw depths. These results illustrate that the permafrost environment is changed greatly by forest fire. Des recherches sur l'evolution du pergélisol la seconde année après un incendie de forét ont été entreprises sur le terrain dans la région de Gu Liang Ming appartenant aux crètes du Great Xin' An (en chinois: Da Hingan Ling). Après l'incendie, la température de l'air, celle du sol, l'évaporation (mesurée dans des r°Cipients) et la vitesse du vent ont augmenté tandis que l'humidité, la glace du sol et le contenu en eau de celui‐ci ont diminué. Ces changements ont conduit à une augmentation de la profondeur du dégel saisonnier et ont provoqué de grandes modifications dans le domaine du pergélisol.

Date: 1991
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