Simulation of the decadal permafrost distribution on the Qinghai-Tibet Plateau (China) over the past 50 Years

Auteur(s) et Affiliation(s)

WEIMING, C.

State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

SHANGMIN, Z.

Xinjiang Inst. of Ecology and Geography, CAS, Urumqi, Chine

Dept. of Surveying and Mapping, College of Mining Technology, Univ. of Technology, Taiyuan, Chine

Graduate Univ. of Chinese Academy of Sciences, Beijing, Chine

CHENGHU, Z.

State Key Lab. of Resources and Environmental Information Systems, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

XI, C.

Xinjiang Inst. of Ecology and Geography, CAS, Urumqi, Chine

Description :
Decadal changes in permafrost distribution on the Qinghai-Tibet Plateau (QTP) over the past 50 years (1960-2009) were simulated with a response model that uses data from a digital elevation model, mean annual air temperature (MAAT) and the vertical lapse rate of temperature. Compared with published maps of permafrost distribution, the accuracy of the simulated results is about 85 per cent. It is shown that the rate of permafrost loss has accelerated since the 1980s, and the total area of degraded permafrost accounts for about one-fifth of the total area of permafrost in the 1960s.

Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2012, vol. 23, n°. 4, p. 292-300, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2012

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais