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Late Pleistocene–Holocene environmental changes in ultra-continental subarid permafrost-affected landscapes of the Terekhol' Basin, South Siberia

Landscapes and soils through time

Auteur(s) et Affiliation(s)

Inst. of Geography, Russian Academy of Sciences, Moscou, Russie, Federation de
PANIN, A.
Fac. of Geography, State Univ., Moscou, Russie, Federation de
Inst. of Horticulture, Russian Academy of Agriculture, Vereya, Russie, Federation de
FUZEINA, Y.
Fac. of Geography, State Univ., Moscou, Russie, Federation de
TUROVA, I.
Inst. of Geography, Russian Academy of Sciences, Moscou, Russie, Federation de
SAUER, D.
Inst. of Geography, Univ. of Technology, Dresden, Allemagne
JAHN, R.
Soil Science and Soil Protection Group, Univ., Halle, Allemagne
STAHR, K.
Inst. of Soil Science and Land Evaluation, Univ. of Hohenheim, Stuttgart, Allemagne


Description :
This study is an attempt to use closely related inter-complementary paleo-archives of a local landscape to access understanding of Late Pleistocene–Holocene environmental changes in the region. The study site is a small intermountain basin in the Sayan-Tuva Upland. Paleo-archives covering about 13 000 yrs were studied : paleosol-sedimentary sequences on a delta-alluvial fan of a small river, lacustrine sediments in bottom cores and on palsa-islands and soils of palsa-islands. Continental permafrost sub–arid/arid conditions persist in the basin within the studied period. The following sequence of environmental changes was established : 11 000 and 4 000 cal yrs BP are characterized by well balanced climatic moistening; progressive aridization started in the region about 6 200 cal yrs BP. In contemporary soils aridization is reflected in widely spread Natric features and progressive salinization.


Type de document :
Congrès

Source :
International Conference Landscapes and Soils through Time, Stuttgart, Allemagne, 2011-07-29/2011-08-01, Catena (Giessen), issn : 0341-8162, 2014, vol. 112, p. 99-111, nombre de pages : 13, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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