The role of pingos in the development of the Dzhangyskol lake-pingo complex, central Altai Mountains, southern Siberia

被引：41

作者：

Blyakharchuk, T. A. ^{[1
]}

Wright, H. E. ^{[2
]}

Borodavko, P. S. ^{[3
]}

van der Knaap, W. O. ^{[4
,5
]}

Ammann, B. ^{[5
]}

机构：

[1] Russian Acad Sci, Inst Monitoring Climat & Ecol Syst, Lab Bioinformat Technol, Tomsk 634055, Russia

[2] Univ Minnesota, Limnol Res Ctr, Minneapolis, MN 55455 USA

[3] Russian Acad Sci, Inst Monitoring Climat & Ecol Syst, Lab Self Org, Tomsk 634055, Russia

[4] Tomsk VV Kuibyshev State Univ, Problem Sci Lab Glactoclimat, Tomsk 634050, Russia

[5] Inst Plant Sci, CH-3013 Bern, Switzerland

来源：

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY | 2008年 / 257卷 / 04期

关键词：

Altai Mountains; Holocene; pollen data; vegetation; climate; pingos; oxygen isotopes;

D O I：

10.1016/j.palaeo.2007.09.015

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Dzhangyskol is a small lake of glacial origin in the central part of the Altai Mountains in southern Siberia. Pollen stratigraphies and chronologies of two cores record the vegetational development of the area from the Late Glacial treeless landscape to the forest and steppe of today. The modem lake is a remnant of a much larger ice-dammed lake, which was reduced in size and then temporarily drained after diversion of the inflowing mountain meltwater stream, which had low delta O-18 values. The dry lake floor allowed development of permafrost and small pingos (frozen mounds of lake sediments). With the onset of greater climatic humidity in the mid-Holocene, the input of local water with higher delta O-18 caused a rise in lake level, drowning the earlier pingos. Growth of a broad fen on the margin of the lake led to formation of a modem pingo complex. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：404 / 420

页数：17

共 36 条

[1]

BARYSHNIKOV GY, 1996, T YUZHNO SIBIRSKOGO, P129

[2] Late Glacial and Holocene vegetational history of the Altai Mountains (southwestern Tuva Republic, Siberia) [J].

Blyakharchuk, T. A. ;

Wright, H. E. ;

Borodavko, P. S. ;

van der Knaap, W. O. ;

Ammann, B. .

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2007, 245 (3-4) :518-534

[3] Late Glacial and Holocene vegetational changes on the Ulagan high-mountain plateau, Altai Mountains, southern Siberia [J].

Blyakharchuk, TA ;

Wright, HE ;

Borodavko, PS ;

van der Knaap, WO ;

Ammann, B .

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2004, 209 (1-4) :259-279

[4]

Bobrov A.Ye., 1983, Spores of ferns and pollen of gymnosperms and monocotyledons of the flora of the European part of the USSR

[5]

BORODAVKO PS, 2003, GEOGRAPHY LAKES SE A, V3, P31

[6]

Butvilovsky V.V., 1993, PALAEOGEOGRAPHY LAST

[7]

CHERNOVA GM, 1988, RESULTS PALYNOLOGICA, V7, P101

[8]

GRACH AD, 1980, ANCIENT NOMADS CT AS

[9]

GRIMM E, 1991, TILIA 1 12 GILIA GRA

[10]

HUNTLEY B, 1983, ATLAS PAST PRESENT M

← 1 2 3 4 →