J 2008

Diversity of forest vegetation across a strong gradient of climatic continentality: Western Sayan Mountains, southern Siberia

CHYTRÝ, Milan, Jiří DANIHELKA, Svatava KUBEŠOVÁ, Pavel LUSTYK, Nikolai ERMAKOV et. al.

Basic information

Original name

Diversity of forest vegetation across a strong gradient of climatic continentality: Western Sayan Mountains, southern Siberia

Name in Czech

Diverzita lesní vegetace podél silného gradientu klimatické kontinentality: Západní Sajan, jižní Sibiř

Authors

CHYTRÝ, Milan (203 Czech Republic, guarantor), Jiří DANIHELKA (203 Czech Republic), Svatava KUBEŠOVÁ (203 Czech Republic), Pavel LUSTYK (203 Czech Republic), Nikolai ERMAKOV (643 Russian Federation), Michal HÁJEK (203 Czech Republic), Petra HÁJKOVÁ (203 Czech Republic), Martin KOČÍ (203 Czech Republic), Zdenka OTÝPKOVÁ (203 Czech Republic), Jan ROLEČEK (203 Czech Republic), Marcela ŘEZNÍČKOVÁ (203 Czech Republic), Petr ŠMARDA (203 Czech Republic), Milan VALACHOVIČ (703 Slovakia), Denis POPOV (643 Russian Federation) and Ivan PIŠÚT (703 Slovakia)

Edition

Plant Ecology, Netherlands, Springer, 2008, 1385-0237

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.730

RIV identification code

RIV/00216224:14310/08:00024190

Organization unit

Faculty of Science

UT WoS

000254460300004

Keywords in English

Classification; Hemiboreal forest; Ordination; Soil pH; Species response curve; Taiga; Vegetation-environment relationships

Tags

International impact, Reviewed
Změněno: 26/6/2009 09:41, prof. RNDr. Milan Chytrý, Ph.D.

Abstract

V originále

Southern Siberian mountain ranges encompass strong climatic contrasts from the relatively oceanic northern foothills to strongly continental intermountain basins in the south. Landscapescale climatic differences create vegetation patterns, which are analogous to the broad-scale vegetation zonation over large areas of northern Eurasia. In their southern, continental areas, these mountains harbour forest types which potentially resemble the fullglacial forests recently reconstructed for Central Europe. To identify forest vegetation-environment relationships in the southern Siberian mountain ranges, forest vegetation of the Western Sayan Mountains was sampled on a 280 km transect running from the northern foothills with oceanic climatic features to the continental Central Tuvinian Basin in the south. Based on the species composition, vegetation was classified into hemiboreal forests, occurring at drier and summer-warm sites with high-pH soil, and taiga, occurring at wetter, summer-cool sites with acidic soil. Hemiboreal forests included Betula pendula-Pinus sylvestris mesic forest, Larix sibirica dry forest and Pinus sylvestris dry forest. Taiga included Abies sibirica-Betula pendula wet forest, Abies sibirica-Pinus sibirica mesic forest and Pinus sibirica-Picea obovata continental forest. Hemiboreal forests were richer in vascular plant species, while taiga was richer in ground-dwelling cryptogams. Vegetation-environment relationships were analysed by indirect and direct ordination. Winter and summer temperatures and precipitation exerted a dominant influence on species composition. Soil pH was also an important correlate of species composition, but this factor itself was probably controlled by precipitation. At a more local scale, the main source of variation in species composition was topography, producing landscape patterns of contrasting plant communities on slopes of different aspects and valley bottoms. The response of tree species to major environmental factors was expressed with Huisman-Olff-Fresco models. Larix sibirica appeared to be most resistant to drought and winter frosts, Pinus sibirica was adapted to low temperatures both in winter and summer, and Picea obovata had an intermediate response to climate. Betula pendula, Pinus sylvestris and Populus tremula were associated with the warmest sites with intermediate precipitation, while Abies sibirica was the most moisture-demanding species, sensitive to deep winter frosts.

In Czech

Byla popsána vegetace lesů sibiřského pohoří Západní Sajan, která byla klasifikována do tří typů tajgy a tří typů hemiboreálních lesů.

Links

IAA6163303, research and development project
Name: Diverzita vegetace podél gradientu kontinentality na jižní Sibiři: klíč k pochopení raně postglaciální historie střední Evropy
Investor: Academy of Sciences of the Czech Republic, Vegetation diversity along a continentality gradient in southern Siberia: a key to understanding Early Postglacial history of Central Europe
MSM0021622416, plan (intention)
Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase
Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time