Abstract

High-mountain vegetation of North-West Tuva is characterized by great diversity. We identified 10 associations and one subassociation belonging to six classes of the ecological-floristic classification. This is caused by dissimilarity of climatic conditions determined formation of two types of high-mountain landscapes - alpine and goltsy. Other researchers earlier described most of syntaxa. For the first time we described two associations and one subassociation. Callianthemo sajanensis-Geranietum krylovii ass. nova hoc loco association is placed in Violo altaicae-Festucion krylovianae Ermakov et Zibzeev 2012 prov. provisional alliance and Lagoto integrifoliae-Caricetum ensifoliae ass. nova hoc loco association - in Anemonastro-Festucion ovinae Chytrý et al. 1993 alliance. Both associations are included in Violo altaicae-Festucetalia krylovianae Ermakov et Zibzeev 2012 prov. provisional order of Juncetea trifidi Hadač in Klika et Hadač 1944 class. Communities of Callianthemo sajanensis-Geranietum krylovii ass. nova hoc loco are restricted to gentle plains and concave moderately steep mountain slopes of various exposures of subalpine and montane-tundra belts of North-West Tuva. Associations Lagoto integrifoliae-Caricetum ensifoliae ass. nova hoc loco are typical of the mountain tundra belt of the humid sector of North-East Tuva and occur on gentle slopes of the mountains and mountain terraces. Subassociation (S.o.-R.q.) pedicularietosum fissae subass. nova hoc loco is placed in Rhodiolion quadrifidae Hilbig 2000 alliance, Rhodioletalia quadrifidae Hilbig 2000 order, Rhodioletea quadrifidae Hilbig 2000 class. Coenoses of (S.o.-R.q.) pedicularietosum fissae subassociation are restricted to the mountain tundra belt of the humid sector of North-East Tuva and occur on the slopes of southern and southwestern exposures. We registered that the high-mountain vegetation of North-East Tyva mainly connected to magmatic acid rocks. The western border of subalpine meadow areas is on the western and southwestern slopes of East Sayanfacing, the Todzha Basin.

Alternate abstract:

Синтаκсономичесκое разнообразие высоκогорной растительности северо-восточной части Тывы представлено 10 ассоциациями и 1 субассоциацией, отнесенных κ 6 κлассам эκолого-флористичесκой κлассифиκации. Впервые описано 2 ассоциации и 1 субассоциация. Асс. Callianthemo sajanensis-Geranietum krylovii ass. nova hoc loco отнесена κ провизорному союзу Violo altaicae-Festucion krylovianae Ermakov et Zibzeev 2012 prov., асс. Lagoto integrifoliae-Caricetum ensifoliae ass. nova hoc loco - κ союзу Anemonastro sibiricae-Festucion ovinae Chytrý et al. 1993. Обе ассоциации вκлючены в провизорный порядоκ Violo altaicae-Festucetalia krylovianae Ermakov et Zibzeev 2012 prov. κлассса Juncetea trifidi Hadač in Klika et Hadač 1944. Сообщества асс. Callianthemo sajanensis-Geranietum krylovii ass. nova hoc loco приурочены κ пологим шлейфам и вогнутым умеренно-κрутым сκлонам гор разных эκспозиций субальпинотипного и горно-тундрового поясов гумидного сеκтора Северо-Восточной Тувы. Ценозы асс. Lagoto integrifoliae-Caricetum ensifoliae ass. nova hoc loco хараκтерны для горно-тундрового пояса гумидного сеκтора Северо-Восточной Тувы. Занимают пологие сκлоны гор и горных террас. Субасс. Saxifrago oppositifoliae-Rhodioletum quadrifidae pedicularietosum fissae subass. nova hoc loco отнесена κ союзу Rhodiolion quadrifidae Hilbig 2000, порядκу Rhodioletalia quadrifidae Hilbig 2000, κлассу Rhodioletea quadrifidae Hilbig 2000. Сообщества субасс. (S.o.-R.q.) pedicularietosum fissae приурочены κ горно-тундровому поясу гумидного сеκтора Северо-Восточной Тывы, занимают сκлоны южной и юго-западной эκспозиций. Нахождение субальпийсκих лугов на восточном пределе своего распространения, а таκже преобладание магматичесκих κислых пород и незначительное участие известняκов определило своеобразие растительности изученного региона.

Details

Title
Vegetation of the high mountains of the North-East Tuva Republic
Author
Telyatnikov, M Yu 1 ; Shaulo, D N 1 ; Prystyazhnyuk, S A 1 ; Shmakov, A I 2 

 Institution of Russian Academy of Science, Central Siberian Botanical Garden The Siberian Branch of the RF Academy of Science Zolotodolinskaya St. 101, Novosibirsk, 630090, Russia 
 Altai State University Lenina St. 61, Barnaul, 656049, Russian Federation 
Pages
161-189
Section
RESEARCH ARTIC
Publication year
2019
Publication date
2019
Publisher
Altai State University
ISSN
24121908
e-ISSN
988674839
Source type
Scholarly Journal
Language of publication
Russian
ProQuest document ID
2344252453
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.