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Current state of pine forests of the Bestyakh terrace (the Lena-Amga interfluve, Central Yakutia)

L.G. MikhalevaI.I. Chikidov*
DOI 10.31242/2618-9712-2022-27-1-109-118

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Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk, Russia
*[email protected]r.ru

Received 04.06.2021
Accepted 22.12.2021

Citation
Mikhaleva L.G., Chikidov I.I. Current state of pine forests of the Bestyakh terrace (the Lena-Amga interfluve, Central Yakutia) // Arctic and Subarctic Natural Resources. 2022, Vol. 27, No. 1. P. 109–118. (In Russ.) https://doi.org/10.31242/2618-9712-2022-27-1-109-118

Abstract. The study site is located within the Aldan-Lena District of the Central Yakutian Subprovince representing the middle taiga subzone of the boreal region. Administratively the territory is part of UstAldansky, Megino-Kangalassky and Khangalassky districts of the Republic of Sakha (Yakutia). The studied pine forests grow in the north-eastern part of the distribution area of Pinus silvestris L., forming ribbon communities on the sandy sediments of the Bestyakh terrace. The Central Yakutian zonal pine forest types belong to the Arctostaphylos uva-ursi group. The article provides general characteristics of groups of primary and serial types of pine forests growing in the studied area, as well as their basic geobotanical and wood characteristics. Unfavourable growing conditions determine reduced species diversity and low abundance of subordinate vegetation layers in primary pine forests. A combination of primary and serial pine forest types forms the specific pattern of the Bestyakh terrace vegetation due to the felling and fires which are common to the studied area. Despite the highly developed lands of the Bestyakh terrace of the LenaAmga interfluve, pine forests are rather in good condition there. the Arctostaphylos or lichen-Arctostaphylos types and pronounced mosaic structure of forest vegetation with the participation of young pine forests. Economic and industrial development of the territory advances such patchiness formation that may have both negative and positive effect.

Keywords: Central Yakutia, the Lena-Amga Interfluve, Bestyakh terrace, Pinus silvestris L., pine forest types, forest regeneration .

Acknowledgements. The research was carried out within the State Assignment of the Ministry of Science and Higher Education of the Russian Federation for the projects: «Vegetation of the permafrost zone of the taiga Yakutia: biodiversity, environment-forming functions, protection and rational use» (theme number FWRS-2021-0023, reg. number АААА-А21-121012190038-0), «Causal foundations of the dynamics of soil cover and terrestrial ecosystems in the permafrost zone in the territory of distribution of sandy soils in Central Yakutia» (theme number 0297-2021-0026; reg. number АААА-А21-121012190036-6).


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