Open AccessRESTORATION OF THE PHYTO-DIVERSITY OF BETULA PENDULA FORMATION ON SOD-FOREST GLEY-ELUVIAL SANDY POST-PYROGENIC SOIL
Author(s) -
Yuliya Gorbunova,
Anna Grigorevskaya,
Tatyana A. Devyatova
Publication year - 2020
Publication title -
lesotehničeskij žurnal
Language(s) - English
Resource type - Journals
ISSN - 2222-7962
DOI - 10.34220/issn.2222-7962/2020.2/1
Subject(s) - betula pendula , eluvium , abundance (ecology) , chemistry , gleysol , botany , horticulture , soil water , biology , ecology
A sequence of changes of three stages over 10 years is reported during the formation of the phytocenosis of the pyrogenic formation of Betula pendula. The change of stages is due to the introduction of new plants of different phytocenotypes, the appearance of consortia and the complexity of its composition and structure. The account of abundance was performed according to O. Drude. The content of readily soluble phosphates and exchange potassium was performed according to Chirikov. After pyrogenic exposure, there was an increase in the content of P2O5 and K2O in the 0-10 cm layer, due to their increased content in the ash formed after the pyrogenic exposure. In 2014, the content of P2O5 in the soil in the territory of Betula pendula formation increased by 9.15% compared to the background. In 2018, the content of P2O5 decreased by 11% compared with the second year of the study after the 2010 forest fire and gradually approached the background value. In 2014, the K2O content in the 0-10 cm layer of sod-eluvial glue clay-illuviated soil increased by 6.86% compared to the background area. From 2014 to 2018, the K2O content decreased by 5.39% in the area of Betula pendula formation. Phyto-diversity decreased in 2015 and amounted to 13 species, compared to 2014 (47 species), 2016 - 18 species, 2018 - 22 species and in 2019 - 23 species. The work describes anthropotolerant groups