Vegetation of different ages fallows in the forest-steppe zone Cisbaikal region

Kazanovsky, S. G.; Dorofeev, N. V.; Zorina, S. Yu.; Sokolova, L. G.

doi:10.14258/pbssm.2022054

bpssm

2022

DOI: 10.14258/pbssm.2022054

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Vegetation of different ages fallows in the forest-steppe zone Cisbaikal region

S. G. Kazanovsky¹,

N. V. Dorofeev²,

S. Yu. Zorina³

et al.

Abstract: In the work, 22 fallows of different ages in the forest-steppe zone of the Irkutsk region were studied. The main stages of vegetation restoration on fallows are revealed. The features of postagrogenic development of different ages fallows have been established. The stages of development of phytocenoses on deposits are determined. It is shown that the postagrogenic succession is directed towards the formation of a pine or pine-birch forest, in some cases towards a settled or real meadow. The development of the … Show more

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Fallow Lands of Tuva (Russia): 30 years of Steppe Demutation

Makunina

2023

J Plant Sci Phytopathol

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Tuva has been a cattle-breeding region since ancient times, extremely continental climate of this region is little suitable for agriculture. However, the steppes of intermountain depressions in Tuva were heavily plowed by the early 1980s. In the 1990s most of the arable lands were abandoned; the process of restoration (demutation) of natural vegetation on fallow lands began. By now, 30 years later, the old fallows are expected to achieve the stage of the secondary steppe. The purpose of this work is to estimate the differences between virgin steppes and corresponding secondary steppes in Tuva. Tussock, hummock, and desert virgin steppes have been compared with corresponding to three types of 30-year-old fallow communities. For this study, 330 geobotanical releves have been used. The criteria for comparison have been chosen as follows: the similarity of species composition, the spectrum of dominant species, species richness, grass cover, and grass height. The statistical validity of their differences has been verified. According to these criteria, virgin steppes and their 30-year-old fallow derivatives are shown to differ significantly.

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Fallow Lands of Tuva (Russia): 30 years of Steppe Demutation

Makunina

2023

J Plant Sci Phytopathol

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The current humus state of the fallow lands of the Akmola region in the subzone of the southern chernozems

Zvyagin,

Kekilbayeva,

Kassipkhan

et al. 2024

ПиА

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The research studied the humus state and humus reserves in a layer of 0-20 cm for 3 types of deposits in the steppe zone of the Akmola region on southern chernozems, on which agricultural use was discontinued in different periods of time. An assessment of the postagrogenic recovery of humus content in deposits of different ages is given. It was determined that the content and reserves of humus in layers 0-10 and 10-20 cm differ significantly depending on the age of fallow lands. Also, a change in soil density in a 20-centimeter soil layer was found with an increase in the age of the deposit. This indicates the processes of natural reproduction of humus of southern chernozems in the region during post-agrogenic land restoration, using the example of a deposit. The increase in the age of the deposit was accompanied by an increase in humus content and soil density. The results obtained allowed to determine the prospects for their further use in agriculture.

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Vegetation of different ages fallows in the forest-steppe zone Cisbaikal region

Cited by 2 publications

References 1 publication

Fallow Lands of Tuva (Russia): 30 years of Steppe Demutation

Fallow Lands of Tuva (Russia): 30 years of Steppe Demutation

The current humus state of the fallow lands of the Akmola region in the subzone of the southern chernozems

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