Dynamics of Soil Properties and Carbon Stocks Structure in Postagrogenic Ecosystems of Southern Taiga during Natural Reforestation

— The dynamics of some soil properties and carbon stocks in the main components of postagrogenic ecosystems were studied during natural reforestation in dependence on the lithological conditions and the type of former land use by the example of four chronosequences in Kostroma oblast. In the course...

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Bibliographic Details
Published in:Eurasian soil science 2020-02, Vol.53 (2), p.240-252
Main Authors: Ryzhova, I. M., Telesnina, V. M., Sitnikova, A. A.
Format: Article
Language:English
Subjects:
Acidic soils
Acidity
Agricultural land
Arable land
Carbon
Carbon content
Conservation of Soils
Degradation
Detritus
Dynamics
Earth and Environmental Science
Earth Sciences
Ecosystems
Environmental changes
Forest soils
Geotechnical Engineering & Applied Earth Sciences
Land use
Lithology
Organic carbon
Reforestation
Rehabilitation
Restoration
Sandy soils
Soil dynamics
Soil profiles
Soil properties
Stocks
Taiga
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Summary:— The dynamics of some soil properties and carbon stocks in the main components of postagrogenic ecosystems were studied during natural reforestation in dependence on the lithological conditions and the type of former land use by the example of four chronosequences in Kostroma oblast. In the course of forest restoration, soil acidity increases and the content of exchangeable bases decreases in the upper part of the soil profile; this trend is more pronounced in sandy soils. The content and stocks of organic carbon dynamics are determined by the land use type, while the intensity of the postagrogenic dynamics is controlled by the native properties of soil. As forest vegetation is restored, a gradual differentiation is going on in the old arable layer by its carbon content and reserves, being most pronounced in 90–100 year-old forest soils. Approximately in 100 years, a total stock of organic carbon increases by 7–9 times in an ecosystem when overgrowing the arable land, and by 3.5 times in case of overgrowing hayfields. The structure of ecosystem carbon pool changes, i.e., the share of soil carbon decreases from 80 to 50% in 20 years after the land use had stopped, while the detritus share, on the contrary, increases up to 10% of the total carbon pool.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229320020106