Abstract
The current state of the solonetz and ground elder–sedge types upland oak forests of in the Tellermanovsky forest has been studied. The phytomass of forest stands was estimated based on model trees with allowance for the types of their development (according to the original classification). The content and stocks of carbon and nitrogen in phytomass, forest litter, and soil have been evaluated. It was found that the phytomass of oak forests in similar plantations is lower than that before the period of oak drying (in the 1970s to the early 1980s). The mass of fallen leaves and forest litter corresponds to the previous values due to the development of the lower tree layers. The studied oak forests differ most sharply by the stocks of carbon and nitrogen in the phytomass and much less by their reserves in the soil, capacity and rate of the annual cycle. The content of carbon, nitrogen, and nonstructural carbohydrates in the organs of the oak in these oak forests is similar.
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Notes
Early and late phenoforms are phenological forms that differ in the onset of phenophases.
The sum of readily soluble salts was calculated from the concentration of ions passing into the water extract.
The primary and secondary crown differ in origin. The primary crown forms simultaneously with the growth of the trunk, and the secondary crown develops from water shoots.
Water shoots are shoots formed from dormant buds.
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ACKNOWLEDGEMENTS
The authors are grateful to the staff and graduate students of the Institute of Natural Sciences of the Russian Academy of Sciences and the staff of the Tellermanovsky experimental forestry who took part in the field study.
Funding
The work was carried out on the subject of State Assignment no. NIOKTR AAAA-A19-119053090075-4, “Factors and mechanisms of the stability of natural and artificial forest biogeocenoses of the forest–steppe zone and arid regions of European Russia under the conditions of natural–anthropogenic transformations.”
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Kaplina, N.F., Kulakova, N.Y. Phytomass and Carbon and Nitrogen Reserves in the Upland Oak Forests of the Southern Forest Steppe. Arid Ecosyst 11, 27–33 (2021). https://doi.org/10.1134/S2079096121010091
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DOI: https://doi.org/10.1134/S2079096121010091