Physicochemical and Microbiological Characteristics of Tundra Soils on the Rybachii Peninsula
| Autor: | Vladimir A. Myazin, G. A. Evdokimova, N. P. Mozgova |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Peat Soil organic matter Soil Science Soil classification 04 agricultural and veterinary sciences Tundra Podzol 03 medical and health sciences 030104 developmental biology Environmental chemistry Soil water 040103 agronomy & agriculture Histosol 0401 agriculture forestry and fisheries Environmental science Parent rock Earth-Surface Processes |
| Zdroj: | Eurasian Soil Science. 51:81-88 |
| ISSN: | 1556-195X 1064-2293 |
| Popis: | The Rybachii Peninsula is composed of Proterozoic sedimentary rocks and differs sharply from the rest of the Kola Peninsula in its geological structure, topographic forms, and parent rocks. It is dominated by Al–Fe-humus soils formed on moraines with an admixture of local rock fragments, including slates. Organic horizons of tundra soils in the peninsula are less acid than those on granitoids of adjacent mainland of the Kola Peninsula. The content of exchangeable calcium in the organic horizons varies from 17.4 to 68.0 cmolc/kg, and the content of water-soluble carbon reaches 400 mg/100 g amounting to 1–2% of the total soil organic matter content. The total number of bacteria in the organic horizons of tundra soils varies from 3.5 × 109 to 4.8 × 109 cells/g; and bacterial biomass varies from 0.14 to 0.19 mg/g. The length of fungal mycelium and its biomass in the organic horizons are significant (>1000 m/g soil). The biomass of fungal mycelium in the organic horizons exceeds the bacterial biomass by seven times in podzols (Albic Podzols) and by ten times in podbur (Entic Podzol), dry-peat soil (Folic Histosol), and low-moor peat soil (Sapric Histosol). |
| Databáze: | OpenAIRE |
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