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- Title
Effect of the biota diversity on the composition of low-molecular-weight water-soluble organic compounds in southern tundra soils.
- Authors
Shamrikova, E.; Kubik, O.; Punegov, V.; Gruzdev, I.
- Abstract
Water extracts from the organic horizons of southern-tundra loamy permafrost-affected soils (a surface-gleyed tundra soil, a surface-gleyed soddy tundra soil (Haplic Stagnosols (Gelic)), and a peaty tundra soil (Histic Cryosol (Reductaquic)) and their undecomposed moss layers have been analyzed. The total weight concentration of the cations (Ca, Mg, K, and Na) determined by the atomic absorption method reaches 20 mg/dm in the organic horizons and 40-90 mg/dm in the undecomposed moss layers. Potassium and calcium ions dominate in all the organic horizons (80-90% of the total weight); potassium ions prevail in the mosses (about 70%). The weight concentration of carbon in the water-soluble organic compounds is 0.04-0.07 g/dm in the organic horizons and 0.20-0.40 g/dm in the undecomposed moss layers. The content of low-molecular-weight organic compounds (alcohols, carbohydrates, and acids) identified by gas chromatography and chromatomass spectrometry is 1-30 mg/dm in the organic horizons of the soils and 80-180 mg/dm in the mosses, which does not exceed 26% of the total organic carbon in the extracts.
- Subjects
ORGANIC compound content of soils; MOLECULAR weights; TUNDRA soils; BIODIVERSITY; SOIL horizons; PERMAFROST; LOAM soils; GAS chromatography
- Publication
Eurasian Soil Science, 2014, Vol 47, Issue 3, p173
- ISSN
1064-2293
- Publication type
Article
- DOI
10.1134/S1064229314030077