Physicochemical and Microbiological Characteristics of Tundra Soils on the Rybachii Peninsula

Evdokimova G. A.; Mozgova N. P.; Myazin V. A.

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Physicochemical and Microbiological Characteristics of Tundra Soils on the Rybachii Peninsula

机译：寒云草坪上苔原土壤的物理化学和微生物特征

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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 x 10(9) to 4.8 x 10(9) 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).

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《Eurasian Soil Science》 |2018年第1期|共8页
作者
Evdokimova G. A.; Mozgova N. P.; Myazin V. A.;
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作者单位

Russian Acad Sci Inst Ind Ecol Problems North Kola Sci Ctr Akademgorodok 14a Apatity 184209 Murmansk Oblast Russia;

Russian Acad Sci Inst Ind Ecol Problems North Kola Sci Ctr Akademgorodok 14a Apatity 184209 Murmansk Oblast Russia;

Russian Acad Sci Inst Ind Ecol Problems North Kola Sci Ctr Akademgorodok 14a Apatity 184209 Murmansk Oblast Russia;

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正文语种 eng
中图分类土壤学;
关键词
Rybachii Peninsula; tundra soils; microbial biomass; biogenicity of soils;

机译：Rybachii半岛;Tundra土壤;微生物生物量;土壤生物发生;

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Physicochemical and Microbiological Characteristics of Tundra Soils on the Rybachii Peninsula

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