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首页> 外文期刊>Eurasian Soil Science >Physicochemical and Microbiological Characteristics of Tundra Soils on the Rybachii Peninsula
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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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摘要

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).
机译：Rybachii半岛由正古代沉积岩组成，与其地质结构，地形形式和家长岩石中的kola半岛的其余部分大幅不同。它由在冰片上形成的Al-Fe-Humus土壤主导，其中包括局部岩石片段的混合物，包括板岩。半岛的苔原土壤的有机视野比康拉半岛的邻近大陆的花岗岩上的酸少。有机化环中可交换钙的含量从17.4〜68.0变化，水溶性碳的含量达到400mg / 100g的总土壤有机物质含量的1-2％。苔原土壤有机视野中的细菌总数从3.5×10（9）到4.8×10（9）个细胞/ g;细菌生物量从0.14到0.19 mg / g。真菌菌丝体的长度及其生物质在有机视野中是显着的（＆amp; 1000 m / g土壤）。有机化物中的真菌菌丝体的生物量超过细菌生物量七次在Podzols（alAlic podzols）中七次，并在Podbur（诱惑豆荚），干泥炭土壤（叶状物溶胶）和低泥泥土壤中（Sapric组织）。

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