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Microbiological Characteristics of Soils of the Upper Delta of the Selenga River under Arid Conditions (Baikal Region)

机译:干旱条件下Selenga河上三角洲土壤的微生物学特征(贝京地区)

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摘要

The abundance, ratio of ecologo-trophic groups of microorganisms, microbial biomass, and predominant members of the taxonomic composition of microbial complexes are indicators of the different ecological states of soils of the central floodplain and islands of the upper delta of the Selenga River under arid conditions. The highest coefficients of oligotrophy with an increased share of microorganisms growing on the nitrogen-free Ashby medium, as well as predominance of Arthrobacter bacteria, were determined in low-moistened soils of the islands. In general, low microbiological activity (in comparison with the soils of the central floodplain depressions), resulting from a lack of moisture, is observed in these soils despite the uncontrolled cattle grazing in the areas of the latter.
机译:微生物复合物的微生物组成的生态营养,微生物组成的生态营养学组和主要成员的丰富,是在干旱下的SELENGA RIVER中央洪泛区和苏格兰群岛的不同生态状态的指标使适应。在岛状的低润湿的土壤中测定了在氮肥血管培养基上生长的微生物份额增加的最高系数的寡噬细胞的最高系数,以及关节杆菌细菌的优势。通常,在这些土壤中观察到由于缺乏水分而导致的低微生物活性(与中央泛洪叶凹陷的土壤相比),尽管在后者的区域中放牧地放牧。

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  • 来源
    《Biology Bulletin》 |2019年第1期|96-104|共9页
  • 作者

    Makushkin E. O.;

  • 作者单位

    Russian Acad Sci Inst Gen & Expt Biol Siberian Branch Ulan Ude 670047 Russia;

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  • 正文语种 eng
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