Eurasian Soil Science ( IF 1.4 ) Pub Date : 2022-04-22 , DOI: 10.1134/s1064229322040093 I. D. Grodnitskaya 1 , L. V. Karpenko 1 , O. E. Pashkeeva 1 , N. N. Goncharova 2 , V. V. Startsev 2 , A. A. Dymov 2 , O. A. Baturina 3
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Abstract
Key plots of hydromorphic and semihydromorphic peat soils of oligotrophic bogs were studied in the area of the Middle Yenisei Station of the Institute of Forest, Siberian Branch of the Russian Academy of Sciences. Hydromorphic soils were classified as Fibric Histosols (FHS1 and FHS2), and semihydromorphic soils were classified as Histic Albic Podzols (PZ1 and PZ2). It was found that fires had a significant impact on the initial waterlogging of the studied territory. The pyrogenic horizons of peat soils were generally enriched in ash elements and differed from one another in the contents of carbon and nitrogen. The functional activity of microbial communities in the studied soils was low, and this affected the content of microbial biomass and respiration rate. The restoration of microbial activity in pyrogenic horizons proceeded slowly because of the deficit of available organic matter. The qualitative and quantitative compositions of bacterial biomes and mycobiomes of peat soils differed in the studied plot and soil horizons. The number and species diversity of prokaryotes in all areas was quite high. Representatives of Proteobacteria and Archaea played the leading role in the development of pyrogenic horizons; the number of their operational taxonomic units (OTUs) in these horizons was significantly higher than that in the nonpyrogenic horizons, where Acidobacteria predominated. The mycobiomes of the FHS1 and FHS2 plots were significantly less abundant and had lower species diversity as compared to the PZ1 and PZ2 plots. The number of fungi was higher in the nonpyrogenic horizons; the number and diversity of fungi decreased in the pyrogenic horizons. The mycobiomes of the upper pyrogenic horizons included groups of carbotrophic fungi that can develop on charcoal.
中文翻译：
森林火灾对克拉斯诺亚尔斯克地区 Sym-Dubches 河口北部沼泽贫营养泥炭土和 Gleyed Pead Podzols 微生物特性的影响
摘要
在俄罗斯科学院西伯利亚分院森林研究所中叶尼塞站区域研究了贫营养沼泽的水变和半水变泥炭土关键样地。水变土壤被归类为纤维组织溶胶（FHS1 和 FHS2），半水变土壤被归类为组织白灰泥土（PZ1 和 PZ2）。研究发现，火灾对研究区域的初始内涝产生了重大影响。泥炭土的热解层普遍富含灰分，碳和氮的含量不同。研究土壤中微生物群落的功能活性较低，这影响了微生物生物量的含量和呼吸速率。由于可用有机物的缺乏，热原层中微生物活性的恢复进展缓慢。泥炭土壤的细菌生物群落和真菌生物群落的定性和定量组成在研究地块和土壤层位上有所不同。各地区原核生物数量和物种多样性均较高。变形菌和古生菌的代表在热原层的发展中发挥了主导作用；它们在这些视野中的操作分类单位（OTU）的数量显着高于在酸杆菌占主导地位的非热源视野中的数量。与 PZ1 和 PZ2 地块相比，FHS1 和 FHS2 地块的微生物群落丰度显着降低，物种多样性也较低。非热源层的真菌数量较高；热原层中真菌的数量和多样性减少。上层热原层的真菌群落包括可以在木炭上发育的碳营养真菌群。
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