Abstract

Despite the widespread use of the taxon “mesotrophic (transitional) peat soils” in the present-day Russian and foreign pedology, including some fundamental publications in this field, its diagnostic features are still uncertain, and this taxon is not included in the recent classification of Russian soils. The proposed criteria based on botanical features—botanical composition of peat soils and indicator plants—will allow separating mesotrophic type from eutrophic and oligotrophic types of peat soils. Special attention is paid to the distinction between mesotrophic and oligotrophic peat soils in accordance with the specific features of mires in northern West Siberia. Among 32 peat soil profiles studied in the Numto Nature Park, 19 profiles were classified as mesotrophic peat soils and 13 profiles, as oligotrophic soils. Owing to the spatial and temporal dynamics of vegetation in large- and flat-topped mound peat complexes, the soils of their hollows (flarks) were in most cases assigned to the oligotrophic type. The soils of aapa mires, as well as mires on low alluvial terraces, river floodplains, and runoff hollows dissecting slopes of the Sibirskie Uvaly Ridge were mainly classified as mesotrophic peat soils.

中文翻译：

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西西伯利亚北部地区的中营养和中营养沼泽土壤：在中营养泥炭土壤类型框架内进行植物诊断的可能性

摘要

尽管当今俄罗斯和国外的土壤学中广泛使用“中营养（过渡性）泥炭土”分类单元，包括该领域的一些基础出版物，但其诊断特征仍不确定，该分类单元不包括在最近的分类中俄罗斯土壤。基于植物特征（泥炭土壤和指示植物的植物成分）的拟议标准将允许将中营养类型与富营养和贫营养类型的泥炭土壤分开。根据西西伯利亚北部泥潭的具体特征，应特别注意区分中营养泥炭土和贫营养泥炭土。在Numto自然公园研究的32个泥炭土壤剖面中，有19个剖面被分类为中营养泥炭土，而13个剖面被分类为贫营养土。由于大型和平顶丘陵泥炭复合体中植被的时空动态，在大多数情况下，其空心（侧腹）的土壤被归为贫营养型。Aapa泥沙的土壤，以及低冲积阶地的泥潭，河流洪泛平原和Sibirskie Uvaly山脊的径流凹陷解剖斜坡都被分类为中营养泥炭土。