Vegetation and Pedogenesis on Pyrogenic Substrates of Former Peat Soilsстатья
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Дата последнего поиска статьи во внешних источниках: 23 декабря 2016 г.
Аннотация:The role of vegetation and chemical factors in the development of the primary pedogenesis and evolution of pyrogenic formations resulting from fires on drained peat soils was studied. Over four years after the fire, a shallow (1 cm) humus horizon is formed on the surface of the ashy horizon of the pyrogenic formations. For six years, its thickness increases up to 3–4 cm. The dynamics and productivity of the plant cover on the pyrogenic formations were investigated. The dominant plant species were restricted to certain pyrogenic formations. The formation of stable phytocenoses and chemical transformation of substrates are the factors governing the primary pedogenesis on pyrogenic substrates. Four stages in the evolution of the pyrogenic formations were revealed. At the fourth stage, some features appeared that permit us to recognize the development of soddy soils on the pyrogenic substrates (i.e., soddy pyrogenic–mucky, soddy pyrogenic–sandy soils, etc.).