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90Sr in the Components of Pine Forests of Belarusian Part of Chernobyl NPP Exclusion Zone

2019; Springer Nature; Linguagem: Inglês

10.1007/978-3-030-15314-4_9

1867-979X

Maksim Kudzin, Viachaslau Zabrotski, Dzmitry Garbaruk, Anatoliy Uhlianets,

Nuclear Issues and Defense

The significant part of the territory (43.3%) of State nature conservation research institution "Polessye State Radiation Ecological Reserve" is occupied by the pine stands. The forest litter in case of mossy, heath, bilberry types of pine forest remained to be the accumulator of large part of 90Sr retaining from 26 to 38% of its inventory. The common peculiarity of distribution of 90Sr through mineral part of soil profile in pine stands was its accumulation by upper 0–5 cm under litter layer with following decreasing in dipper layers. The part of 90Sr absorbed by mineral soil layer varied from 21 to 36% of its inventory in pine forests. The ability of tree organs and tissues of pine plantations to accumulate 90Sr was decreasing in the following order: bark > roots > wood on the automorphic (well drained) soils and roots > bark > wood on the semihydromorphic soils. The transfer of 90Sr to the wood of understory vegetation was decreased in the order: oak > Persian berry > mountain ash. For the leaves, the same row was mountain ash > Persian berry > oak. Each species of understory vegetation was characterized by its own specificity of 90Sr absorption by the organs and tissues. The content of 90Sr in species of alive soil cover in pine forests was decreasing in the following order: adderspit > dicranum moss > Schreber's big red stem moss. Their aboveground phytomass accumulated more 90Sr than roots. The experimental data described in the paper were received in the period 2014–2017.