Stocks of Forest Litter in the Oak Forests of the Chernobyl Nuclear Power Plant Exclusion Zone

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Forest litter plays a most important role in the migration of radioactive substances in biogeocenoses of the Chernobyl nuclear power plant exclusion zone. There is to date no information on the characteristics of litter in oak forests in this area. The aim of the study is to identify the main indicators of forest litter and factors influencing its accumulation in stands of the most common oak forests types (Quercetum oxalidosum, Q. aegopodiosum, Q. subalveto-fluvialis and Q. graminoso-fluvialis), occupying 61.1% of the oak forest formation in Belarusian sector of the Chernobyl NPP exclusion zone. It was found that the average values of their characteristics by forest types, obtained with an accuracy of 3.1–8.2%, vary in extremely narrow ranges: thickness – 1.7–2.9 cm, stocks – 1.6–2.7 kg m–2, addition density – 0.08–0.11 g cm–3. The forest litter is loose, in comparison with other regions of Eastern Europe within the boundaries of the natural range of oak they are, as a rule, less thick and with a smaller mortmass stock. Their total stock in the Chernobyl exclusion zone is about 200 thousand tons of absolutely dry matter. The thickness and stock of forest litter’s mortmass are very heterogeneous. They are characterized by high fluctuations in individual values and in average coefficients of variation (40–56%). The average values of thickness and stock differ significantly between most types of forests. These indicators are closely related to each other (r = 0.76). The density of the forest litter, despite the high coefficients of variation of average values (27–71%), is rather homogeneous. The formation of forest litters and their mortmass accumulation in the oak forests is determined by the cumulative effect of weather and climatic conditions, landscape, soil fertility and moisture and the quantity of forest litter with the leading role of soil moisture supply.

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作者简介

A. Uglyanets

Polesye State Radiation-Ecological Reserve

编辑信件的主要联系方式.
Email: dima.garbaruk.77@mail.ru
白俄罗斯, 7, Tereshkova St., Khoiniki, 247618

D. Garbaruk

Polesye State Radiation-Ecological Reserve

Email: dima.garbaruk.77@mail.ru
白俄罗斯, 7, Tereshkova St., Khoiniki, 247618

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