Hygroscopic Properties of Forest Floor in Coniferous and Deciduous Plantations in Middle Siberia
S. R. LOSKUTOV, O. A. SHAPCHENKOVA, E. F. VEDROVA, A. A. ANISKINA, L. V. MUKHORTOVA
V. N. Sukachev Institute of forest, SB RAS, 660036, Krasnoyarsk, Akademgorodok, 50/28
Keywords: forest floor, water vapor sorption, store of hygroscopic water
Abstract
The hygroscopic properties of forest floor in coniferous (Larix sibirica Ledeb., Pinus sylvestris L.) and deciduous (Populus tremula L., Betula fruticosa Pall.) plantations were studied using the isotherms of water vapor sorption and methods of thermal analysis (TG, DSC). Sub-horizons OL and OF in larch and pine plantations had the larger monolayer adsorption capacity. The forest floor in larch plantation was characterized by the highest hydrophilicity. Results of DSC indicated that hygroscopic water had higher binding with the substance of sub-horizon OL in coniferous and sub-horizon OH in deciduous plantations. The forest floor in coniferous plantations was characterized by higher store of hygroscopic water than in deciduous ones.
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