Contents of monosaccharides in the hydrolysates of some forest soil horizons.
1989
Kim J.J. | Jang Y.S. | Shin Y.O.
Monosaccharide content of four forest soils was analyzed. Two soils under coniferous forest trees and another two under deciduous forest trees of Mts. Zeombong and Odae in Kangwondo were sampled from the surface horizon down into the subhorizons. The largest amount of monosaccharide is found in the surface organic horizon of each soil and with increasing depth the amount decreases as might be expected considering total organic matter content. Hexoses (galactose, glucose, mannose) predominate over pentoses (arabinose, ribose, xylose) and deoxyhexoses (fucose, rhamnose), the latter being in the smallest amount. Glucose is the most abundant monosaccharide follows the order of glucose > mannose > galactose > arabinose > xylose > rhamnose > fucose > ribose. Very little amount of ribose is present even in organic horizons of coniferous forest soils. In samples taken from deciduous forest soils ribose is virtually absent. The relative proportion of monosaccharide to the total soil organic matter decreases with increaing depth, which may result from the effect of prolonged humification. The total monosaccharide in the organic surface layer amounts to 27-50 % of the total organic carbon or 15.7-29 % of the total organic matter. Hexoses alone take the largest share of 20-38 % of the carbon, or 12-22 % of the organic matter.
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