The Amount of Wet Deposition and the Process of the Growth of Saplings of Cryptomeria japonica, Quercus serrata and Lithocarpus edulis Planted on the Acidified Soil.

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In this paper, at first, the amount of wet acid deposition (SO42-, NO3- and so on.) is investigated in Tochigi Prefecture. Secondly, saplings of two-year-old Cryptomeria japonica, Quercus serrata and Lithocarpus edulis planted on the soil added sulfuric acid are reared for 12 weeks and then the concentrations of Mg2+, Ca2+, K+, Al3+, Mn2+ in the soil are analyzed to clarify the relationship between each ion concentration and the process of the growth of each sapling. Consequently, the process of the growth of these saplings is lower according to increase of H+ added to the soil and these weights of dry growth fell down. This is suggested that these growths are much related with Al3+ and Mn2+ that are eluted from the soil particle below pH 4.
水文・水資源学会の論文