Water Quality of Acid-Rain Leachate from Representative Soils in Watershed of Lake Biwa.
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概要
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15 forest soils of different kind of type and mother rock were collected in Shiga Prefecture as representatives and studied. pH(H20) of each soil was found to be mainly influenced by soluble bases and soluble aluminium content. Then artificial acid rain of pH 3 was added to soils. Positive correlation was shown between soil pH(H<SUB>2</SUB>0) and "buffering capacity" defined as amount of added H+ before pH of soil leachates decreases to 3.5. Soils were classifiedinto 3 types with following characteristics from the viewpoint of buffer action and water quality of the leachate; (1) buffer action by exchagable bases is dominant, (2) exchangable bases primarily, and then Al play a important role of buffer action, and (3) buffer action by Al is dominant. Limestone Soils are classofied as type (1), and have much buffer capacity and little possibilities of being acidified. Soils whose mother rock is granite are classified as type (3), and have the largest possibilities of being acidified earliest and liqueting out much amount of Al.
- 社団法人 環境科学会の論文
社団法人 環境科学会 | 論文
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