人口酸性雨を用いた柑橘類樹園地土壌溶出水の水質特性とその湖沼微生物の増殖に及ぼす影響

概要

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The grove soil for a better fertilization contains phosphorus in high concentration. In this study, the water quality of leachate through grove soil due to artificial acid rain was investigated, and effects on the growth of aquatic microorganisms were studied. Eluviation of phosphorus and aluminum was caused by artificial acid rain. The maximum concentrations of both the materials were 10mgP · l-1 and 10mgAl · l-1 respectively, when the artificial acid rain of pH 3.0 was added. In the case of pH 4.0, they were 1.0 mgP · l-1 and 0.5mgAl · l-1 respectively. On the other hand, using microcosm system, it was observed that the growth of Euglena gracilis Z was not inhibited, if pH was more than 3.4 and the concentration of aluminum was less than 1.0 mg · l-1. So it is suggested that there would be the possibility of the algal growth caused by the nutrients which were eluviated by acid rain of pH 4.0.
社団法人　日本水環境学会の論文
2000-08-10