衰退したスギの葉中の窒素と硫黄の濃度(酸性雨特集(2))

概要

論文の詳細を見る
Needles of Sugi were collected in a declined forest in Gunma prefecture and in a non-declining forest in Ibaraki predecture in October. The concentrations of nitrogen and sulfur in current and one-year-old needles of these samples were measured. Though nitrogen concentrations in one-year-old needles were lower than those in current needles in both forests, the decreasing rates of these concentrations were greater in needles of declined trees than those of in non-declined trees. Nitrogen uptake was considered to be restricted in the declined forest. The sulfur concentrations were appoximately 0.04-0.12% in all samples. The sulfur concentrations in dead needles were almost the same as those in linving needles, therefore sulfur recovery from needles at the defoliation is considered to be small.
森林立地学会の論文
1991-06-30