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Abstract The effects of thinning on fresh-leaf nitrogen concentration, leaf-litter nitrogen concentration, and leaf-fall phenology were evaluated over 3 years in two evergreen hinoki cypress (Continue Reading
  • Atsushi Torii, Yoshiyuki Kiyono
  • Environmental Science
  • 1992 (First Published: 10 November 1992)
  • 近畿地方各地の平地 でみ られ るスギの衰退 の原因を究明す るアプ ローチのひ とつ として,ス ギの衰退 の程度 と表層土壌 の酸性度 との関係 な どを解析 した。調 査は1987~1991年 にかけて,近 畿地方の平地の 社寺境内 など274ヵ 所で スギ高齢木(80年 生以上)を 対象に行 った。 その結果,一 部 の土壌 ではpHが 4未 満の強酸性を示 し,ま た,一 般Continue Reading
  • Shigehiro Ishizuka, Kimiyasu Kawamuro, Akihiro Imaya, Atsushi Torii, Kazuhito Morisada
  • Chemistry
  • Biogeochemistry
  • 2013 (First Published: 1 April 2014)
  • Black Soil in Japanese forests is believed to have formed under grasslands, on the basis of pollen and stable carbon isotopic analyses. Carbon stable isotope ratios (δ13C) have indicated that theContinue Reading