Plot size is usually 20mx20 m, sometime 10mx10m.調査区サイズ;通常20mx20m、場合によっては10mx10m。
サンプリングの説明:
Survey was done at 28 sites including several forest types such as deceduous broadleaf, deceduous coniferous, evergreen coniferous, mixed forest.流域内28か所で森林調査を行い、落葉広葉樹、落葉針葉樹、常緑針葉樹、針広混交林で地上部現存量を推定。