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Stem and branch sizes of Ubame oak (Quercus phillyraeoides) in Muroto region, Kochi Prefecture, Japan.

Version 2 2023-06-06, 07:52
Version 1 2023-06-05, 06:32
posted on 2023-06-06, 07:52 authored by Kenta Tabuchi, Takeshi Kudo, Kai Moriguchi

Individual ID: Individual identifiers from A to I.

DBH: Diameter at 1.3 m height calculated with the area of tree cooky (with bark, just after cut) measured using a CCD image scanner.

Tree height: The longest path length from the root to the branch top using a tape measure aligned with stems.

Branch ID: Stem and branch identifiers of each individual (start-end). "Root" denotes the root of each tree. "End" denotes the ends of branches. The numbers following "End" indicates that there were plural branches. 

Length: Branch length measured at 1 cm resolution using a tape measure aligned with stems.

Root diameter: Diameter of the root side of each branch measured using tape measures at 0.1 cm resolution. Several thin branches of A and B were measured using a caliper at 0.01 cm resolution.

End diameter: Diameter of the top side of each branch measured by the same method with root diameters.

Note: Branches with root diameters larger than 1.5 cm (for A and B: 1.0 cm) were measured. Each tree had numerous thinner branches but not measured.

Survey date: 29 Sep 2021 - 15 Oct 2021.

Coordinate area: 33°19'05"N 134°07'13"E - 33°19'14"N 134°07'21"E


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Title (in Japanese)


Description (in Japanese)

Individual ID: 個体ID. DBH: 地際から1.3mの位置で採取した円盤を伐倒直後にCCDスキャナでスキャンし, その断面画像から計測して皮付き断面積と等しい真円の直径を求めた. Tree height: 樹幹長. 伐倒後にメジャーを幹に沿わせて計測した(ウバメガシは曲がりが多いため). 始点は地際. 終点は, この計測方法で最も距離の長くなる梢端. Branch ID: 幹・枝のIDで, 始点と終点の組み合わせで表現されている, "Root" は立木の地際位置. "End" は梢端. 同一始点から複数の梢端が接続していた場合, "End"の後ろに番号をつけて区別している. Length: 1cm単位で計測された幹・枝の長さ. これらの長さはメジャーを幹に沿わせて計測した. Root diameter: 地際側の直径. 直径巻尺を使い, 0.1cmまで読み取った. 個体A・Bの細い幹については, ノギスを用いて0.01cmまで読み取っている. End diameter: 梢端側の直径. 計測方法はRoot diameterと同じ. 注: 個体A・Bについては地際側の直径が1cmの枝を, その他の個体については地際側の直径が1.5cmの枝を計測した. 各供試木の梢端付近にはそれより細い無数の枝が存在したが, それらのサイズは計測していない. 調査・計測日: 2021年09月29日 - 2022年10月15日. 調査地の緯度経度: 33°19'05"N 134°07'13"E - 33°19'14"N 134°07'21"E の範囲.

Manuscript title (in Japanese)


Authors (in Japanese)

田淵 賢汰,工藤 豪士,守口 海


© 2023 Kenta Tabuchi, Takeshi Kudo, Kai Moriguchi

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