Sapwood area and leaf area of Japanese cypress in Kyushu University Forest

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  • Tsuruta Kenji
    Kasuya Research Forest, Faculty of Agriculture, Kyushu University
  • Kume Tomonori
    School of Forestry and Resouce Conservation, National Taiwan University
  • Komatsu Hikaru
    Kasuya Research Forest, Faculty of Agriculture, Kyushu University
  • Otsuki Kyoichi
    Kasuya Research Forest, Faculty of Agriculture, Kyushu University

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  • 福岡演習林におけるヒノキの辺材面積と葉面積
  • フクオカ エンシュウリン ニ オケル ヒノキ ノ ヘンザイ メンセキ ト ハ メンセキ

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Abstract

Sapwood and leaf have roles for water pathways in a tree. Their areas are important information for transpiration estimates. Also, the balance between sapwood area and leaf area is important for understanding a biologifal structure. We measured sapwood area and leaf area for 12 Japanese cypress (Chamaecyparis obtusa) trees in Kasuya Research Forest. We open the data for multiple purposes. Because their areas are generally estimated from area specific allometric equations using DBH, we developed the allometric equations. As a result, sapwood area (As_tree) and leaf area (AL_tree) are described as As_tree = 2.025DBH^1.4773 (R^2 = 0.97) and AL_tree = 2.025DBH^1.4773 (R^2 = 0.97) in the DBH range of 7.2 - 34.0cm, respectively. In addition, we listed the other data of the tree properties like leaf mass.

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