Akami

Japanese: あかみ

…Some conifers contain resin canals and resin cells, and produce resin. In the cross section of a log, whether coniferous or broadleaf, the whitish outer part is called sapwood, and the dark central part is called heartwood. Sapwood is rich in nutrients and rots easily, but heartwood has heartwood substances formed and is generally resistant to decay. In the case of conifers, the moisture content of standing trees is around 40% in heartwood, but can reach 100-200% in sapwood. …

*Some of the terminology explanations that mention "Akami" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…針葉樹では樹脂道や樹脂細胞を含んでいて，やにを出すものがある。　針葉樹，広葉樹を問わず，丸太の横断面で外周部の色の白っぽい部分を辺材(しらた)，中心部の濃色の部分を心材(あかみ)と呼び，辺材は養分が多く腐りやすいが，心材には心材物質が形成されていて一般に腐りにくい。針葉樹の場合は立木の含水率は心材では40％前後だが，辺材では100～200％にも及ぶ。…

※「あかみ」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典第２版について | 情報

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