Tree-ring width of Picea abies from historical object sample 6487B/09M, Netherlands, Groningen@en
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Species: Picea abies; No of rings: 75; first year: 1721; end year: 1796; Pith: not applicable; Heartwood: absent; Sapwood: absent; Number of sapwood rings: 0; Last ring under bark: absent
物种：欧洲云杉（Picea abies）；年轮数：75；初始年份：1721；终止年份：1796；髓心：不适用；心材：缺失；边材：缺失；边材年轮数：0；树皮下最后年轮：缺失
创建时间：
2026-04-16
