Tree-ring width of Quercus species from historical object sample 6551B/02A, N...

Species: Quercus species; No of rings: 77; first year: 1491; tree-death year: 1568; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 1;...物种：栎属（Quercus）物种；年轮数：77；初始年份：1491；树木死亡年份：1568；髓心：不适用；心材：完整；边材：不完整；边材年轮数：1；……