Tree-ring width of Quercus species from historical object sample 2161B/21A, N...

Species: Quercus species; No of rings: 71; first year: 1378; end year: 1449; Pith: not applicable; Heartwood: complete; Sapwood: complete; Number of sapwood rings: 13; Last ring...物种：栎属（Quercus）物种；总年轮数：71；年轮起始年份：1378；年轮终止年份：1449；髓心（Pith）：不适用；心材（Heartwood）：完整；边材（Sapwood）：完整；边材年轮数：13；最后一轮年轮……