Tree-ring width measurements of Douglas fir from Thurnau from 1971 to 2021
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Wood samples from Douglas fir trees were taken using an increment borer. From each tree two opposing increment cores were taken at breast height. The sampled trees stood in an...
采用树木生长锥（Increment Borer）采集花旗松的木材样本。每株林木在胸高位置采集两根相向的生长芯样。本次采样的林木生长于……
