Abstract The crossdating of tree-ring series is typically based on tree-ring width sequences, which is a crude abstraction of the growth signal stored in tree rings. In contrast, intra-annual wood density data allows a much more detailed comparison of wood growth processes and new measurement techniques scale well to measure large amounts of samples. Thus, chronologies of intra-annual densitometric curves can be built. Here, we investigate to what extent intra-annual wood density information can improve crossdating. We evaluate different approaches on a data set of Norway spruce trees (Picea abies) and compare the results to standard methods that are based on ring width or maximum density. Our results show that intra-annual densitometric data indeed increases crossdating success rate notably for short tree ring series that cover less than 25 years.

中文翻译：

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年内密度信息在短年轮系列交叉测年中的潜力

摘要 年轮序列的交叉测年通常基于年轮宽度序列，这是对存储在年轮中的生长信号的粗略抽象。相比之下，年度内木材密度数据允许对木材生长过程进行更详细的比较，新的测量技术可以很好地测量大量样品。因此，可以建立年内密度曲线的年表。在这里，我们调查了年内木材密度信息在多大程度上可以改善交叉测定。我们评估了挪威云杉（Picea abies）数据集的不同方法，并将结果与​​基于年轮宽度或最大密度的标准方法进行比较。我们的结果表明，年度内密度数据确实显着提高了交叉测年的成功率，尤其是对于覆盖不到 25 年的短年轮系列。