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Palaeoclimate potential of New Zealand Manoao colensoi (silver pine) tree rings using Blue-Intensity (BI)
Dendrochronologia ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.dendro.2020.125664
Stephanie A.P. Blake , Jonathan G. Palmer , Jesper Björklund , Jason B. Harper , Chris S.M. Turney

Abstract This study investigates if Blue Intensity (BI) parameters are capable of capturing enhanced climatic signals from a key New Zealand dendrochronological species when compared to ring-width (RW) measurements. Three BI parameters (earlywood mean, latewood mean and maximum latewood) recorded generally superior correlations to temperature than conventional RW measurements and these correlations appeared more stable over time. For all BI parameters, austral summer (Dec-Feb) was identified as the strongest reconstructive window. However, all the BI parameters required greater sample replication than RW to reach widely accepted thresholds of chronology reliability, highlighting the need for further examination into the physiological controls on the BI signal. Despite the need for further research, this pilot study is strongly encouraging for the wider application of BI in Southern Hemisphere dendrochronology.

中文翻译:

使用蓝色强度 (BI) 的新西兰 Manoao colensoi(银松)年轮的古气候潜力

摘要 本研究调查了与环宽 (RW) 测量值相比,蓝色强度 (BI) 参数是否能够捕获来自新西兰主要树木年代学物种的增强气候信号。三个 BI 参数(早材平均值、晚材平均值和最大晚材)与温度的相关性通常比传统的 RW 测量值更高,并且这些相关性随着时间的推移显得更加稳定。对于所有 BI 参数,南方夏季(12 月至 2 月)被确定为最强的重建窗口。然而,所有 BI 参数都需要比 RW 更大的样本复制才能达到广泛接受的年表可靠性阈值,这突出表明需要进一步检查 BI 信号的生理控制。尽管需要进一步研究,
更新日期:2020-04-01
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