Palaeoclimate potential of New Zealand Manoao colensoi (silver pine) tree rings using Blue-Intensity (BI)

被引:26
作者
Blake, Stephanie A. P. [1 ]
Palmer, Jonathan G. [1 ,2 ]
Bjoerklund, Jesper [3 ]
Harper, Jason B. [4 ]
Turney, Chris S. M. [1 ,2 ]
机构
[1] Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
[2] Univ New South Wales, Australian Res Council, Ctr Excellence Australian Biodivers & Heritage CA, Sydney, NSW 2052, Australia
[3] Swiss Fed Inst Forest Snow & Landscape Res WSL, Dendrosci, Birmensdorf, Switzerland
[4] Univ New South Wales, Sch Chem, Sydney, NSW 2052, Australia
基金
澳大利亚研究理事会;
关键词
Proxy-climate reconstructions; Temperature sensitivity; Southern hemisphere climate; Wood density; LATEWOOD DENSITY; TEMPERATURE RECONSTRUCTION; ENVIRONMENTAL-FACTORS; NORTHERN-HEMISPHERE; SUMMER TEMPERATURES; CLIMATE VARIABILITY; BRITISH-COLUMBIA; WOOD FORMATION; NORWAY SPRUCE; TIME-SERIES;
D O I
10.1016/j.dendro.2020.125664
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
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.
引用
收藏
页数:9
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