首页|Microdensitometric records from humid subtropical China show distinct climate signals in earlywood and latewood

Microdensitometric records from humid subtropical China show distinct climate signals in earlywood and latewood

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  • NSTL
  • Elsevier
Blue intensity (BI) from tree rings is a technique that has been widely explored for temperature reconstruction purposes in middle and high latitudes. However, it is still rather untested at lower latitudes and in drier climates, particularly in subtropical areas. Here, we develop the first series of BI-based tree-ring parameters (earlywood BI, EWBI; latewood BI, LWBI and Delta BI, the difference between LWBI and EWBI) in humid subtropical China from the species Pinus massiniana. Although the BI parameters have weaker inter-series correlations than do ring widths, they are generally better correlated with climate parameters. Our study shows a positive temperature response in the EWBI parameter and negative responses in the LWBI and Delta BI parameters. Interestingly, the correlation pattern is almost the opposite of that observed at high latitudes, where there is a pronounced positive sensitivity of the LWBI/Delta BI/MXBI parameters to temperature.

Blue intensityTree-ring widthCell wall thicknessHumid subtropical China

Cao, Xinguang、Fang, Keyan、Chen, Ping、Zhang, Peng、Bjorklund, Jesper、Pumijumnong, Nathsuda、Guo, Zhengtang

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Fujian Normal Univ, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Cangshan Campus, Fuzhou 350007, Peoples R China

Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Box 460, S-40530 Gothenburg, Sweden

Swiss Fed Inst Forest Snow & Landscape Res WSL, Birmensdorf, Switzerland

Mahidol Univ, Fac Environm & Resource Studies, 999 Phutthamonthon Rd4, Phutthamonthon 73170, Nakhon Pathom, Thailand

CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China

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2020

10.1016/j.dendro.2020.125764

Dendrochronologia

Dendrochronologia

ISTP
ISSN：1125-7865
年,卷(期)：2020.64
  • 10
  • 76