Earth and Planetary Sciences
8 years ago

Tree ring study reveals limitations in climate analysis methods.

Acta Mineralogica Sinica
MOBILITY OF DIFFERENT ORGANIC COMPONENTS IN TREE RINGS:CARBON ISOTOPIC CONSTRAINTS
Yin Lu, Bin Lian

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Tree rings from a Chinese red pine were studied to see how different organic components move over time. The researchers looked at carbon isotopes in various fractions of the tree rings. They found that certain fractions showed yearly changes in carbon isotopes, while others did not. Saponifiable lipids in the tree rings were found to move horizontally and longitudinally, meaning they have the same isotopic composition in different rings after 18-21 years. This suggests that saponifiable lipids and whole wood cannot be used for isotopic analysis in studying climate through tree rings.