Earlywood and Latewood Stable Carbon and Oxygen Isotope Variations in Two Pine Species in Southwestern China during the Recent Decades.

ABSTRACT: Stable isotopes in wood cellulose of tree rings provide a high-resolution record of environmental conditions, yet intra-annual analysis of carbon and oxygen isotopes and their associations with physiological responses to seasonal environmental changes are still lacking. We analyzed tree-ring stable carbon (δ¹³C) and oxygen (δ¹⁸O) isotope variations in the earlywood (EW) and latewood (LW) of pines from a secondary forest (Pinus kesiya) and from a natural forest (Pinus armandii) in southwestern China. There was no significant difference between δ¹³C_EW and δ¹³C_LW in P. kesiya, while δ¹³C_EW was significantly higher than δ¹³C_LW in P. armandii. For both P.

SUBMITTER: Fu PL 

PROVIDER: S-EPMC5223062 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature