We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The environmental signals of stable carbon isotope in various tree-ring components of Pinus tabulaeformis.
- Authors
Ma, Linmin; Duolikun, Rena; Jianfu, Zhao; Lorenzini, Giacomo
- Abstract
Chinese pine ( Pinus tabulaeformis) trees were sampled in the Helan Mountain, northwest China. The stable carbon isotope (δC) values of whole wood, holocellulose and alpha-cellulose in tree rings over 30 years (1968-1997) were measured to study the δC response of different tree-ring components to past environmental change. There were obvious differences in the δC values of the three components. The Pearson correlation coefficient between the δC of alpha-cellulose and that of holocellulose was 0.547 ( ρ < 0.01); between alpha-cellulose and whole wood, the coefficient was −0.126 ( ρ > 0.10); between holocellulose and whole wood, the coefficient was −0.056. Correlation function analyses indicated that the δC content of tree-ring alpha-cellulose correlated strongly with the average temperature from June to August ( r = 0.427, ρ < 0.05), more than that of holocellulose (0.324, ρ < 0.10) or total wood (−0.245, ρ > 0.10). Significant correlations were observed between δC of tree-ring alpha-cellulose and the precipitation from the current year's February to July ( r = −0.514, ρ < 0.01) that were much higher than that of holocellulose (−0.481, ρ < 0.05) or total wood (−0.249, ρ > 0.10). A significant correlation (−0.545, ρ < 0.01) was also found between the ring width and the δC residual chronologies. These results suggest that more past environmental information is retained in the δC of tree-ring alpha-cellulose. Thus, the δC of alpha-cellulose of tree rings is the most suitable among the studied parameters for reconstructing the past climatic conditions during the growing season. The δC values of other organic compounds in Pinus tabulaeformis xylem were affected by the external environment after carbon was fixed from the atmosphere.
- Subjects
HELAN Mountains (China); CHINA; PINE; CARBON isotopes; WOOD chemistry; ORGANIC compounds; XYLEM; EFFECT of environment on plants
- Publication
Trees: Structure & Function, 2011, Vol 25, Issue 3, p435
- ISSN
0931-1890
- Publication type
Article
- DOI
10.1007/s00468-010-0518-6