The effects of tracheid dimensions on variations in maximum density of Picea glehnii and relationships to climatic factors
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An investigation was made of the effects of tracheid dimensions on variations in the maximum density of Picea glehnii Mast., which were associated with climatic changes. Radial cell diameter and the thickness of the tangential cell walls of the last-formed cells in 90 annual rings of nine trees with different annual ring widths were analyzed by image analysis. Correlations between maximum density and tracheid dimensions indicated that changes in maximum density were due mainly to changes in cell wall thickness of the last-formed cells in annual rings and were not due to changes in radial cell diameter. The effects of climatic factors on tracheid dimensions were examined by application of dendroclimatological techniques. A chronology of cell wall thickness that represented common signals among trees was established. Simple correlation and response function analyses of the chronology revealed that cell wall thickness was influenced positively by summer temperature and negatively by precipitation in August, and these responses were similar to those of maximum density. The study demonstrated that variations in maximum density were due to variations in the cell wall thickness of the last-formed cells, which varied depending on the weather in summer.
- The effects of tracheid dimensions on variations in maximum density of Picea glehnii and relationships to climatic factors
Volume 14, Issue 4 , pp 223-229
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- Key words Maximum density
- Cell wall thickness
- Radial cell diameter
- Climatic factors
- Picea glehnii Mast.
- Author Affiliations
- A1. Wood Quality Laboratory Forestry and Forest Products Research Institute Tsukuba 305-8687, Japan e-mail: email@example.com Tel.: +81-298-73-3211 ext. 575, Fax: +81-298-73-3798, JP
- A2. Department of Forest Science, Faculty of Agriculture Hokkaido University, Sapporo 060-8589, Japan, JP
- A3. Komeno-no Forest Research Center Experimental Forest of Ehime University, Ohino-machi 145-2 Matsuyama 791-0134, Japan, JP