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- Title
Relationship between sugar maple decline and corresponding chemical changes in the stem tissue
- Authors
Roy, D. N.; Hutchinson, T. C.; Pathak, S.; Mohamed, H. K.; Kinch, J. C.; McLaughlin, D. L.
- Abstract
Wood cores were taken at breast height of mature sugar maple (Acer Saccharum Marsh.) trees of approximately the same age from four sites in Ontario, Canada differing in soil characteristics and general treehealth. The soils of two of the sites were acidic (podzols), while the soils of the other two sites were calcareous (brunisols). Selectedelemental analyses using Neutron Activation Analysis were conducted on the soils and the xylem wood of the sugar maple trees, and the results were compared relative to tree-health. Aluminum in stem xylem was found to be significantly higher in declining trees (mean 7.7 ppm) relative to the healthy trees (mean 4.0) from the acidic sites, wherealuminum was freely available in the soil. Soil extractable aluminumwas also significantly higher in the soil adjacent to the declining trees (mean 5.10) compared to the healthy trees (mean 3.20). These results show that xylem aluminum contents reflect the increased availability of aluminum in acidifying soils and provide additional evidencethat dendrochemistry may be used as a proxy environmental monitoringtool.
- Subjects
ALUMINUM; FORESTS &; forestry; SOILS
- Publication
Water, Air & Soil Pollution, 1997, Vol 96, Issue 1-4, p321
- ISSN
0049-6979
- Publication type
Article