Aluminum,Fe, Ca,Mg, K,Mn, Cu,Zn and P in above- and belowground biomass. I.Abies amabilis andTsuga mertensiana |
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| Authors: | K A Vogt R Dahlgren F Ugolini D Zabowski E E Moore R Zasoski |
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| Institution: | (1) College of Forest Resources AR-10, University of Washington, 98195 Seattle, WA, USA;(2) Present address: School of Forestry and Environmental Studies, Yale University, 06511 New Haven, CT, USA;(3) Present address: Land, Air, Water Department, University of California, 95616 Davis, CA, USA |
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| Abstract: | In a mature mixed subalpine stand ofTsuga mertensiana andAbies amabilis, significantly higher Al levels were found in foliage, branch and root tissues ofT. mertensiana.Tsuga mertensiana had significant increases in Al, Ca and Mn levels with increasing foliage age. In current foliage,T. mertensiana had lower levels of Ca, similar levels of Mg and P, and higher levels of Mn thanA. amabilis. Both tree species had Cu and Fe present at higher levels in branch than foliage tissues. Fine roots had the highest concentrations of Al, Fe and Cu but the lowest Ca and Mn concentrations of all tissues analyzed. In the roots of both species, phloem tissues always had significantly higher Al levels than xylem. Fine roots (< 1 and 1–2 mm) ofT. mertensiana had higher Al levels than were found inA. amabilis. Roots greater than 2 mm in diameter exhibited no significant differences in Al levels in phloem or xylem tissue betweenA. amabilis andT. mertensiana. The two species show a clear difference in their ability to accumulate specific elements from the soil. |
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| Keywords: | aluminum trace elements Abies amabilis Tsuga mertensiana above- and below-ground cycling |
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