Preliminary Research Into Ion Concentration of Bark and Wood in Relation to Electrical Resistance and Tree Condition in Silver Fir : 7. IUFRO-Tannensymposium "Oekologie und Waldbau der Weisstanne"

Mainz

1995

S. 327-330

10 Lit. Ang.

Bandaufführung

77880

Determinations of some ion (K, Mg, Mn, Ca) concentrations were made of the last formed wood, vascular cambial zone with conductive phloem, the youngest and the oldest nonconductive phloem, by atomic absorption spectroscopy in three apparently unaffected and three heavily affected silver fir (Abies alba Mill.) trees. Results were correlated with electrical resistance (ER) readings in analysed tissues. The tissues of unaffected trees were characterized by higher K content and correspondingly lower ER. The concentrations of Mg, Mn and Ca did not differ significantly between affected and unaffected trees and had no detectable effect on ER readings.