Histometrische Untersuchungen am Holz einer rauchgeschädigten Fichte

摘要

AbstractHistometrical investigations on the xylem of spruce after SO2pollution. The influence of SO2pollution on xylem differention in spruce was investigated. Besides such quantitative changes as reduced annual growth, qualitative changes also occur. With pollution, the percentage of latewood increases. Tracheids are shorter, possess more pits and are more frequent per unit area.