Allometric relationships for surface area and dry mass of young Norway spruce aboveground organs
2007
Pokorny, R.,Akademie Ved, Brno (Czech Republic). Ustav Systemove Biologie a Ekologie | Tomaskova, I.,Akademie Ved, Brno (Czech Republic). Ustav Systemove Biologie a Ekologie
Tree-level allometric functions for a precise predicting of stem, branch and leaf mass and surface area of three needle-shoot age classes were estimated from measurements of crown and stem dimensions in 34 harvested Norway spruce trees. Trees were grown within a 16-years-old stand in the Beskids Mountains, Czech Republic. The results showed stem characteristics (stem diameter at breast height - dbh, stem volume - Vs and stem sapwood area - SA) to be highly correlated (r more than 0.98) with stem mass/area and total aboveground mass of tree. Crown traits - volume (Cv) and surface area (Ca) were the best predictors for individual branch and needle age-classes mass (r more than 0.92) or area (r more than 0.85), specifically for mass and surface areas of young branches and needles. Dbh most correctly predicted the branch and leaf mass/surface area of older (more than 2 years) shoots. The measured variables (dbh, SA, tree height, crown length, Ca and Cv) showed a high dependence on the tree position within the stand (r more than -0.81). Thus, these variables could be modified by silviculture.
显示更多 [+] 显示较少 [-]