<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Above- and belowground biomass and net primary production (<italic>P</italic>n) of a maturing Norway spruce (<italic>Picea abies</italic> (L.) Karst.) forest (80 years old) established on brown soil in central Estonia were 227, 50 and 19.3 Mg ha correspondingly. Stand structure is determined mostly by mean height and stand density, used widely in forestry, but both are difficult to measure with high precision in respect of canopy processes in individual trees. However, trunk form quotient (<italic>q</italic>2) and proportion of living crown in relation to tree height are useful parameters allowing describe stand structure tree by tree. Based on 7 model trees, leaf unit mass assimilation activity and total biomass respiration per unit mass were determined graphically as mean values for the whole tree growth during 80 years of age. There are still several possible approaches not used carefully enough to integrate experimental work at instrumented towers with actual forestry measurement. Dependence of physiological characteristics on individual tree parameters is the missing link between canopy processes and forest management.</abstract>

Above- and belowground biomass and net primary production (Pn) of a maturing Norway spruce (Picea abies (L.) Karst.) forest (80 years old) established on brown soil in central Estonia were 227, 50 and 19.3 Mg ha correspondingly. Stand structure is determined mostly by mean height and stand density, used widely in forestry, but both are difficult to measure with high precision in respect of canopy processes in individual trees. However, trunk form quotient (q2) and proportion of living crown in relation to tree height are useful parameters allowing describe stand structure tree by tree. Based on 7 model trees, leaf unit mass assimilation activity and total biomass respiration per unit mass were determined graphically as mean values for the whole tree growth during 80 years of age. There are still several possible approaches not used carefully enough to integrate experimental work at instrumented towers with actual forestry measurement. Dependence of physiological characteristics on individual tree parameters is the missing link between canopy processes and forest management.

Stand structure links up canopy processes and forest management

Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, Kreutzwaldi 5, 51014 Tartu, Estonia

Forestry Studies

{"article-title":"Stand structure links up canopy processes and forest management"}

Above- and belowground biomass and net primary production (Pn) of a maturing Norway spruce (Picea abies (L.) Karst.) forest (80 years old) established on brown...

Stand structure links up canopy processes and forest management

Publié en ligne: 24 mars 2011

Pages: 40 - 48

DOI: https://doi.org/10.2478/v10132-011-0076-8

Mots clés
net primary production, stand structure, carbon allocation, assimilation, respiration, Norway spruce

This content is open access.

Stand structure links up canopy processes and forest management

Publié en ligne: 24 mars 2011

Pages: 40 - 48

DOI: https://doi.org/10.2478/v10132-011-0076-8

Mots clésnet primary production, stand structure, carbon allocation, assimilation, respiration, Norway spruce

This content is open access.

Mots clés
net primary production, stand structure, carbon allocation, assimilation, respiration, Norway spruce