Ref ID: 10800
Ref Type: Journal
Authors: Almeida, A., Landsberg, J., and Sands, P. J.
Pub Date: 2004
Journal Name: Forest Ecology and Management
Volume: 193
Issue: 1-2
Start Page: 167
End Page: 178
ISBN/ISSN:
Keywords: parameterisation/3-PG/model/fast/Eucalyptus/Eucalyptus grandis/plantations/plantation
Abstract: The 3-PG model [J.J. Landsberg, R.H. Waring, A generalised model of forest
productivity using simplified concepts of radiation-use efficiency, carbon
balance and partitioning, For. Ecol. Manage. 95 (1997) 209] was
parameterised for *Eucalyptus* grandis hybrid plantations based on data
collected in an experimental catchment. Model performance was compared with
data collected monthly in 12 plots over 3.5 years from five genotypes in the
catchment and in growth plots measured annually in two other regions.
Application of the model using the parameter values determined in the study
allowed us to describe accurately the growth patterns of stands in terms of
mean annual increment, total stand volume, basal area, diameter at breast
height, leaf area index and available soil water. The observed differences
in production between genotypes (clones) could be attributed primarily to
differences in biomass partitioning and secondarily to differences in
stomatal conductance. There were di!
fferences between clones in parameters affecting the allometric
relationship between stem mass and diameter at breast height, biomass
allocation to roots, the ratio of foliage to stem allocation and maximum
stomatal conductance. The model can be used to simulate growth and yield in
areas for which it has not been calibrated, and parameters obtained in the
calibration process described are being applied to estimate growth in 181000
ha of E. grandis hybrid plantations in Brazil.
Notes:
Reprint: In File
Program: SPF Sustainable Management
Project: B4
Deliverable:
Confidentiality:
Availability:
Report: Annual Report 2003/4
Type:
Address: Peter.Sands@csiro.au