Hybrid growth model to predict height and volume growth in young Eucalyptus globulus plantations

Abstract A process-base site productivity model (P RO M OD ) was hybridized with an empirical growth projection model (N IT G RO ) developed for Eucalyptus nitens plantations. The subsequent hybrid growth model was used to predict the time course of height and volume growth in 16 plantations of E. globulus located in northern Tasmania, Australia. Growth in these plantations was constrained by temperature, water stress, waterlogging and poor site nutrition. With the help of a few simple, easily obtained site descriptors, P RO M OD was used to predict the site index for these sites. This site index was used to run N IT G RO . Comparison of predictions with observed height and volume growth indicated that height growth was predicted accurately, but that estimates of volume growth were biased. The bias in the estimates of volume growth may be the result of the application of a growth model developed for E. nitens plantations to E. globulus plantations.

[1]  B. Turner,et al.  Growth and yield modelling of Australian eucalypt forests II. Future trends , 1990 .

[2]  M. Ball,et al.  Cold-Induced Photoinhibition and Design of Shelters for Establishment of Eucalypts in Pasture , 1994 .

[3]  J. J. Landsberg,et al.  Biomass production by fast-growing trees. , 1989 .

[4]  S. Candy,et al.  Growth and yield models for Eucalyptus nitens plantations in Tasmania and New Zealand. , 1997 .

[5]  Robert A. Monserud,et al.  Height Growth and Site Index Curves for Inland Douglas-fir Based on Stem Analysis Data and Forest Habitat Type , 1984 .

[6]  W. Post,et al.  Influence of climate, soil moisture, and succession on forest carbon and nitrogen cycles , 1986 .

[7]  M. Austin,et al.  Current problems of environmental gradients and species response curves in relation to continuum theory , 1994 .

[8]  Donald L. DeAngelis,et al.  Multiple nutrient limitations in ecological models , 1989 .

[9]  J. Walker,et al.  An integrated rate methodology (IRM) for multi-factor growth rate modelling , 1994 .

[10]  Steven W. Running,et al.  Testing a mechanistic carbon balance model against observed tree growth , 1991 .

[11]  M. Cannell,et al.  Attributes of trees as crop plants , 1985 .

[12]  C. Goulding.  Development of growth models for Pinus radiata in New Zealand — experience with management and process models , 1994 .

[13]  C. Beadle,et al.  Comparative early growth of Eucalyptus species of the subgenera Monocalyptus and Symphyomyrtus in intensively-managed plantations in southern Tasmania , 1993 .

[14]  R. Carter,et al.  Relationships between growing-season soil water-deficit, mineralizable soil nitrogen and site index of coastal Douglas fir. , 1990 .

[15]  Annikki Mäkelä,et al.  A Carbon Balance Model of Growth and Self-Pruning in Trees Based on Structural Relationships , 1997, Forest Science.

[16]  R. C. Woollons,et al.  Augmenting empirical stand projection equations with edaphic and climatic variables , 1997 .

[17]  E. D. Ford,et al.  Modeling the Dependence of Forest Growth on Environmental Influences , 1989 .

[18]  Michael G. Ryan,et al.  Declining forest productivity in aging forest stands: a modeling analysis of alternative hypotheses. , 1996, Tree physiology.

[19]  M. E. Rayner.  Evaluation of six site classifications for modelling timber yield of regrowth karri (Eucalyptus diversicolor F. Muell.) , 1992 .

[20]  Roderick C. Dewar,et al.  Sustainable stemwood yield in relation to the nitrogen balance of forest plantations: a model analysis. , 1996, Tree physiology.

[21]  P Nygren,et al.  Canopy development, CO(2) exchange and carbon balance of a modeled agroforestry tree. , 1996, Tree physiology.

[22]  J. B. Reid,et al.  Eucalypt plantations, improving fibre yield and quality , 1995 .

[23]  Werner A. Kurz,et al.  Modelling the interactions between moisture and nutrients in the control of forest growth , 1990 .

[24]  Michael Battaglia,et al.  Modelling Site Productivity of Eucalyptus globulus in Response to Climatic and Site Factors , 1997 .

[25]  Ross E. McMurtrie,et al.  Modelling the yield of Pinus radiata on a site limited by water and nitrogen , 1990 .

[26]  A. R. Gibson,et al.  PREDICTING PINUS RADIATA SITE INDEX FROM ENVIRONMENTAL VARIABLES , 1984 .

[27]  J. Turner,et al.  Site classification of Pinus radiata plantations in the lithgow district, New South Wales, Australia , 1985 .

[28]  Roderick C. Dewar,et al.  Carbon Allocation in Trees: a Review of Concepts for Modelling , 1994 .

[29]  P. West,et al.  Test of a system to predict productivity of eucalypt plantations in Tasmania , 1996 .

[30]  P. Snowdon,et al.  Effects of irrigation and artificial drought on the growth and health of Pinus radiata near Canberra, A.C.T , 1991 .

[31]  M. Cannell,et al.  Dry matter partitioning in tree crops , 1985 .