Record Display for the EPA National Library Catalog


Main Title Physiology-Based Gap Model of Forest Dynamics.
Author Friend, A. D. ; Schugart, H. H. ; Running, S. W. ;
CORP Author Virginia Univ., Charlottesville. Dept. of Environmental Sciences. ;Montana Univ., Missoula. School of Forestry.;Corvallis Environmental Research Lab., OR.;National Science Foundation, Washington, DC.
Publisher c1993
Year Published 1993
Report Number EPA-R817542 ;EPA-R-817633-01-0; EPA/600/J-93/501;
Stock Number PB94-136132
Additional Subjects Forest trees ; Plant physiology ; Plant ecology ; Plant growth ; Mathematical models ; Oak trees ; Carbon fixation ; Dynamics ; Tennessee ; Montana ; Carbon dioxide ; Humidity ; HYBRID model ; Quercus alba
Library Call Number Additional Info Location Last
NTIS  PB94-136132 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
A computer model of forest growth and ecosystem processes is presented. The model, HYBRID, is derived from a forest gap model, an ecosystem process model, and a photosynthesis model. In HYBRID individual trees fix and respire carbon, and lose water daily; carbon partitioning occurs at the end of each year. HYBRID obviates many of the limitations of both gap models and ecosystem process models. The growth equations of gap models are replaced with functionally realistic equations and processes for carbon fixation and partitioning, resulting in a dynamic model in which competition and physiology play important roles.