Record Display for the EPA National Library CatalogRECORD NUMBER: 10 OF 15
|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.|
|Report Number||EPA-R817542 ;EPA-R-817633-01-0; EPA/600/J-93/501;|
|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|
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.