Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Modeling tree level processes /
Author Gay, Cheryl Aeschbach.
Other Authors
Author Title of a Work
Environmental Research Laboratory.
CORP Author Corvallis Environmental Research Lab., OR. ;NSI Technology Services Corp., Corvallis, OR.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory,
Year Published 1989
Report Number EPA/600/D-89/164; ERL-COR-5260
Stock Number PB90-116633
Additional Subjects Mathematical models ; Simulation ; Trees(Plants) ; Plant ecology ; Plant physiology ; Plant growth ; Air pollution effect(Plants) ; Acid rain ; Forest Response Program
Library Call Number Additional Info Location Last
NTIS  PB90-116633 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 29 pages : illustrations ; 28 cm
An overview of three main types of simulation approach (explanatory, abstraction, and estimation) is presented, along with a discussion of their capabilities limitations, and the steps required for their validation. A process model being developed through the Forest Response Program is used as an example. The lower hierarchical level of processes, such as photosynthesis and nutrient allocation, is emphasized in simulation of the activities of the foliar organ. A branch growth module with which the foliar module will be coupled in the system is also a process model, but is under development using the abstraction approach. A stand model has been developed empirically, using the estimation approach. The development of modular simulators of sub-processes, utilizing various of the three developmental approaches, then coupling them is a robust approach to meeting information needs. The resultant aggregate models provide tools with the capabilities of incorporating current scientific knowledge to provide predictions which possess the characteristics of realism, generality and precision.
"EPA/600/D-89/164." Includes bibliographical references. "Presented at the Proceedings of the 2nd US/USSR Symposium Air Pollution Effects on Vegetation, September, 1988, Raleigh, NC." Microfiche.