1. General Model Information

Name: Phygrow Plant Growth Model

Acronym: PHYGROW

Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: not specified
Main application:
Keywords: plant growth, forage production, ecosystem


The Department of Rangeland Ecology and Management
Texas A&M Univeristy
College Station, Texas 77843
Phone: (409) 845-0302
Fax :



Phygrow is a hydrologic based plant growth simulation model. Phygrow is intended to produce an available forage production for a site. Phygrow uses soil characteristics, plant community characteristics, and weather data for a particular location to predict the forage production. The PHYGROW system is intended to be a general ecosystem model similar in function to the work done by The Dynamic, Spatial, Ecological Modeling Team in their Sage Grouse Model developed for the US Army's Yakima Training Center. Many of the growth parameters are from A Wepp Phygrow will provide hooks that allow for the sage grouse, and the human activities type models, with a more extensive and more flexible vegetation and physical process submodel. Internally Phygrow will be primaraly concerned with ruminant grazing practices with respect to long term viability of the vegetation.

II. Technical Information

II.1 Executables:

Operating System(s): Release 1.0, and 1.2 have been restricted to the groups associated withthe Department of Rangeland Ecology and Management at Texas A&M University.The Version 2.0 functional group and plant community editors have beengiven a cursory review by other experts within the Rangeland Ecology andManagement Department at Texas A&M. The BLM has also viewed the model.Internal testing is scheduled to begin aroune 2/95.

II.2 Source-code:

Programming Language(s):

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: 10. August 1997
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:47 CEST 2002

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