Northern Research Station
11 Campus Blvd., Suite 200
Newtown Square, PA 19073
(610) 557-4132 TTY/TDD
Contact: George Racin
Forests are an essential component of the world's environment. Issues surrounding the use of forests include old-growth conservation, clearcutting, and the impact of forests on global warming. Computer simulation can help us understand complicated forest systems.
The Stand-Damage Model grows individual trees on small plots. This model type, known among ecologists as "gap models", has been used throughout the world, from Eastern Europe to Australia and Africa. The model grows individual trees on forest plots. The user can change much about the forest and its environment: the location of the forest, its weather and soil, and the trees at the beginning of the simulation. One can try different logging practices and introduce global warming temperature changes.
The Stand-Damage Model simulates tree diameter and height growth, foliage production, and mortality. Each year the model calculates diameter growth of trees as a function of relative stocking (a measure of tree crowding), shading, heat, and defoliation. Users describe a forest stand by entering tree counts by species and diameter class. Parameters for over sixty tree species are provided. The user can enter defoliation scenarios and silvicultural treatments.
Stand-Damage Model with Java (Version 3 Self-extracting zip file - 615 kb)
Version 2 software and documentation
DOS Stand-Damage Model (Version 2 - Self-extracting zip file - 1.1 mb)
How To install and use Stand Damage Model Version 2 (pdf - includes installation package- 455 kb)
Version 1 documentation
Last Modified: 03/04/2008