Category Archives: forest fire

5.20 forest fire model with age-related flammability

This model is a forest fire model where the flammability of sites changes with the time elapsed since the site last burned. The focus of this model is on the relationship between the ‘flammability function’ and the resulting distribution of fire sizes, and on how ‘memory’ in the landscapes contributes to the overall patterns that result.

This model draws on ideas in

Kitzberger T, Araoz E, Gowda JN, Mermoz M and Morales J 2012 Decreases in fire spread probability with forest age promotes alternative community states, reduced resilience to climate variability and large fire regime shifts. Ecosystems, 15, 97-112.
Peterson GD 2002 Contagious disturbance, ecological memory, and the emergence of landscape pattern. Ecosystems, 5, 329-338.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo including the gradient extension to run this file.

5.19 the ‘sand-pile’ forest fire model

This model is an implementation of a simple forest fire model with a primary focus on the size distribution of the fires that are produced. It is based on the model described in

Bak P and Chen K 1990 A forest-fire model and some thoughts on turbulence. Physics Letters A, 147, 297–300.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.