Assisi Forest 2025 Updates

Below is a list of the more important Assisi Forest 2025 software updates.

Model Tree Groupings Moved to Calibration Fields

2025.1.2

Assisi can process growth modeling with trees in separate plots, combined into one plot or as stand table data. In previous versions, the method was set in the growth model settings. With this version, the method is stored in the Calibration TreeGroupCompile, TreeGroupGrowth and TreeGroupSimulate fields.

Thinning Triggers

2025.1.2

When to process a thinning is more often triggered by conditions on the ground rather than at a scheduled interval. Assisi can do both. And with this version you can define complex thinning triggers using C# scripting.

This version exposes a Trigger class that can be coded in C# to be as complex or as simple or plan simulations, Assisi processes your code to determine if thinning actions need to take place.

For example, here is a thinning trigger that schedules triggers based on stocking, age and habitat. This type of thinning is found within the Lake States region of the US. A prescription for White Pine is suggested in the chart below. Note that the prescription involves triggering on "Habitat" types, "Featured" species, definitions of different types of thinning: "Final Cut Shelterwood, 1st Cut Shelterwood" as well as age and TPA.

White Pine Prescription

Here is the Assisi trigger for White Pine as coded in C# scripting. The Initialize() method is used to define variables. The Trigger() method carries out the thinning log. Triggers can be a complex or simple as needed.