The Stand and Tree Integrated Model (STIM) is an empirical
model that integrates a stand-level sub-model with an individual-tree,
distance-independent sub-model. This integration allows the two
sub-models to interact and reconcile with one another. it was
designed to produce potential growth and yield tabels for even-aged
stands of coastal western hemlock and trembling aspen. The hemlock
model has been calibrated for both natural and thinned stands based
on data from coastal British Columbia, Washington and Oregon.
The aspen model has been calibrated for both natural and thinned stands
based on data from across Canada.