| | NCIi is calculated as follows (simplifying the notation):
NCIi = Σ η λk((DBHk/q)α/distanceβ)
where:
- we're summing over k = 0 to N neighbors greater than the minimum
neighbor DBH
- η is the storm damage parameter of the target,
depending on the damage status. It’s 1 if the neighbor is undamaged.
- α is the neighbor DBH effect parameter
- β is the neighbor distance effect parameter
- DBH is of the target tree, in cm
- q is the DBH divisor parameter
- DBHk is the DBH of the kth neighbor, in meters
- γ is the size sensitivity to NCI parameter
- λk is the NCI lambda parameter for the species
of the kth neighbor
- distance is distance from target to neighbor, in meters
Note that eta is per target species, not per neighbor (like lambda). More...
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