SORTIE-ND
Software for spatially-explicit simulation of forest dynamics

NCI shading effects

Note: If these effects are used with NCI Mortality, the time period unit for parameters must match the value specified in the NCI Parameter Period (years) parameter.


Default shading effect

Parameters

NCI Shading Effect Coefficient (m)The coefficient in the shading effect equation.
NCI Shading Effect Exponent (n)The exponent in the shading effect equation.

How it works

Shading Effect is calculated as:

NCI shading effect equation

where:

  • m is the NCI Shading Effect Coefficient (m) parameter
  • n is the NCI Shading Effect Exponent (n) parameter
  • S is the amount of shade cast by neighbors, from 0 (no shade) to 1 (full shade). This value should come from the Sail light behavior.

How to apply it

The trees to which this behavior is applied must also have a light behavior applied - the Sail light behavior is the one designed to work with the NCI behavior. The use of any other light behavior is at your own risk.