Ontario FRI data

This directory contains a small example of the use of the
SDB model with Ontario Forest Resource Inventory.  See the
script 'fri.tcl' for detail.

Directory contents:

README		This file
fri.tcl		The script containing the model

fri.inv		The inventory data

normal.yld	Yield curves
site.xref	A cross reference table to indicate how secondary
		species perform in different working groups.

type.rul	A lookup table to convert numeric working group type 
		codes to character labels.

succession.tcl	A simple succession rule.


To try out this model start the SDB progran and enter 'source fri.tcl'.
This will load all of the datasets and define the relationships.


Potential improvements:
- Adding site index equations would provide for dynamic heights.
  This would be a simple addition.

- Each species component could be given its own 'origin' field.
  This would be a flexible way of describing multi-storied stands.

- The succession rules could be improved (although data is limiting).

- A simple wood supply model could be implemented.  A 'minimize-volume-loss'
  harvest rule could be implemented with a few future-volume rules
  (see the timmins directory for an example of this), some sorting
  rules, and a TCL loop to mark stands as harvested.