Theory 116/Forestry & Fire Ecology
Timber Is a Rotation Ratio
The claim
Timber yield is set by the ratio of site index to rotation length rather than by site index.
01The mechanism
Yield depends on growth accumulated over the rotation; a high site index harvested too early produces less than a moderate site grown longer.
02Predictions
- P1Yield should collapse onto the ratio.
- P2Site index alone should mispredict.
03Refutation
Yield tracking site index would remove the rotation term.