Official website of the New Zealand Farm Forestry Association


Forecaster calculator

 The Forecaster Calculator provides similar functionality to the Radiata Pine Calculator and the Douglas-fir Calculator. Growth and yield are predicted using the Forecaster desktop code-base, so outputs are consistent with the Forecaster desktop application.

The Forecaster Calculator is a simple forest simulation tool for radiata pine and douglas fir in New Zealand. It simulates the tree growth and the log products produced at a single clearfell age on a per hectare basis.

Its target audience is primarily the small woodlot owner wishing to calculate a rough estimate of the volume and log product mix on a particular site at a particular age.

For Douglas fir, currently you have to

  1. manually enter the 500 Index for the site in question
  2. Select PSEM (as in Pseudotsuga menziesii ) in the first ‘Plant’ event – there is a choice between PRAD and PSEM.

The Calculator will then know you are growing D-fir and the site productivity, and work accordingly. 


See the About page for more detail...

Get Started »


Disclaimer: This online Forecaster Calculator has been developed by Scion with funding support from the Forest Growers Levy Trust. It has been developed primarily to assist small growers to consider forest growing regimes and the impact of site and forest management on log yields. Neither Scion, Integral Limited, Forest Growers Levy Trust nor Forest Growers Research Limited or any other persons acting on their behalf accept any responsibility or liability for losses, claims, damages or costs arising from the use of the Forecaster Calculator. 

(top)

Farm Forestry - Headlines