Official website of the New Zealand Farm Forestry Association

NZFFA logo: green conifer tree on white background

Inventory and Decision Support Software


This software has been developed by Future Forests Research for sensitivity analysis of growth modelling and testing management regimes, to derive future production and income in P. radiata; also available for other species listed.

Pinus radiata version 4 calculator >>
(NZFFA members only)

Eucalyptus fastigata calculator >>
(NZFFA members only)

Kauri calculator >>
(NZFFA members only)

Cypress calculator >>
(NZFFA members only)

Treegrower articles and NZFFA leaflets

GIS and indigenous forest management

Version 2 Calculators: Upgrading the business of farm forestry

MARVL pre-harvest inventory system

Tree planters’ record system

Stand density index – a useful tool for New Zealand redwood plantings

Measuring radiata pine and forecasting yields

Getting the most out of MARVL

Try out the experimental Species Selection System (high country)

Practical hints for measuring trees

Getting back to basals

Inventory - other sources of information


Author/source Date 

Summary of contents and
key words 

Available from 


Link to

How Much Wood Has Your Woodlot Got? 

J Piers Maclaren 

Practical guide to woodlot inventory, aimed at farm foresters. Somewhat dated (eg excludes use of electronic technology such as GPS and Vertex). 

Scion (formerly NZ Forest Research Institute) 



J.P Maclaren (2000)

Inventory Practice for Managed Forests 

CJ Goulding and ME Lawrence 

Handbook aimed at professional foresters. Could still be of value to farm foresters keen on accurate forest inventory. Somewhat dated (eg excludes use of electronic technology such as GPS and Vertex). 



Goulding and Lawrence (1992)


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