Software
A number of different software versions of the 3-PG model have been developed.
A simple to use Excel version of 3-PG for plot data developed by Dr. Peter Sands (retired, CSIRO Australia).
Click here to download the Excel version of the model.
A public version of the model was developed by CSIRO Australia and released in 2004. It uses Arc/INFO float files as inputs and allows to make spatial predictions. Please contact Dr. Nicholas Coops.
Current Versions of 3PG Code and its availability
| Model additions | Contact | Paper (DOI) | Modifications |
| 3PG-for EXCEL |
Dr Peter Sands pjsNumerics@netspace.net.au |
– | A simple to use Excel version of 3-PG for plot data developed by Dr. Peter Sands (retired, CSIRO Australia). |
|
Spatial version 3-PGS |
Nicholas Coops nicholas.coops@ubc.ca |
https://doi.org/10.1016/S0378-1127(97)00248-X | The model version can run both the standard 3PG as well as 3PGS which includes the use of remote sensing using GIS spatial layers to allow spatial predictions of 3PG outputs. |
|
iLand |
Tel: +43 1 47654-91328 |
Adding an Agent Based management Engine (ABE) that allows simulating, at a tree level over a large area, and spatial interactions like tree competition or disturbance spread through landscape. | |
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Stable isotope analysis
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Dr. Liang Wei |
https://doi.org/10.1111/pce.12133 |
The model add estimation of carbon composition and assess the coupling between carbon and water budget via gross primary production and canopy conductance The model also add a temperature modifier for canopy conductance to simulate seasonal patterns. |
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Dr. Angelo Nolè |
The model modified the soil respiration model to predict both total ecosystem respiration and net ecosystem production. This addition allows an estimation of the net ecosystem fluxes. |
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Soil organic matter decomposition
3-PNG |
Dr. Georgios Xenakis georgios.xenakis@forestry.gsi.gov.uk |
https://doi.org/10.1016/j.ecolmodel.2008.07.020 | The model integrate the soil organic matter and the nutrient dynamics that affect growth |
| Water balance |
Dr. Auro C. Almeida |
https://doi.org/10.1002/eco.1661 | An improved water balance model was added to predict the stand-level forest soil water balance, by diminishing the time step for rainfall, modelling canopy transpiration and soil evaporation as distinct process and dividing the sol profile in two distinct area (root and root-free zone). |
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Catchment scale
3PGH |
https://doi.org/10.1002/hyp.10992 |
Combine 3-PG model and a modeling framework (TOPMODEL) that provides estimation at a catchment scale using a daily time step for precipitation. This addition allows the model to estimate variation in flow patterns related to forest management. |
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Mixed species forest interactions and deciduous species
3-PGmix |
Dr. David Forester |
https://doi.org/10.1016/j.ecolmodel.2015.07.010 | This study adds a new light absorption sub-model so the 3-PG model is adapted for mixed-species forests and deciduous species |
| R3PG | Daniel M.Griffith Griffith.dan@gmail.com |
Code to run the 3-PG model natively in R including code for predicting stable isotope ratios for plant material | |
| r3PG |
volodymyr.trotsiuk@wsl.ch |
Forrester, D.I., Trotsiuk, V. and Mathys, A.S. 2020. 3-PG: ein physiologisches Waldwachstumsmodell. Schweizerische Zeitschrift für Forstwesen 171, 158-164. |
Provides a flexible and easy-to-use interface for the 3-PGpjs and 3-PGmix model written in Fortran |