Mobilizing expert Knowledge of Tree Growth with the PLANTGRO and INFER Systems

Hackett, Clive and Vanclay, Jerome K. (1998-01-01) Mobilizing expert Knowledge of Tree Growth with the PLANTGRO and INFER Systems. Ecological Modelling, 106 2-3: 233-246.

Document type: Journal Article
Collection: School of Integrative Systems
 
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Author(s) Hackett, Clive
Vanclay, Jerome K.
Title Mobilizing expert Knowledge of Tree Growth with the PLANTGRO and INFER Systems
Journal name Ecological Modelling
Publication date 1998-01-01
Volume number 106
Issue number 2-3
Start page 233
End page 246
Subject 300606 Agroforestry
280201 Expert Systems
300205 Agronomy
300104 Land Capability and Soil Degradation
Abstract PLANTGRO can provide estimates of plant and tree growth under a wide range of conditions by evaluating responses to some 20 environmental variables ranging from day length to soil pH and determining the limiting factor. Although intended only to indicate the suitability of a given site-species combination, empirical trials suggest that the suitability index provides a reasonable indication of growth potential, offering correlations with height growth as high as 80%. PLANTGRO can be calibrated for new situations by providing appropriate soil, climate and species files. These can be compiled from plot-based data, casual observations, or expert knowledge. INFER is an expert system which complements PLANTGRO by providing an objective framework to elucidate plant growth details from casual observations. Together, INFER and PLANTGRO offer an effective way to provide initial growth estimates for species-site combinations not covered by plot data or other models. PLANTGRO is available from the first author, and INFER and many PLANTGRO files for forest trees may be accessed on the internet at http://www.cgiar.org/cifor/research/tropis/plantgro.html
Keyword(s) forest growth modelling
expert system
plantation
species-site matching
model evaluation
Additional Notes Originally published as C. Hackett and J.K. Vanclay, 1998. Mobilizing expert knowledge of tree growth with the PLANTGRO and INFER systems. Ecological Modelling 106:233-246. doi: 10.1016/S0304-3800(97)00185-3 Copyright 1998 Elsevier. All rights reserved. Single copies only may be downloaded and printed for a user's personal research and study.
 
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