Dominant height growth modeling of Aleppo pine (Pinus halepensis Mill.) in Beni Imloul forest, northern Algeria
To predict the quality site-index for stands of the Aleppo pine forest of Beni Imloul (Algeria), six algebraic and generalized algebraic difference equations (ADA/GADA) derived from the three base functions of Hossfeld, Bertalanffy-Richards and Lundqvist-Korf were adjusted and compared using cross-...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Research Centre for Forestry and Wood
2024-01-01
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| Series: | Annals of Silvicultural Research |
| Subjects: | |
| Online Access: | https://journals-crea.4science.it/index.php/asr/article/view/2471 |
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| Summary: | To predict the quality site-index for stands of the Aleppo pine forest of Beni Imloul (Algeria), six algebraic and generalized algebraic difference equations (ADA/GADA) derived from the three base functions of Hossfeld, Bertalanffy-Richards and Lundqvist-Korf were adjusted and compared using cross-sections collected from 51 cut trees based on the stem-analysis method. The Lundqvist-Korf model with the GADA formulation produced a high level of performance and was selected and applied for the site quality identification of 167 temporary sample plots. This parameter, ranging between 9.13 and 17.77 m with an average of 13.99 m, allowed identifying four quality classes with a 2 m step between each class. The efficiency of the selected model, as productivity estimation-key, was verified by confronting the observed and estimated volumes. This key was justified for 77% of the sampled plots, which maintained the same productivity ranking or slightly shift towards one close class, both in terms of volume and dominant height. Not justified for extreme densities, the developed growth model can cautiously be used as a forest management tool in stands with optimal densities.
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| ISSN: | 2284-354X |