Invasive Species Compendium

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Abstract

PINEA2: an integrated model for the management of the regular stands of Pinus pinea L. in the Northern Plateau (Meseta).

Abstract

An account is given of the structure, components and practical application of the model PINEA2, which simulates individual tree growth and predicts wood, cones (for pine nuts) and biomass production from regular stands of Pinus pinea under different management regimes (as defined by thinning programmes and rotation length). The model is composed of 4 parts: (1) a model representing site quality, (2) a model representing stand characteristics (including a general equation for the diameter-height relationship, a submodel for crown dimensions, a stem profile equation for classifying wood products, a discriminant function for infection by Phellinus pini, a submodel for annual (healthy) cone production, and equations for different biomass fractions); (3) a transition and growth model (functions for diameter increment over 5 years, dominant height growth and stand density); and (4) an auxiliary model for obtaining tree and stand-level variables. The model is applied to a stand located in the Northern Plateau of Spain in order to compare 3 silvicultural regimes oriented to wood production, pine nut production or mixed production.