Dynamique du prix des bois de Pinus selon différents assortiments d'essences : comparaison entre processus stochastiques

Auteurs

São Paulo State University (Unesp), School of Agriculture, Botucatu
São Paulo State University (Unesp), School of Agriculture, Botucatu
São Paulo State University (Unesp), School of Agriculture, Botucatu
São Paulo State University (Unesp), Campus of Itapeva

DOI :

https://doi.org/10.19182/bft2022.351.a36392

Résumé

La compréhension de la dynamique des prix du marché pour le bois de Pinus est une condition préalable aux décisions stratégiques concernant les plans d'investissement forestier puisque, du point de vue du marché, le risque exogène d'un projet dépend des assortiments d'essences forestières. Il faut donc connaître le processus stochastique qui représente la meilleure façon d'évaluer l'actif sous-jacent. A l'aide de tests économétriques, la présente étude vise à comparer le mouvement brownien fractionnaire et le mouvement brownien géométrique pour déterminer le modèle stochastique qui représente le mieux le comportement du prix du bois de Pinus provenant de forêts plantées dans l'État de Santa Catarina, au Brésil, afin d'évaluer l'actif sous-jacent et les options réelles intrinsèques aux projets d'investissement forestier. Les séries chronologiques de prix, pour la période allant de juin 2017 à juillet 2019, concernent trois assortiments de bois de Pinus utilisés pour de multiples produits. Les tests économétriques recommandés pour analyser les séries chronologiques portaient sur la normalité des données, la tendance, l'autocorrélation, la stationnarité et l'estimation différentielle fractionnelle. Les séries chronologiques ont ensuite été modélisées au moyen de processus stochastiques conformément aux tests économétriques. Les séries chronologiques ont indiqué un comportement normal, la présence d'une tendance positive et la non-stationnarité des données. En outre, une mémoire longue a été trouvée dans toutes les séries. Le mouvement brownien fractionnaire s'est avéré être le processus stochastique le plus approprié pour modéliser les prix de trois assortiments de bois forestiers, étant donné les caractéristiques non stationnaires et la mémoire longue des séries chronologiques pour les prix du bois de Pinus.

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Reçu

2021-06-13

Publié

2022-02-28

Comment citer

MUNIS, R. A., MARTINS, J. C., CAMARGO, D. A., & SIMÕES, D. (2022). Dynamique du prix des bois de Pinus selon différents assortiments d’essences : comparaison entre processus stochastiques . BOIS & FORETS DES TROPIQUES, 351, 45–52. https://doi.org/10.19182/bft2022.351.a36392