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Annals of Forest Science

, Volume 66, Issue 1, pp 108–108 | Cite as

Potential productivity of forested areas based on a biophysical model. A case study of a mountainous region in northern Spain

  • Raquel Benavides
  • Sonia Roig
  • Koldo Osoro
Original Article

Abstract

  • • Today’s forest managers face a number of important challenges involving an increasing need for precise estimates of forest structure and biomass, potential productivity or forest growth. The objective is to develop a model for potential productivity in a mountainous region of Spain. The model combines climatic, topographic and lithological data using a variant of a traditional biophysical model: the Paterson index.

  • • In a first approach, the climatic productivity is assessed by modelling the required parameters using different geostatistical techniques and software supported by GIS. A second approach includes the correction of the former productivity classes considering the different lithological facies. The potential forest productivity model involves the integration of both models.

  • • Finally, data from the National Forest Inventory (NFI) are used to compare the real and potential yield data within different regions of the studied area.

  • • The results of these analyses demonstrate the usefulness of the model, particularly in mountainous regions, where no significant differences are found between the data from the NFI and the model, but they also show the discrepancies between the estimates and real data when the latter are considered for different tree species, diameter classes or management.

Keywords

geostatistics GIS land use planning modelling yields 

Productivité potentielle des forêts à partir d’un modèle biophysique. Étude du cas d’une région montagneuse dans le nord de l’Espagne

Résumé

  • • Les gestionnaires forestiers doivent actuellement faire face à de nombreux défis qui impliquent un besoin croissant d’estimateurs précis de la structure et de la biomasse, de la productivité potentielle et de la croissance des forêts.

  • • L’objectif de ce travail est la modélisation de la productivité potentielle dans une région montagneuse de l’Espagne. Le modèle combine des données climatiques, topographiques et lithologiques et se base sur une variante d’un modèle biophysique classique : l’indice de Paterson.

  • • Dans une première approche, la productivité climatique est estimée en modélisant les paramètres requis grâce à différentes techniques géostatistiques et de logiciels relevant des systèmes d’information géographique (SIG). Une deuxième approche consiste corriger les anciennes classes de productivité en prenant en compte les facies lithologiques. Le modèle de productivité forestière potentielle a été obtenu en combinant ces deux modèles. Finalement, les données de l’Inventaire Forestier National (IFN) sont utilisées pour comparer les rendements réels et potentiels dans les différentes régions de la zone étudiée.

  • • Les résultats de ces analyses ont montré l’utilité du modèle, en particulier dans les régions montagneuses, où aucune différence significative n’a été décelée entre les données IFN et le modèle. Ces résultats ont cependant mis aussi en évidence des divergences entre la productivité potentielle et données réelles lorsque l’on compare différentes espèces, classes de diamètre ou modes de gestion.

Mots-clés

techniques géostatistiques SIG gestion de l’usage des sols modélisation rendements 

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Copyright information

© Springer S+B Media B.V. 2009

Authors and Affiliations

  1. 1.SERIDA, Área de Sistemas de Producción AnimalVillaviciosaSpain
  2. 2.Centro de Investigación Forestal (CIFOR)-INIAMadridSpain

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