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Pinus halepensis in Cataluña and Aragón

Status: Stable | Version: v1.0.0 (2026-08-28)

General description

  • Description: Individual-tree growth model for Pinus halepensis in Catalonia and Aragón (Spain)
  • Target Species: Pinus halepensis (code: 24)
  • Application Region: Middle Ebro Valley (Aragón) and Catalonia (Huesca, Zaragoza, Girona, Barcelona, Lleida, and Tarragona; Spain)

Technical characteristics

  • Model Level: Individual tree
  • Allows Projection: Yes
  • Projection Time Step: 10 years
  • Notes: Individual tree model for Pinus halepensis in Catalonia and Aragón.

To view the step-by-step sequence of initialization, projection, and harvest, see the individual-tree model calculation flow diagram.

Required variables

To run this model in SIMANFOR, the initial inventory must include the following minimum data:

Plot level (Plots sheet)

  • Inventory and plot IDs
  • age
  • dominant height
  • slope (for ingrowth)

Tree level (Trees sheet)

  • Inventory, plot and tree IDs
  • species
  • expansion factor
  • dbh

Sample inventories

You can download the following sample inventories in Excel format to test this model:

Modules and equations

Breakdown of simulated biological processes and their methodological references:

  • Site index / Stand productivity: Cabanillas (2010), Rojo-Alboreca et al. (2017)
  • Growth: Trasobares et al. (2004)
  • Survival and/or mortality: Trasobares et al. (2004)
  • Ingrowth (trees of inventoriable size): Trasobares et al. (2004)
  • Stand Density Index (SDI) reference value: Aguirre et al. (2017)
  • Height-diameter relationship / height estimation: Cabanillas (2010)
  • Tree volume and taper: Rodríguez (2009), Föra Forest Technologies & Diputación General de Aragón (2017), MITECO (2025)
  • Biomass: Ruiz-Peinado et al. (2011)
  • Carbon content: Montero et al. (2005)
  • Diversity indexes: Omoro et al. (2010), Simpson (1949), Ulanowicz (2001), Bray & Curtis (1957)
  • Structural and size indexes: Varga et al. (2005), Moreno-Fernández & others (2025), Barbeito (2009)

References and documentation

  • How to Cite this Model:

SIMANFOR, 2026. Individual-tree growth model for Pinus halepensis in Catalonia and Aragón (Spain) (v1.0.0). https://www.simanfor.es

  • SIMANFOR Citation:

Bravo, F., Ordóñez, C., Vázquez-Veloso, A., Michalakopoulos, S., 2025. SIMANFOR cloud Decision Support System: Structure, content, and applications. Ecological Modelling 499, 110912. https://doi.org/10.1016/j.ecolmodel.2024.110912