Pinus halepensis in Aragón

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

General description

Description: Individual-tree growth model for Pinus halepensis in Aragón (Spain)
Target Species: Pinus halepensis (code: 24)
Application Region: Aragón (Zaragoza, Huesca and Teruel; Spain)

Technical characteristics

Model Level: Individual tree
Allows Projection: Yes
Projection Time Step: 10 years
Notes: Individual tree model for Pinus halepensis developed for Aragón by Föra Forest Technologies and DGA.

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: Föra Forest Technologies & Diputación General de Aragón (2017)
Survival and/or mortality: Föra Forest Technologies & Diputación General de Aragón (2017)
Ingrowth (trees of inventoriable size): Trasobares et al. (2004)
Stand Density Index (SDI) reference value: Aguirre et al. (2017)
Height-diameter relationship / height estimation: Föra Forest Technologies & Diputación General de Aragón (2017)
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 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

Technical Documentation: SIMANFOR Models Repository (GitHub)
Model Bibliography:
Aguirre, A., Condés, S., del Río, M. (2017). Variación de las líneas de máxima densidad de las principales especies de pino a lo largo del gradiente estacional de la Península Ibérica. https://7cfe.congresoforestal.es/sites/default/files/comunicaciones/38.pdf
Barbeito, I. (2009). Natural regeneration dynamics of Pinus sylvestris L. in Central Spain.
Bray, J. R., Curtis, J. T. (1957). An Ordination of the Upland Forest Communities of Southern Wisconsin. Ecological Monographs.
Cabanillas, A. (2010). Bases para la gestión de masas naturales de Pinus halepensis Mill. en el Valle del Ebro. Universidad Politécnica de Madrid, http://oa.upm.es/4960/
Föra Forest Technologies, Diputación General de Aragón (2017). PHRAGON_2017_v1.cs: A model of Pinus halepensis useful for the old SiManFor version.
MITECO (2025). CUARTO INVENTARIO FORESTAL NACIONAL. Descripción de los códigos de la base de datos Sig. https://www.miteco.gob.es/content/dam/miteco/es/biodiversidad/temas/inventarios-nacionales/documentador_sig_tcm30-536622.pdf
Montero, G, Ruiz-Peinado, R, Muñoz (2005). Producción de biomasa y fijación de CO2 por los bosques españoles.. Monografías INIA: Serie Forestal no, 13. https://gregoriomontero.files.wordpress.com/2016/09/2005-01-monografc3ada-forestal-13-m-produccic3b3n-de-biomasa-y-fijacic3b3n-de-co2-por-los-bosques-espac3b1oles.pdf
Moreno-Fernández, D., others (2025). Structural diversity indices in managed forests.
Omoro, L. M. A., Starr, M., Pellikka, P. K. E. (2010). Tree biomass and soil carbon stocks in Taita Hills, Kenya. African Journal of Ecology.
Rodríguez, F. (2009). Cuantificación de productos forestales en la planificación forestal: Análisis de casos con cubiFOR. https://secforestales.org/publicaciones/index.php/congresos_forestales/article/view/17189/17024
Rojo-Alboreca, Alberto, Cabanillas-Saldaña, Ana María, Barrio-Anta, Marcos, Notivol-Paíno, Eduardo, Gorgoso-Varela, José Javier (2017). Site index curves for natural Aleppo pine forests in the central Ebro valley (Spain). Madera y Bosques, 23(1), 143-159. 10.21829/myb.2017.231495
Ruiz-Peinado, Ricardo, Del Rio, Miren, Montero, Gregorio (2011). New models for estimating the carbon sink capacity of Spanish softwood species. Forest Systems, 20(1), 176-188. 10.5424/fs/2011201-11643
Simpson, E. H. (1949). Measurement of Diversity. Nature, 163, 688.
Trasobares, Antoni, Pukkala, Timo, Miina, Jari (2004). Growth and yield model for uneven-aged mixtures of Pinus sylvestris L. and Pinus nigra Arn. in Catalonia, north-east Spain. Annals of Forest Science, 61(1), 9-24. 10.1051/forest:2003080
Ulanowicz, R. E. (2001). Information theory in ecology. Computers & Chemistry.
Varga, P., Chen, H. Y., Klinka, K. (2005). Tree-size diversity in progression of stand development in Douglas-fir forests. Forest Ecology and Management.