Memorias de investigación
Artículos en revistas:
Characterization of the spatial structure of the canopy in Pinus sylvestris L. stands from hemispherical photographs
Año:2008
Áreas de investigación
  • Ecología,
  • Agricultura,
  • Producción vegetal
Datos
Descripción
The spatial pattern was characterized in five experimental plots of 0.5 ha established in Scots pine stands located in the Central Mountain Range of Spain with different ecological conditions and in which different silvicultural practises are employed. A new method is proposed to asses the spatial pattern from hemispherical photographs, based on the variance between the gap fractions in sky sectors, which was calculated as a function of the angular distance. The results were compared with the spatial pattern analysis based on the second moment measure, and with the analysis of the structure of the tree number semivariogram. The three methods give a very similar scale of the pattern for most of the plots. The mature plot with more intensive silviculture showed a regular pattern at scales below 6 m. The mature plot in which the silviculture was less intensive showed a cluster pattern at scales around 10 m, and clustering at similar scales was detected during regeneration. Cluster patterns at scales around 5 m were found at the upper limit of the altitudinal range of Scots pine as well as at the lower limit, where Pyrenean oak stands merge with the pinewood. The method proposed allows the scale of the pattern of the canopy to be determined from hemispherical photographs, and can be easily implemented in forest inventories.
Internacional
Si
JCR del ISI
Si
Título de la revista
FOREST ECOLOGY AND MANAGEMENT
ISSN
0378-1127
Factor de impacto JCR
1,579
Información de impacto
Volumen
DOI
http://dx.doi.org/10.1016/j.foreco.2007.09.070
Número de revista
255
Desde la página
580
Hasta la página
590
Mes
OCTUBRE
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: I. CAÑELLAS
  • Autor: Agustin Rubio Sanchez UPM
  • Participante: I. BARBEITO
  • Autor: Fernando Montes Pita UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ecología y Paisaje
  • Departamento: Silvopascicultura