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Forestry 2009 82(1):1-16; doi:10.1093/forestry/cpm032
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© Institute of Chartered Foresters, 2009. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Development of a stand density management diagram for radiata pine stands including assessment of stand stability

F. Castedo-Dorado1,*, F. Crecente-Campo2, P. Álvarez-Álvarez3 and M. Barrio-Anta4

1 Departamento de Ingeniería Agraria, Universidad de León. Escuela Superior y Técnica de Ingeniería Agraria, Avenida de Astorga, 24400 Ponferrada, Spain
2 Departamento de Ingeniería Agroforestal
3 Departamento de Producción Vegetal, Universidad de Santiago de Compostela, Escuela Politécnica Superior, Campus Universitario, 27002 Lugo, Spain
4 Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Escuela Universitaria de Ingenierías Técnicas, C/Gonzalo Gutiérrez Quirós, 33600 Mieres, Spain

* Corresponding author. E-mail: fcasd{at}unileon.es


  Abstract

A stand density management diagram (SDMD) was constructed for Pinus radiata D. Don plantations in Galicia (north-western Spain) on the basis of four equations that were fitted simultaneously to data collected from 223 permanent plots. The relative spacing index was used to characterize the growing stock. The diagram provides information about quadratic mean diameter, stand merchantable volume, stand above-ground biomass, stand stem biomass and stand carbon pools. In addition, an estimation of the average slenderness coefficient for the whole stand and for each quarter of the stand diameter distribution was included. This information can be used to assess the stability of the whole stand and different crown classes, respectively. The SDMD outlined here allows foresters to make quick and easy comparisons among different thinning schedules in which both timber production and the risk of damage from wind or snow are considered. Two alternative density management systems, one that includes thinning operations and another that only includes the density-related mortality provided by a mortality function, are outlined in the diagram.

Received 20 February 2007.
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