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Stand growth model using volume increment/basal area ratios

Author

Listed:
  • G. J. Martínez Pastur

    (Centro Austral de Investigaciones Científicas - Consejo Nacional de Investigaciones Científicas y Técnicas, Tierra del Fuego, Argentina)

  • J. M. Cellini

    (Facultad de Cs. Agrs. y Ftales., Universidad Nacional de La Plata, Buenos Aires, Argentina)

  • M. V. Lencinas

    (Centro Austral de Investigaciones Científicas - Consejo Nacional de Investigaciones Científicas y Técnicas, Tierra del Fuego, Argentina)

  • P. L. Peri

    (Instituto Nacional de Tecnología Agropecuaria, Universidad Nacional de la Patagonia Austral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Cruz, Argentina)

Abstract

Estimation of stand growth is crucial for forest planning. Estimations were usually done using fixed values, and recently growth equations have been used. An alternative is through stand growth models. The objective was to develop a simple model for Nothofagus pumilio stands with full density along site quality and age gradients. The sample was obtained from 125 stands. Data on forest structure and samples for tree-ring measurement were taken in all trees to estimate growths using biometric models previously developed. The growth values of each plot during the last twenty years were calculated to fit the model, using the ratio of total volume increment/basal area as an independent variable. The developed model gives a ratio between stand volume increment and basal area (m/year) in relation to the site quality and stand age. The statistics (r2 = 0.819, mean error = 0.019, absolute mean error = 0.033), residual analysis and biological performance were satisfactory. The obtained stand growths varied between 1 and 20 m3/ha/year. This simple model allowed to estimate growth values at a stand level from easy field measurements from forest inventories.

Suggested Citation

  • G. J. Martínez Pastur & J. M. Cellini & M. V. Lencinas & P. L. Peri, 2008. "Stand growth model using volume increment/basal area ratios," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 54(3), pages 102-108.
    • Handle: RePEc:caa:jnljfs:v:54:y:2008:i:3:id:3100-jfs
    DOI: 10.17221/3100-JFS
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    Citations

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    Cited by:

    1. H. Attis Beltrán & G. Martínez Pastur & H. Ivancich & M.V. Lencinas & L.M. Chauchard, 2013. "Tree health influences diameter growth along site quality, crown class and age gradients in Nothofagus forests of southern Patagonia," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 59(8), pages 328-336.
    2. H. Ivancich & G.J. Martínez Pastur & M.V. Lencinas & J.M. Cellini & P.L. Peri, 2014. "Proposals for Nothofagus antarctica diameter growth estimation: simple vs. global models," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 60(8), pages 307-317.

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