modelación del crecimiento de albizia niopoides (mimosaceae) por métodos dendrocronológicos growth modeling of albizia niopoides (mimosaceae) using dendrochronological methods

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2012
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Abstract
El crecimiento anual de los anillos en los árboles de los bosques tropicales es bastante frecuente y se evidenció en los árboles de Albizia niopoides, que crecen en el cañón del río Porce, cordillera Central de los Andes colombianos. Se recolectaron 33 secciones transversales de árboles entre 664-870msnm, cortadas a partir de 1.3m de altura del suelo. La hipótesis sobre una periodicidad anual en los anillos fue demostrada mediante cofechado, spaguetti plots y análisis de C14. Para ajustar el diámetro al modelo de crecimiento de Korf se empleó una combinación de análisis descriptivo de series de tiempo (suavizado y pre-whitening); para filtrar el ruido climático y regresión no lineal con residuales ponderados, se alcanzó un coeficiente de determinación cercano al 100%. A pesar de no ser significativa, la autocorrelación serial positiva de orden 1, se explica por la existencia de reservas de energía en el tronco y por la acumulación de los incrementos del diámetro requeridos para la construcción del modelo de crecimiento. Las tasas de crecimiento corriente y medio máximos fueron 1.03 y 0.94cm/año a las edades de 18 y 46 años, respectivamente. Albizia niopoides se clasifica dentro del grupo de rápido crecimiento, las cuales pueden alcanzar diámetros de corta de más de 50cm en aproximadamente 52 años.
The annual growth rings in tropical trees are fairly common, but their study is relatively recent. Growth rings were found in trees of Albizia niopoides from the Porce River Canyon, Central Cordillera of the Colombian Andes. A total of 33 cross-sections were collected from trees distributed throughout the study area from 664-870masl. Cross-dating, spaguetti plot and 14C analyses were used to demonstrate ring annuality, assuming as hypothesis that these are real annual growth rings. A combination of descriptive analysis of time series (smoothing and prewhitening) to filter climate noise and nonlinear regression with weighted residuals was used to fit the diameter to Korf´s growth model, in which the coefficient of determination reaches values close to 100%. The positive residual autocorrelation of order 1, although not significant, is explained by the existence of energy reserves in the stem and by the accumulation of diameter increments required for the construction of the diameter growth model. The current and mean annual maximum increment rates are 1.03 and 0.94cm/year at ages 18 and 46 years old, respectively. These trees are classified within the group of fast growing species which can reach a cut diameter of over 50cm in approximately 52 years.
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giraldo2012revistamodelacin Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Víctor David Giraldo, Jorge Ignacio del Valle
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Journal science journal of university of zakho
Year 2012
DOI
DOI not found
URL
http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000300013
Keywords
crecimiento del diámetrobiology (general)

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