Modelación Calidad de sitio en plantación juvenil de teca
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Resumen: Bajo el concepto, manejo sostenible de plantaciones forestales, previo a la siembra de teca en zona de uso agroforestal en el norte del Urabá Chocoano, Costa Caribe, Colombia, Sur América se realizó la calificación de sitio por método indirecto (topografía, edafología y clima), identificándose buena aptitud de uso. El monitoreo del crecimiento en la etapa juvenil inició a año y medio de edad con el establecimiento de 31 parcelas circulares de 300m², bajo el criterio de muestreo estratificado por calidad de sitio. Los datos recabados durante cuatro años, se utilizaron para el cálculo de IS con las ecuaciones de Schumacher, Korf y Richard-Chapman. Las regresiones arrojaron estadígrafos de R² Schumacher (67,2446%), Korf (67,5393%) y Richard-Chapman (67,4306%), la comparación para muestras pareadas indicó no diferencia significativa entre los dos últimos modelos. Los resultados para edad de referencia (12 años) en la familia de curvas IS promedio indican con Korf un límite superior 22,62m. e inferior 12,57m., Schumacher 19,94m y 11,80m. y Richard-Chapman 22,28m y 13,25m. La comparación de los rangos IS Korf con los hallados por (Torres, Delvalle y Restrepo, 2011) región Caribe Colombia, IS superior 24,7 metros e inferior 9,8m., ubica los valores estimados al interior de estos niveles. El análisis por parcela presentó igual comportamiento.
Abstract: Under the concept “sustainable management in forest plantations” previous sowing a teak Tectona grandis plantation on an agro-forest field in the north part of The Urabá Chocoano, Caribbean coast in Colombia South America, qualification of site was done by indirect method (topography, edaphology and climate) identifying it suitable to use. Monitoring young stage growth started one and a half year after sowing by establishing 31 round sample plots of 300 m2 under quality of site stratification criterion. Gathered data during four years were used to calculate the S.I. with the Schumacher and Korf equations. The return showed R² of 67.2446% for Schumacher, 67.5393% for Korf and (67, 4306%) for Richard y Chapman, the paired sample comparison was not significantly different. The resulting S.I. curves at a base age of twelve years old indicated with Korf a mean dominant height of 22.62 m on the best sites, and 12.57 m on the worst sites, Schumacher a mean dominant height of 19,94m on the best sites, and 11.80 m on the worst sites and Richard y Shapman a mean dominant height of 22.28m on the best sites, and 13,25m on the worst sites. Comparison of Korf’s S.I. ranges with those reported by Torres, Del valle and Restrepo in 2011 in the Caribbean region of Colombia (S.I. 24.7 and 9.8m accordingly) placed the estimated values within these ranges. The analysis in each plot showed the same behavior.
Abstract: Under the concept “sustainable management in forest plantations” previous sowing a teak Tectona grandis plantation on an agro-forest field in the north part of The Urabá Chocoano, Caribbean coast in Colombia South America, qualification of site was done by indirect method (topography, edaphology and climate) identifying it suitable to use. Monitoring young stage growth started one and a half year after sowing by establishing 31 round sample plots of 300 m2 under quality of site stratification criterion. Gathered data during four years were used to calculate the S.I. with the Schumacher and Korf equations. The return showed R² of 67.2446% for Schumacher, 67.5393% for Korf and (67, 4306%) for Richard y Chapman, the paired sample comparison was not significantly different. The resulting S.I. curves at a base age of twelve years old indicated with Korf a mean dominant height of 22.62 m on the best sites, and 12.57 m on the worst sites, Schumacher a mean dominant height of 19,94m on the best sites, and 11.80 m on the worst sites and Richard y Shapman a mean dominant height of 22.28m on the best sites, and 13,25m on the worst sites. Comparison of Korf’s S.I. ranges with those reported by Torres, Del valle and Restrepo in 2011 in the Caribbean region of Colombia (S.I. 24.7 and 9.8m accordingly) placed the estimated values within these ranges. The analysis in each plot showed the same behavior.