Influence of bark thickness on carbon determination in Pinus caribaea Morelet var. caribaea B. & G. in Guamuhaya conditions, Sancti Spíritus province
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Abstract
Using 33 temporal plots (500 m2 each) in plantations of Pinus caribaea M. var. caribaea B.&G. in the mountains of Cuban south-centre and the normal diameter, total height and bark thickness by tree, it was calculated the total volume with bark, without bark and bark volume in order to evaluate the bark importance, its variation tendency whit respect to normal diameter, the effect of carbon in wood and bark on the determination of total carbon and a method to estimate bark volume. The mean bark volume was 15,47 % (between 9,02 and 23,60 %) of total volume whit bark; when normal diameter increases that rate diminish, but not in a lineal way and also, it reduces its variability; the estimation of trunk total carbon without a differentiation between wood and bark gave place to an over-estimation of 41,25 tC • ha-1 (18,08 %) and the lineal model [Bark vol/ha = f (Tot vol with bark/ha)] presented a determination coefficient of 82,02 %,
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