Epidometría de Weinmannia Tomentosa en bosque altoandino de la reserva biológica Encenillo

Abstract

Knowledge about growth forest is a tool that can help to take the way to correct forest management planning, for determinate growth forest is necessarily have a base of dasometric measurements, these measurements must be like minimum tow in different period, in trees one of the easiest dasometric variables is diameter at breast height (DBH). This study took epidometric data from Andean Forest in the Biological Reserve El Encenillo in Guasca Cundinamarca- Colombia, the data were collected using Field-Map technology, the sampling was an inventory in a permanent sample plot with an area of 1 ha registering the species with diameters at 1.30 m height ≥ 10 cm, the sampling in 2018 is the re-measurement of two previous samplings that were performed in 2009 and 2013. Ecological Importance value Index- IVI were calculated to define the most Ecological important species, three tree species (Weinmannia tomentosa, Drimys granadensis and Bejaria resinosa) were selected, Weinmannia tomentosa was the most Ecological important specie in Encenillo’s forest, in 2009-2018 period were Measure 1412 trees, in first sampling 2009 were sampling 1366 trees, in 2013 all measures count 1385 trees which 1288 were alive, in 2018 1211 trees were alive. The Diameter classes were established with 2.5 cm width ranges, with these values were calculate the current annual increment (CAI) and mean annual increment (MAI) to the most Ecological important species, with the values of current annual increment were plotted for determine adjust CAI values representing the growth of each mean diameter classes with aim to assign absolute age values, with the age value per diameter classes were projected the induvial tree diameter growth model non distance dependent, for the species Weinmannia tomentosa and Drimys granadensis the models that had better fit were Bertalanffy-Richards and Logistic models, for Bejaria resinosa, the models that better fit were Gompertz and Logistic. For the species the average annual increase for Weinmannia tomentosa was 0.25cm/year, Drimys granadensis 0.51 cm/year and Bejaria resinosa 0.30 cm/year.