Curvas de crecimiento para comunidades forestales, en una región al sureste del estado de Jalisco, México

Abstract

One of the most important functions that forests fulfill is their capacity to store carbon, which varies according to their floristic composition, age and population density. Some models that estimate carbon balance base their estimates on empirical growth curves. In order to provide information for these estimates, the construction of growth curves for communities within the study area, based on a dominant species, were set as objectives. Data from the National Forest and Soil Inventory (2005-2009) were used to calculate the IVI by conglomerate and from a dendrogram calculated by the Ward method, forest communities dominated by one species were formed. A growth curve per community was constructed, based on the maximum yields per hectare, recorded by the forestry technicians at the average age, the percentage increases in volume per species at different ages, obtained by trunk analysis, were attributed. 5 communities dominated by Pinus oocarpa were formed with dominances from 21.08 to 54.38 %, P. douglasiana 41.45 to 89.83 %, P. devoniana 27.53 to 63.88 %, P. leiophylla 27.53 to 89.03 % and Quercus spp. 36.05 to 93.26%. The maximum yields for the stands within the study area were 329.98 m3/ha, 330.71 m3/ha, 171.35 m3/ha, and 127.46 m3/ha, respectively. The communities defined by a dominant species to which a growth curve was attributed will serve as the basis for estimating the carbon balance in this region of the state of Jalisco, Mexico.