Caracterización del crecimiento dasométrico de una plantación de Pinus radiata D. Don con fines de manejo silvicultural en la parroquia San Juan, provincia de Chimborazo

Abstract

This research focused on characterizing the dasometric growth of a Pinus radiata D. Don plantation of approximately 28 years of age, located in the San Juan town, Chimborazo Province, in order to propose adequate silvicultural management. The main results obtained were an average diameter at breast height (DBH) of 32.33 cm, an average total height of 13.18 m, a basal area of 62.79 m2/ha and an estimated volume of wood in foot of 425.19 m3/ha. These values represent 38.58%, 68.73% and 121.5% respectively compared to the growth data referenced by Ecuador Forestal for this species. These greater growths are attributed to the quality of the plant used, the scarce application of thinning and pruning, the high planting density and the specific edaphoclimatic conditions of the site. On the other hand, the quality of the standing trees was evaluated considering factors such as bifurcations, inclination, straightness of the trunk, damage, thickness of branches, phytosanitary status, spiral grain and quality of logs. These structural features determined a general quality index of 2.40%, affected by the absence of silvicultural management, thus limiting the commercial value and industrial uses of the wood. Finally, a forestry harvesting plan was proposed through clear felling, with the main objective of marketing standing timber at an average price of $11/m3, adjusted to the forestry legal framework in force in the country. This proposal seeks regulated and responsible management of timber resources.