Evaluación del método de muestreo angular para el inventario de plantaciones forestales de Teca en la región Costa del Ecuador.

The precision and statistical efficiency are contrasted between two inventory methods, angular sampling and sampling of fixed surface plots, for the estimation of dasometric variables in Teak plantations of the Ecuadorian Coast Region. A simple random sampling without replacement was carried out to delimit 31 circular plots of 500 m2 in a three-year plantation. In each plot the normal diameter, the height of each tree and the working times were measured, also registering its position in the reference system WGS84-UTM-17S by means of an RTK. From the variables measured in the field, the number of trees per hectare, average basal area diameter, total basal area, average height of Lorey, total volume, aboveground biomass, CO2 fixation and carbon content in the aerial biomass were calculated. From the georeferencing of each tree in the circular plot of fixed area the selection of the trees was simulated according to the Basimetric Area Factor 0.5, 1, 1.5 and 2. For the data generated by the simulation of the angular sampling they were calculated the statistics of central tendency and dispersion of the variables, applying an ANOVA analysis and Tukey test to evaluate the mean differences of the variables. The results obtained show that the angular count method is sufficiently precise for the estimation of the main dasometric variables of young teak plantations, also presenting a higher efficiency in relation to the sampling of fixed surface plots.

• Autore principale: Mora Espinoza, Javier Alexander (author)
• Natura: bachelorThesis
• Lingua: spa
• Pubblicazione: 2019
• Soggetti: MÉTODO BITTERLICH; TÉCNICAS DE MUESTREO; INVENTARIOS FORESTALES; TECTONA GRANDIS; SIMULACIÓN
• Accesso online: http://repositorio.ucsg.edu.ec/handle/3317/12545