Evaluación dasométrica y edáfica en una plantación de Pinus radiata D. Don en la parroquia San Andres de la provincia de Chimborazo, Ecuador.

Abstract

The aim of this research was to evaluate the dasometric and edaphic part of a pine plantation in the parish of San Andres; for the dasometric part, the site was recognized, where the GPS points of the plantation were taken to later make the map and obtain the surface of the study area; in the field, four circular plots of 250 square meters with a radius of 8.92 meters were installed with a random sampling system. For the estimation of growth and productivity, the diameter at breast height (DBH) was taken using a diametric tape and a SUNNTO clinometer was used for the total height. For the edaphic evaluation, 2 pits of 1 cubic meter were made, two samples were collected at each depth, with a total of 4 samples per pit and one more repetition for each depth, for a total of 6 samples per depth, then the physical-chemical analysis was made in the soil laboratory of the Faculty of Natural Resources, where the color, texture, apparent density, structure, humidity, pH, organic matter and chemical elements were determined. A descriptive statistical analysis was performed and the hypothesis was tested with Student's t-test for one sample. The average values obtained for the DBH variables were 26.32 centimeters, total height 26.26 meters, average basal area per tree 0.06 square meters, volume per hectare was 481.8 cubic meters, sandy loam soil texture, pH slightly acidic to neutral, bulk density ranging from 1.32 to 1.33 grams per cubic centimeter. The sandy loam soil, pH obtained if suitable for P. radiata species.