Propuesta metodológica para el cálculo de la biomasa de las coberturas boscosas en la cuenca hidrográfica río las Ceibas (Neiva-Huila), a partir de un modelo de regresión con insumos cartográficos

Abstract

This project presents a methodological proposal for calculating the biomass of forest cover in the Las Ceibas river basin in the city of Neiva (Huila), using an exponential regression model with cartographic inputs and the implementation of geographic information system tools. The aspects to be considered in the regression model are the interpretation of land cover using Corine Land Cover methodology at a scale of 1:25,000, evaluation of natural cover change rates using the methodology of the Alexander von Humboldt Institute, calculations of the normalised vegetation index NDVI with satellite images, generation and analysis of terrain slope maps in percentage using the methodology of the Agustín Codazzi Geographic Institute. This methodological proposal seeks to solve problems such as the limited access to certain areas of the Colombian territory, field plots and to be a preliminary technical support for the application of direct and indirect methods for biomass quantification in small areas of land. In this sense, the proposal could become a tool that allows the calculation of the biomass of forest cover based on these cartographic products, which can then be validated in the field with traditional methods. In the development of this methodological proposal, approximate biomass results were obtained, whose values are expressed in tonnes per hectare. For the calculation of biomass, the coverages were classified by forest types and slope grades in order to determine a more detailed analysis of the behaviour of the exponential regression model when applied in this methodological proposal for the calculation of biomass in the Las Ceibas river basin.