Soluciones basadas en la naturaleza: evaluación de factibilidad de humedales artificiales para la recuperación de la Laguna Avendaño en Quillón.
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Date
2026
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Universidad de Concepción
Abstract
La Laguna Avendaño, ubicada en la comuna de Quillón (Región de Ñuble, Chile), presenta un deterioro ambiental progresivo por procesos de eutrofización y aportes hídricos difusos. Esta investigación evalúa la factibilidad técnica, territorial y normativa-ambiental de implementar humedales artificiales como Soluciones basadas en la Naturaleza (SbN) para su recuperación funcional. Bajo un enfoque mixto cualitativo-exploratorio, la metodología integró el análisis de la conectividad hídrica del sistema canal-laguna, el levantamiento en terreno de nodos críticos mediante georreferenciación y el análisis espacial con Sistemas de Información Geográfica (SIG), junto a una revisión de los marcos regulatorios vigentes. Los resultados confirman que los humedales artificiales (tipologías de flujo subsuperficial y flotantes) son alternativas factibles y compatibles con el territorio para la interceptación de nutrientes en afluentes críticos del Canal Quillón. Se concluye que la viabilidad de estas SbN trasciende su desempeño biofísico, dependiendo de su correcta inserción en la gobernanza hídrica y los instrumentos de planificación local. El estudio aporta una perspectiva geográfica aplicada para la restauración de ecosistemas en contextos urbanos intermedios.
Laguna Avendaño (Avendaño Lagoon), located in the commune of Quillón (Ñuble Region, Chile), is experiencing progressive environmental degradation due to eutrophication processes and diffuse water inputs. This research evaluates the technical, territorial, and regulatory feasibility of implementing constructed wetlands as Nature-based Solutions (NbS) for its functional recovery. Adopting a mixed qualitative-exploratory approach, the methodology integrated an analysis of the hydraulic connectivity within the canal-lagoon system, field surveys of critical nodes using georeferencing, and spatial analysis with Geographic Information Systems (GIS), alongside a review of current regulatory frameworks. The results confirm that constructed wetlands (subsurface flow and floating typologies) are feasible alternatives, compatible with the territorial conditions for nutrient interception in critical tributaries of the Quillón Canal. It is concluded that the viability of these NbS transcends their biophysical performance, depending on their proper integration into water governance and local planning instruments. This study provides an applied geographical perspective for ecosystem restoration in intermediate urban contexts.
Laguna Avendaño (Avendaño Lagoon), located in the commune of Quillón (Ñuble Region, Chile), is experiencing progressive environmental degradation due to eutrophication processes and diffuse water inputs. This research evaluates the technical, territorial, and regulatory feasibility of implementing constructed wetlands as Nature-based Solutions (NbS) for its functional recovery. Adopting a mixed qualitative-exploratory approach, the methodology integrated an analysis of the hydraulic connectivity within the canal-lagoon system, field surveys of critical nodes using georeferencing, and spatial analysis with Geographic Information Systems (GIS), alongside a review of current regulatory frameworks. The results confirm that constructed wetlands (subsurface flow and floating typologies) are feasible alternatives, compatible with the territorial conditions for nutrient interception in critical tributaries of the Quillón Canal. It is concluded that the viability of these NbS transcends their biophysical performance, depending on their proper integration into water governance and local planning instruments. This study provides an applied geographical perspective for ecosystem restoration in intermediate urban contexts.
Description
Tesis presentada para optar al título de Geógrafo/a.
Keywords
Humedales, Lagunas Chile, Zonas urbanas, Eutrofización