Determination of the level of anthropic modifications on wetlands as a criterion for environmental planning in the basin of lake BUDI, IX Region of Araucanía
- Peña Cortés, Fernando - Gutiérrez, P. - Rebolledo Castro, Gonzalo - Escalona Ulloa, Miguel - Hauenstein Barra, Enrique - Bertrán, Carlos - Schlatter, Roberto - Tapia, J.
- Facultad de Recursos Naturales
- Fecha de publicación:
- Datos de publicación:
- Revista de Geografía Norte Grande, N°36, 75-91, 2006
- Cuencas hidrográficas - Humedales - Antropización - Planificación territorial
- Medio Ambiente 
- The level of human impact on the wetlands of the Lago Budi Basin was established, as a function of the degree of alteration to the basin and the degree of alteration to the wetlands. The former was evaluated on the basis of a spatial analysis of the fragility and stability of the hydrographical basin. The latter through a modified impact model, with a panel of experts who evaluated the fulfilment of the wetlands' function and their state. Four principal types of wetlands were recognized: estuarine, meadow, waterside and marshy. It was found that 98% of the total surface presents a high degree of alteration, as determined by its instability and fragility. Farm use was weighted as the principal agent of alteration of the wetlands' functions, with 61% of this showing alteration in the maximum degree. This evaluation makes it possible to differentiate areas and generate base criteria for the conservation of wetlands in the basin.