RESUMENLa gestión de la emergencia ante un evento de inundación por tsunami en Chile fue estudiada en el área urbana de Puerto Saavedra, Región de La Araucanía. Este procedimiento consistió en tres etapas: (1) evaluación y zonifi cación del riesgo en base a la metodología propuesta por las Naciones Unidas (ONU), (2) ejecución de talleres de participación ciudadana según la metodología AIDEP, y (3) confección de cartografía indicando zonas de seguridad y rutas de evacuación. Los resultados mostraron dos categorías de riesgo: máximo, asociada al área urbana, y sin riesgo, asociada al cordón montañoso. La comunidad no percibió como máximo el riesgo de inundación por tsunami, lo que dependería de la localización de las unidades vecinales y de la priorización de los riesgos más inmediatos. La aproximación de este estudio es de utilidad para la actualización de planes de protección civil en zonas litorales, experiencia que puede ser replicada en comunas costeras del país y Latinoamérica.Palabras clave: Tsunami, riesgos naturales, plan protección civil, participación ciudadana, mapa de riesgo. ABSTRACTEmergency management of tsunami fl oods in Chile was studied in the urban area of Puerto Saavedra, Araucanía Region. This procedure consisted of three stages:(1) risk assessment and zoning based on the methodology proposed by the United Nations (UN), (2) implementation of citizen participation workshops, according to the AIDEP methodology, and (3) implementation of maps indicating safety areas and evacuation routes. The results showed two risk categories: maximum, associated to the urban area, and no risk, associated to mountain range. The community did not perceive the risk of fl ooding due to tsunami as a maximum, which depended on the location of housing developments and the prioritization of the most immediate risks. The approach of this study is useful for updating civil protection plans in coastal areas, an experience that can be replicated in the coastal districts of the country and the rest of Latin America.

The expansion of agricultural, forest plantation, and urban areas is among the main drivers of worldwide land use/cover change. However, little is known about the changes in the extent of highly profitable crops in the temperate zones of South America and their association with other land use/cover changes, especially in south-central Chile, which has experienced massive changes in recent decades. In this context, we aimed to assess land use/cover and fruit crop area changes at the regional and county levels in the Araucanía region, Chile. Hence, the quantity and location of past and future changes were identified using cross-tabulation Markov chains and cellular automata. The results showed that agricultural land and meadows have decreased by 18% and 26%, respectively, between 1997 and 2013, mainly due to the expansion of forest plantations and urban areas. However, the fruit crop area increased by 645% between the years 2000 and 2019 and will continue increasing to 2033. These changes modified the relative weights of economic activities within the region, changing from cattle raising and marginal agriculture to more profitable activities such as fruit crops and forest plantations. Finally, this work shows a need to move toward the spatial monitoring of agriculture and fruit crops within the country.