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Land Cover and Wildfire Risk: A Multi-Buffer Spatial Analysis of the Relationship Between Housing Destruction and Land Cover in Chile’s Bío-Bío Region in 2023
(MDPI AG, 2025-05-13)
Benedikt Hora
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GONZALEZ MATHIESEN, MARIA CONSTANZA
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Natalia Aravena-Solís
;
Tomás Tapia
Wildfires pose increasing risks to human settlements, particularly in the Wildland–Urban Interface (WUI). This study examines the relationship between land cover (LC) characteristics and housing destruction during the 2023 wildfires in Chile’s Bío-Bío region. Using high-resolution remote sensing data and GIS-based multi-buffer spatial analysis (30 m and 100 m), we assessed LC patterns around affected and unaffected rural houses. Results indicate that the proximity of forest plantations significantly increased housing loss, with a notably higher presence of plantations within 30 m of destroyed houses. In contrast, agricultural and pasture mosaics demonstrated a protective function by reducing fire spread. Shrublands also showed moderate protection, albeit with statistical uncertainty. The findings highlight the critical role of immediate LC in determining wildfire impact, emphasizing the need for integrating LC considerations into wildfire risk management, land-use planning, and policy interventions. Strategies such as creating defensible spaces, enforcing zoning regulations, and promoting fire-resistant landscapes can help mitigate future wildfire damage. This research provides spatially explicit insights that contribute to wildfire risk reduction theory and inform targeted prevention and resilience-building strategies in Chile and other fire-prone regions.
6
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Evacuation patterns and socioeconomic stratification in the context of wildfires
(Springer Science and Business Media LLC, 2025-03-18)
T. Naushirvanov
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E. Elejalde
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K. Kalimeri
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E. Omodei
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M. Karsai
2
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Guide proposal for urban planning for fostering wildfire resilient timber construction in the urban-rural interface
(2021-08)
GONZALEZ MATHIESEN, MARIA CONSTANZA
;
March, Alan
13
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Diversifying Chile’s climate action away from industrial plantations
(2021)
Jorge Hoyos-Santillan
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Alejandro Miranda
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Antonio Lara
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Armando Sepulveda-Jauregui
;
Carlos Zamorano-Elgueta
Scopus© Citations 18 5
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Long-established rules and emergent challenges: spatial planning and wildfires in Chile
(2022)
GONZALEZ MATHIESEN, MARIA CONSTANZA
;
Alan March
Scopus© Citations 16 3
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Assessing the socio-economic and land-cover drivers of wildfire activity and its spatiotemporal distribution in south-central Chile
(2022)
Rocío A. Pozo
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Mauricio Galleguillos
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Mauro E. González
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VÁSQUEZ LAVÍN , FELIPE ANTONIO
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Rodrigo Arriagada
Scopus© Citations 33 6
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An Analysis of the Effects of Large Wildfires on the Hydrology of Three Small Catchments in Central Chile Using Tritium-Based Measurements and Hydrological Metrics
(2022)
Francisco Balocchi
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RIVERA SALAZAR, DIEGO ANDRÉS
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José Luis Arumi
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Uwe Morgenstern
;
Donald A. White
Wildfires are an important disturbance affecting catchments’ soil and hydrological processes within. Wildfires are predicted to increase in both frequency and severity under climate change. Here, we present measurements of tritium (3H) in surface water of three streams before and after the ‘las Máquinas’ megafire of January 2017 in central Chile and streamflow metrics. Mean transit times (MTTs) of water were calculated in three coastal catchments with the Mediterranean climate type, covered by native forest, a mixture of native forest and Pinus radiata D. Don, and P. radiata. Lumped parameter models (LPMs) were used to obtain MTTs. Tritium activities from 2012 to 2018 ranged from 0.597 to 0.927 Tritium Units (TU), with the lowest TU activity in 2018. These 3H concentrations indicated water ages from 5 to 30 years. Following the fire, peak flows and baseflow have increased in two catchments but decreased in the third. Even though we have seen changes in the hydrological responses within the three catchments, pre- and post-fire MTT values were not significantly different. Therefore, there is no conclusive evidence of hydrological changes at the groundwater level due to wildfire at this early stage. However, since the MTT ranges from 5 to 30 years, it is likely that more time is required for the changes in the hydrograph to be clearly reflected in the tritium signal even though there are noticeable changes in streamflow metrics such as runoff and baseflow. Within the following years from this study, a sampling schedule to continue to investigate both the long-term drought and the effect of wildfire on these catchments will be maintained.
1Scopus© Citations 10 1
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Developing guidelines for increasing the resilience of informal settlements exposed to wildfire risk using a risk-based planning approach
(2021)
GONZALEZ MATHIESEN, MARIA CONSTANZA
;
Alan March
Scopus© Citations 5 2

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