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    Author(s): D. Vega-Nieva; J. Briseño-Reyes; M. Nava-Miranda; E. Calleros-Flores; P. López-Serrano; J. Corral-Rivas; E. Montiel-Antuna; M. Cruz-López; M. Cuahutle; R. Ressl; E. Alvarado-Celestino; A. González-Cabán; E. Jiménez; J. Álvarez-González; A. Ruiz-González; R. Burgan; H. Preisler
    Date: 2018
    Source: Forests. 9(4): 190
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (11.0 MB)

    Description

    Understanding the linkage between accumulated fuel dryness and temporal fire occurrence risk is key for improving decision-making in forest fire management, especially under growing conditions of vegetation stress associated with climate change. This study addresses the development of models to predict the number of 10-day observed Moderate-Resolution Imaging Spectroradiometer (MODIS) active fire hotspots—expressed as a Fire Hotspot Density index (FHD)—from an Accumulated Fuel Dryness Index (AcFDI), for 17 main vegetation types and regions in Mexico, for the period 2011–2015. The AcFDI was calculated by applying vegetation-specific thresholds for fire occurrence to a satellite-based fuel dryness index (FDI), which was developed after the structure of the Fire Potential Index (FPI). Linear and non-linear models were tested for the prediction of FHD from FDI and AcFDI. Non-linear quantile regression models gave the best results for predicting FHD using AcFDI, together with auto-regression from previously observed hotspot density values. The predictions of 10-day observed FHD values were reasonably good with R2 values of 0.5 to 0.7 suggesting the potential to be used as an operational tool for predicting the expected number of fire hotspots by vegetation type and region in Mexico. The presented modeling strategy could be replicated for any fire danger index in any region, based on information from MODIS or other remote sensors.

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    Citation

    Vega-Nieva, D.; Briseño-Reyes, J.; Nava-Miranda, M.; Calleros-Flores, E.; López-Serrano, P.; Corral-Rivas, J.; Montiel-Antuna, E.; Cruz-López, M.; Cuahutle, M.; Ressl, R.; Alvarado-Celestino, E.; González-Cabán, A.; Jiménez, E.; Álvarez-González, J.; Ruiz-González, A.; Burgan, R.; Preisler, H. 2018. Developing models to predict the number of fire hotspots from an accumulated fuel dryness index by vegetation type and region in Mexico. Forests. 9(4): 190. https://doi.org/10.3390/f9040190.

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    Keywords

    MODIS, fire hotspots, fire occurrence risk, fire danger systems

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