@InProceedings{SeciCPSALAAJ:2022:FiTrVa,
author = "Seci, Mat{\'u}s and Carmenta, Rachel and Pessoa, Ana Carolina
Moreira and Silva J{\'u}nior, Celso Henrique Leite da and Andela,
Niels and Le Quere, Corinne and Anderson, Liana O. and
Arag{\~a}o, Luiz Eduardo Oliveira e Cruz de and Jones, Matthew
William",
affiliation = "{University of East Anglia} and {University of East Anglia} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Cardiff University}
and {University of East Anglia} and {Centro Nacional de
Monitoramento e Alerta de Desastres Naturais (CEMADEN)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of East Anglia}",
title = "Fire trends and variability across distinct human typologies of
the Brazilian Amazon",
year = "2022",
organization = "AGU Fall Meeting",
publisher = "AGU",
abstract = "Limiting deforestation fires and wildfires in Amazonia is central
to protecting one of Earths densest carbon stocks and to
safeguarding the well-being of populations living in the region.
Humans significantly alter the patterns and trends of fire in
tropical forests by intentionally igniting fires for
deforestation, unintentionally igniting fires, and reducing the
resilience of forest edges to droughts, which are becoming more
frequent and extreme under anthropogenic climate change.
Nonetheless, spatial variation in the relationship between people
and fire has regularly been overlooked in analyses of fire
patterns in tropical forests, leading to an overgeneralised
understanding of how people influence fire trends in these regions
and an unsatisfactory capacity to model change in fire activity
under shifting climatic and socioeconomic circumstances. Here, we
use a novel combination of social, economic, infrastructure and
land use datasets with a clustering approach to distinguish four
distinct human typologies in over 500 municipalities of the
Brazilian Amazon. We show that trends and variability in fire
ignition rate, fire size, and burned area vary across the types.
The burned area fraction reaches up to 10% during drought years in
the specialised cattle ranching type, compared to 5% or less in
the diversified agriculture type, 3% or less in the subsistence
economy type, and less than 1% in the traditional type. We also
show that the seasonality of fire is strongly modulated by humans
in intensive agriculture types as compared with subsistence
economy or traditional types, with the largest fires occurring
earlier in the dry season. Our results demonstrate that making
better use of diverse datasets spanning the environmental and
social sciences can unlock new understanding of fire patterns in
Amazonia. Our results suggest that policies intending to reduce
environmental degradation may be most successful if targeted in
specific municipalities and during specific periods of the year,
especially during droughts. Our typological map of distinctive
human spaces in Amazonia could also be used to improve the
integration of human controls on fire in the region, bringing
fresh opportunities to improve model predictions of fire and
ecosystem disturbance under climate and socioeconomic change.",
conference-location = "Chicago, IL",
conference-year = "12-16 Dec. 2022",
urlaccessdate = "23 maio 2024"
}