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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21d.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34T/46Q6222
Repositorysid.inpe.br/mtc-m21d/2022/04.29.14.24   (restricted access)
Last Update2022:04.29.14.24.00 (UTC) simone
Metadata Repositorysid.inpe.br/mtc-m21d/2022/04.29.14.24.01
Metadata Last Update2023:01.03.16.46.05 (UTC) administrator
DOI10.3389/ffgc.2022.735017
ISSN2624-893X
Citation KeyOliveiraSoBuGoOmRa:2022:DeFiIm
TitleDeterminants of Fire Impact in the Brazilian Biomes
Year2022
MonthMar.
Access Date2024, May 11
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size6105 KiB
2. Context
Author1 Oliveira, Ubirajara
2 Soares Filho, Britaldo
3 Bustamante, Mercedes
4 Gomes, Letícia
5 Ometto, Jean Pierre Henry Balbaud
6 Rajao, Raoni
Group1
2
3
4
5 DIPE3-COGPI-INPE-MCTI-GOV-BR
Affiliation1 Universidade Federal de Minas Gerais (UFMG)
2 Universidade Federal de Minas Gerais (UFMG)
3 Universidade de Brasília (UnB)
4 Universidade de Brasília (UnB)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
6 Universidade Federal de Minas Gerais (UFMG)
Author e-Mail Address1 ubiologia@yahoo.com.br
2
3
4
5 jean.ometto@inpe.br
JournalFrontiers in Forests and Global Change
Volume5
Pagese735017
History (UTC)2022-04-29 14:24:47 :: simone -> administrator :: 2022
2023-01-03 16:46:05 :: administrator -> simone :: 2022
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
Keywordsmodeling
deforestation
land use change
protected areas
native vegetation
AbstractMore and more, wildfires are raging in large parts of the world due to a warmer climate, more frequent and severe droughts, and continued land-use changes. In Brazil, the weakening of public environmental policies has further aggravated wildfires with widespread impacts across the country. Here, we investigated the determinants of the impact of fire in the Brazilian biomes using a dataset of burned areas between 2001 and 2019 to simulate its future impact under alternative policy and climate scenarios. We began by deriving a fire impact index using a principal component (PC) analysis comprising the variables: 1. fire intensity, 2. fire recurrence, 3. burned area size, 4. mean time interval between successive fires, and 5. predominance of fires in the dry season. We considered as High Impact Fires (HIF) those areas whose values of the first PC were above the 90th percentile. HIF occurred in the Amazon, Cerrado, and Pantanal, but not in the Atlantic Forest, Pampa, and Caatinga biomes. As the main drivers of HIF, our spatial autoregressive models (SAR) (Amazonia R-2 = 0.66, Pantanal R-2 = 0.86 and Cerrado R-2 = 0.79) indicated the climate (Amazon, 25%, Pantanal, 53%, and Cerrado, 56%) together with land-use change (Amazon, 75%, Pantanal, 25%, and Cerrado, 38%). Most HIF occurred in native vegetation remnants (NVR) (55% in the Amazon, 86% in the Pantanal and 94% in the Cerrado), especially in places close to areas deforested over the last two decades. Only in Pantanal fuel loads (dry biomass) play a major role in HIF (22% of explanation). In the Cerrado, it only accounted for 4% of the observed variability and in the Amazon, it was not a significant factor. Over the analyzed period, HIF imposed a loss of 23%, on average, on the NDVI response of the native vegetation in the Amazon, 19% in the Cerrado and 16% in the Pantanal, thus indicating physiological stress. Simulations of future climate and land-use change pointed to a dramatic increase in HIF by 2050. Under the RCP4.5 and strong environmental governance scenario, HIF in the Cerrado would expand from the current 3% of the biome to 15%, from 7 to 8% in the Pantanal and from 0.7 to 1.2% in the Amazon. In addition, the impact of fire would intensify in 95% of the Cerrado, 97% of the Amazon and 74% of the Pantanal. Effective public and private policies will be vital to mitigate the growing threat of HIF. In this sense, our spatially explicit models can help direct prevention and firefighting programs.
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Next Higher Units8JMKD3MGPCW/46L2FGP
Citing Item Listsid.inpe.br/bibdigital/2022/04.04.04.47 2
DisseminationWEBSCI; PORTALCAPES; SCOPUS.
Host Collectionurlib.net/www/2021/06.04.03.40
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