气候变化领域集成服务门户(CCPortal): Regional-Scale Assessment of Burn Scar Mapping in Southwestern Amazonia Using Burned Area Products and CBERS/WFI Data Cubes

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DOI	10.3390/fire7030067
	Regional-Scale Assessment of Burn Scar Mapping in Southwestern Amazonia Using Burned Area Products and CBERS/WFI Data Cubes
	Ferro, Poliana Domingos; Mataveli, Guilherme; Arcanjo, Jeferson de Souza; Dutra, Debora Joana; Medeiros, Thais Pereira de; Shimabukuro, Yosio Edemir; Pessoa, Ana Carolina Moreira; de Oliveira, Gabriel; Anderson, Liana Oighenstein
发表日期	2024
ISSN	2571-6255
起始页码	7
结束页码	3
卷号	7 期号:3
英文摘要	Fires are one of the main sources of disturbance in fire-sensitive ecosystems such as the Amazon. Any attempt to characterize their impacts and establish actions aimed at combating these events presupposes the correct identification of the affected areas. However, accurate mapping of burned areas in humid tropical forest regions remains a challenging task. In this paper, we evaluate the performance of four operational BA products (MCD64A1, Fire_cci, GABAM and MapBiomas Fogo) on a regional scale in the southwestern Amazon and propose a new approach to BA mapping using fraction images extracted from data cubes of the Brazilian orbital sensors CBERS-4/WFI and CBERS-4A/WFI. The methodology for detecting burned areas consisted of applying the Linear Spectral Mixture Model to the images from the CBERS-4/WFI and CBERS-4A/WFI data cubes to generate shadow fraction images, which were then segmented and classified using the ISOSEG non-supervised algorithm. Regression and similarity analyses based on regular grid cells were carried out to compare the BA mappings. The results showed large discrepancies between the mappings in terms of total area burned, land use and land cover affected (forest and non-forest) and spatial location of the burned area. The global products MCD64A1, GABAM and Fire_cci tended to underestimate the area burned in the region, with Fire_cci underestimating BA by 88%, while the regional product MapBiomas Fogo was the closest to the reference, underestimating by only 7%. The burned area estimated by the method proposed in this work (337.5 km2) was 12% higher than the reference and showed a small difference in relation to the MapBiomas Fogo product (18% more BA). These differences can be explained by the different datasets and methods used to detect burned areas. The adoption of global products in regional studies can be critical in underestimating the total area burned in sensitive regions. Our study highlights the need to develop approaches aimed at improving the accuracy of current global products, and the development of regional burned area products may be more suitable for this purpose. Our proposed approach based on WFI data cubes has shown high potential for generating more accurate regional burned area maps, which can refine BA estimates in the Amazon.
英文关键词	burned area; Amazon; regional assessment; linear spectral mixture model; CBERS; data cubes
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Forestry
WOS类目	Ecology ; Forestry
WOS记录号	WOS:001191620200001
来源期刊	FIRE-SWITZERLAND
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306111
作者单位	University of East Anglia; University of South Alabama; University of South Alabama
推荐引用方式 GB/T 7714	Ferro, Poliana Domingos,Mataveli, Guilherme,Arcanjo, Jeferson de Souza,et al. Regional-Scale Assessment of Burn Scar Mapping in Southwestern Amazonia Using Burned Area Products and CBERS/WFI Data Cubes[J],2024,7(3).
APA	Ferro, Poliana Domingos.,Mataveli, Guilherme.,Arcanjo, Jeferson de Souza.,Dutra, Debora Joana.,Medeiros, Thais Pereira de.,...&Anderson, Liana Oighenstein.(2024).Regional-Scale Assessment of Burn Scar Mapping in Southwestern Amazonia Using Burned Area Products and CBERS/WFI Data Cubes.FIRE-SWITZERLAND,7(3).
MLA	Ferro, Poliana Domingos,et al."Regional-Scale Assessment of Burn Scar Mapping in Southwestern Amazonia Using Burned Area Products and CBERS/WFI Data Cubes".FIRE-SWITZERLAND 7.3(2024).