Quality assessment of the PRODES Cerrado deforestation data

Parente, Leandro; Nogueira, Sérgio; Baumann, Luís Rodrigo Fernandes; Almeida, Cláudio; Maurano, L. E. P.; Affonso, Adriana Gomes; Ferreira, Laerte Guimarães

doi:10.1016/j.rsase.2020.100444

Cited by 24 publications

(23 citation statements)

References 30 publications

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“…With regard to deforestation, our results indicate that forest formations were the most affected in absolute area (52.7 Mha ±0.99%), while savanna and grassland formations were the most affected in relative area, with a reduction in vegetation cover of 27.43% ±1.18% and 19.04% ±0.64%, respectively, between 1988 and 2018, mainly affecting the Cerrado, Pantanal, and Caatinga biomes [35][36][37][38] . This can be explained by the negligence of the Brazilian state in monitoring deforestation in the country's non-forest formations, instituting the PRODES Cerrado only in 2016 5 , more than two decades after the beginning of PRODES Amazônia, the system responsible for monitor only forest formations in the Legal Amazon 39 . Specifically in the Legal Amazon, the period from 2008 to 2014 had the smallest deforested areas (see Supplementary Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Such approaches, however, are not free from the bias of subjectivity and the criteria of each interpreter, the occurrence of eventual georeferencing errors or, depending on the image resolution, the presence of pixels with spectral mixing 20 . On the other hand, the synergy between spatially explicit mappings, based on the use of automated classifiers, and point samples is necessary, either for validation purposes or for area adjustments 5,14,19,20 .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, intense changes in land use and land cover, triggered by state and private actions, occurred from the 1970s onwards 4 . In the Cerrado biome, for example, agricultural expansion resulted in the suppression of more than 50% of the native vegetation cover and the fragmentation of a large portion of its remnants, as well as socio-territorial impacts, such as the migration of a large part of the rural population for cities 5,6 . Another biome heavily impacted by agricultural expansion was the Amazon [7][8][9][10] , with the incidence of a similar conversion process of native vegetation in pasture and soybean intensified from the 1980s.…”

Section: Introductionmentioning

confidence: 99%

“…Probio and Terraclass), in addition to monitoring systems for the suppression of native vegetation in the Brazilian biomes, coordinated by the National Institute for Space Research (INPE) (i.e. PRODES and DETER 5,13 ).…”

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confidence: 99%

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Shaping the Brazilian landscape: a process drive by land occupation, large-scale deforestation, and rapid agricultural expansion

Parente¹,

Mattos

Baumann

et al. 2021

Preprint

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Brazil is one of the largest food producers in the world, a leading role that prompted a profound process of anthropization of itslandscapes. Knowing the dynamics and dimension of these transformations is essential for a more efficient and sustainable useof the country’s natural resources. Thus, in this study we present, based on an unprecedented sample design and interpretationof 85,152 sample points in Landsat images, the area estimates of the main land cover and land use classes in Brazil, as wellas their annual transitions, from 1985 to 2018. Our results indicate that, of the 850 Mha that comprise the national territory,294.2 Mha±1.44%were anthropized in 2018, with ~34%of this area converted after 1985. In this period, there was a loss of98.2 Mha±2.27%of natural vegetation, and an increase of 55.1 Mha±0.64%in the pasture areas and 28.2 Mha±0.29%in theareas of annual crops. The transition analysis showed that 83.07 Mha±1.31%of pastures and 9.64 Mha±0.45%of agriculture(annual, semi-perennial, and perennial combined) occurred over natural vegetation, 18.12 Mha±0.63%of pastures wereconverted to agriculture, while another 9.7 Mha±0.45%were abandoned, which can serve as important land reserves for otheruses. The vast public dataset, approaches (simple, robust, and straightforward), codes and tools (open and available) utilizedin this study can be easily employed in any other region of the world, in support of environmental monitoring and improvedterritorial governance practices.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Shaping the Brazilian landscape: a process drive by land occupation, large-scale deforestation, and rapid agricultural expansion

Parente¹,

Mattos

Baumann

et al. 2021

Preprint

Self Cite

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“…These pressures have been increasingly intensive and frequent, primarily due to the expansion of the agricultural frontier. As a result, although the productivity per hectare has increased considerably over the last decades, the substitution rate of natural vegetation with cultivated areas in the Cerrado remains with the highest values among the Brazilian biomes [19][20][21][22]. A good example is the region named Matopiba, concerning its localization among the Brazilian states of Maranhão (MA), Tocantins (TO), Piauí (PI), and Bahia (BA) [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Assessing Wildfire Regimes in Indigenous Lands of the Brazilian Savannah-Like Cerrado

Melo¹,

Sparacino²,

Argibay³

et al. 2021

Fire

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The Brazilian savannah-like Cerrado is classified as a fire-dependent biome. Human activities have altered the fire regimes in the region, and as a result, not all fires have ecological benefits. The indigenous lands (ILs) of the Brazilian Cerrado have registered the recurrence of forest fires. Thus, the diagnosis of these events is fundamental to understanding the burning regimes and their consequences. The main objective of this paper is to evaluate the fire regimes in Cerrado’s indigenous lands from 2008 to 2017. We used the Landsat time series, at 30 m spatial resolution, available in the Google Earth Engine platform to delineate the burned areas. We used precipitation data from a meteorological station to define the rainy season (RS), early dry season (EDS), middle dry season (MDS), and late dry season (LDS) periods. During 2008–2017, our results show that the total burned area in the indigenous lands and surrounding area was 2,289,562 hectares, distributed in 14,653 scars. Most fires took place between June and November, and the annual burned area was quite different in the years studied. It was also possible to identify areas with high fire recurrence. The fire regime patterns described here are the first step towards understanding the fire regimes in the region and establishing directions to improve management strategies and guide public policies.

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Wood predictors in neotropical streams: Assessing the effects of regional and local controls in Amazon and Cerrado catchments

Saraiva

Kaufmann

Rutherfurd

et al. 2022

Earth Surf Processes Landf

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Large wood plays a critical role providing complex habitat structure in rivers and streams. The instream wood regime consists of wood recruitment, transport, retention, and decay in river corridors. In tropical streams, transport and decay are thought to be the dominant influences on the amount of instream wood stored, and these are driven by upstream forest cover, as well as catchment hydroclimatic and geomorphic characteristics. Lack of studies of the tropical wood regime leave many uncertainties. Notably, the wood regimes in the neotropical Amazon and Cerrado biomes are not known, and rapidly changing land use threatens efforts to understand their natural wood regime. We investigated predictors of instream wood in catchments of the Amazon and Cerrado subject to a wide range of agricultural land use to identify the critical factors controlling wood recruitment and load. Using the structural equation modelling technique, we disentangled the complex net of regional and local controls. Contrary to our expectations, local drivers—such as the relation between the piece size and channel dimensions, discharge, stream power, and riparian forest—were the most important predictors of instream wood. The amounts of wood found in these streams were primarily the result of the wood delivered by the local riparian forest and how much of that wood remains trapped. Therefore, the preservation of the forested riparian zones in Amazon and Cerrado streams is crucial for maintaining the sources of wood as well as the channel morphology capable of trapping and retaining instream wood. Further research should compare reference and disturbed streams to quantify the influence of anthropogenic activities on instream wood and its primary influences. This information would facilitate assessing the extent of human alteration and developing mitigating measures to arrest or reverse changes that reduce instream wood and degrade aquatic and riparian habitat in neotropical rivers and streams.

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Quality assessment of the PRODES Cerrado deforestation data

Cited by 24 publications

References 30 publications

Shaping the Brazilian landscape: a process drive by land occupation, large-scale deforestation, and rapid agricultural expansion

Shaping the Brazilian landscape: a process drive by land occupation, large-scale deforestation, and rapid agricultural expansion

Assessing Wildfire Regimes in Indigenous Lands of the Brazilian Savannah-Like Cerrado

Wood predictors in neotropical streams: Assessing the effects of regional and local controls in Amazon and Cerrado catchments

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