The Causes and Consequences of Agricultural Expansion in Matopiba

Bragança, Arthur Amorim

doi:10.5935/0034-7140.20180008

Cited by 20 publications

(15 citation statements)

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“…Land-use change for agrobusiness expansion together with underlying climate change may induce higher frequency of extreme climate events 1 – 6 , increasing the exposure and vulnerability of tropical forests and Cerrado 7 – 9 . The transition zone between the Eastern Amazon and the Cerrado (EAC) biomes comprises the largest area of contact between forest and savanna in the tropics, with the Cerrado recognized as the world’s most biodiverse savanna 10 .…”

Section: Introductionmentioning

confidence: 99%

“…In the EAC, the MATOPIBA region (which includes the states of Maranhão, Tocantins, Piauí and Bahia—Extended Data Fig. 1 ) became an important agricultural frontier during the past 20 years 1 . The Cerrado is the dominant biome in the MATOPIBA (91% of the area), which also has patches of Amazon Forest and the Caatinga vegetation (shrubland vegetation typical of northeastern Brazil).…”

Section: Introductionmentioning

confidence: 99%

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Increased climate pressure on the agricultural frontier in the Eastern Amazonia–Cerrado transition zone

Marengo

Jiménez

Espinoza

et al. 2022

Sci Rep

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Several large-scale drivers of both anthropogenic and natural environmental changes are interacting nonlinearly in the transition zone between eastern Amazonia and the adjacent Cerrado, considered to be another Brazilian agricultural frontier. Land-use change for agrobusiness expansion together with climate change in the transition zone between eastern Amazonia and the adjacent Cerrado may have induced a worsening of severe drought conditions over the last decade. Here we show that the largest warming and drying trends over tropical South America during the last four decades are observed to be precisely in the eastern Amazonia–Cerrado transition region, where they induce delayed wet-season and worsen severe drought conditions over the last decade. Our results evidence an increase in temperature, vapor pressure deficit, subsidence, dry-day frequency, and a decrease in precipitation, humidity, and evaporation, plus a delay in the onset of the wet season, inducing a higher risk of fire during the dry-to-wet transition season. These findings provide observational evidence of the increasing climatic pressure in this area, which is sensitive for global food security, and the need to reconcile agricultural expansion and protection of natural tropical biomes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increased climate pressure on the agricultural frontier in the Eastern Amazonia–Cerrado transition zone

Marengo

Jiménez

Espinoza

et al. 2022

Sci Rep

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“…Untuk mendukung peningkatan hasil produksi pada sektor pertanian, pada aras makro didukung oleh kebijakan pemerintah sedangkan pada aras mikro yaitu petani melakukan ekspansi dibidang ini. Ekspansi pertanian ini juga dipengaruhi oleh akses ke pasar, modal manusia, penguasaan lahan (Bragança 2018). Disisi lain, ekspansi terjadi akibat petani terhubung dengan pasar ekspor dengan model produksi berbasis pasar ekspor (Pacheco 2006).…”

Section: Pendahuluanunclassified

‘From Rubber to Oil Palm’: Livelihood Structural Transformation of Local and Transmigrant Farmer Households in Minangkabau

Wati¹,

Dharmawan²,

Damanhuri³

et al. 2019

Sodality

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This study aims to analyze the transformation of livelihood structures in local and transmigrant farmer households that occur due to the entry of oil palm. Oil palm has become a new agricultural commodity that it is believed to provide better income for farmers. This research was conducted with a quantitative and qualitative approach. Quantitative data collection was carried out through a survey of 63 farm households. Meanwhile, qualitative data collection was carried out through in-depth interviews. The results of the study indicate that the transformation of rubber commodities to oil palm in general supports the economy of farmer households, which are income increases, livelihood diversity, and welfare increases. In addition, the transformation also has an impact on consumptive and materialistic lifestyle changes in farm households and the formation of farmer household typologies based on post-transformation livelihoods.

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“…It is important to highlight that the forest areas, related to Rio Preto Environmental Protection Area, despite having smaller burned areas, are highly influenced by human occupation, with high deforestation and conversion of these areas into agriculture and pasture. In the Jalapão region, the conversion of natural vegetation areas into agriculture is recent, being the last great agricultural frontier of Cerrado [73]. While the savanna areas, especially those in Serra Geral do Tocantins Ecological Station and Nascentes do Rio Parnaíba National Park, are the ones with the largest burned area, due to greater connectivity of vegetation and use of fire by traditional communities for "golden grass" cultivation [45,46].…”

Section: Spatial Patterns Of Fire Recurrencementioning

confidence: 99%

Fire Recurrence and Normalized Difference Vegetation Index (NDVI) Dynamics in Brazilian Savanna

Santana

2018

Fire

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Fire is one of the main modeling agents of savanna ecosystems, affecting their distribution, physiognomy and species diversity. Changes in the natural fire regime on savannas cause disturbances in the structural characteristics of vegetation. Theses disturbances can be effectively monitored by time series of remote sensing data in different terrestrial ecosystems such as savannas. This study used trend analysis in NDVI (Normalized Difference Vegetation Index)-MODIS (Moderate Resolution Imaging Spectroradiometer) time series to evaluate the influence of different fire recurrences on vegetation phenology of the Brazilian savanna in the period from 2001 to 2016. The trend analysis indicated several factors responsible for changes in vegetation: (a) The absence of fire in savanna phytophysiognomies causes a constant increase in MODIS-NDVI, ranging from 0.001 to 0.002 per year, the moderate presence of fire in these areas does not cause significant changes, while the high recurrence results in decreases of MODIS-NDVI, ranging from −0.002 to −0.008 per year; (b) Forest areas showed a high decrease in NDVI, reaching up to −0.009 MODIS-NDVI per year, but not related to fire recurrence, indicating the high degradation of these phytophysiognomies; (c) Changes in vegetation are highly connected to the protection status of the area, such as areas of integral protection or sustainable use, and consequently their conservation status. Areas with greater vegetation conservation had more than 70% of positive changes in pixels with significant tendencies. Absence or presence of fire are the main agents of vegetation change in areas with lower anthropic influence. These results reinforce the need for a suitable fire management policy for the different types of Cerrado phytophysiognomies, in addition to highlighting the efficiency of remote sensing time series for evaluation of vegetation phenology.

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The Causes and Consequences of Agricultural Expansion in Matopiba

Cited by 20 publications

References 0 publications

Increased climate pressure on the agricultural frontier in the Eastern Amazonia–Cerrado transition zone

Increased climate pressure on the agricultural frontier in the Eastern Amazonia–Cerrado transition zone

‘From Rubber to Oil Palm’: Livelihood Structural Transformation of Local and Transmigrant Farmer Households in Minangkabau

Fire Recurrence and Normalized Difference Vegetation Index (NDVI) Dynamics in Brazilian Savanna

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