IESA - Artigos publicados em periódicos

URI Permanente para esta coleçãohttp://200.137.215.59//handle/ri/1395

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Produção de comida: a CSA artigo quinto enquanto movimento de (Re)existência ao agrohidronegócio
(Universidade Federal de Goiás, 2025-04-20) Mendonça, Marcelo Rodrigues; Soares, Bárbara Victória da Silva
El artículo presenta la Comunidade que Sustenta a Agricultura (CSA) Artigo Quinto en Palmeiras de Goiás/GO como un movimiento de (Re)Existencia, concebido a partir de las actividades productivas y de comercialización que garantizan la producción de alimentos por campesinos asentados por la reforma agraria. La producción de alimentos de la CSA Artigo Quinto es relevante para la soberanía alimentaria e incorpora habilidades y conocimientos, prácticas socioculturales que espacializan nuevas territorialidades contrahegemónicas, en territorios hegemonizados por el agrohidronegocio. A través de una investigación cualitativa y cuantitativa, se realizaron búsquedas bibliográficas, trabajo de campo, observaciones y anotaciones sobre las acciones construidas por los pobladores en el CSA. En las últimas décadas, la modernización territorial hizo que las prácticas tradicionales se perdieran en medio del avance de las corporaciones capitalistas, bajo la mirada complaciente del Estado y, muchas veces, con abundantes recursos públicos. Finalmente, se observaron las prácticas entendidas como movimiento de (Re)Existencia que posibilitan la preservación ambiental, la nutrición alimentaria, la producción y comercialización de alimentos en circuitos cortos, asegurando trabajo, renta y la reproducción de la vida campesina.
Variabilidade, tendências e eventos extremos de precipitação em Goiânia - GO
(Universidade Federal de Goiás, 2025-04-20) Nascimento, Diego Tarley Ferreira; Oliveira, Hernane Fernandes Sousa de
Although Goiânia is a relatively young and medium-sized city, it has faced recurring problems caused by both excess and scarcity of rainfall. Considering the widespread, accelerated, and historically unprecedented climate change, this study analyzed the variability, trends, and occurrence of extreme rainfall events in Goiânia between 1961 and 2023. By using daily and monthly data compiled from the National Meteorological Institute’s conventional station, this study investigated the behavior of annual, seasonal, and monthly rainfall variability and evaluated trends and the occurrence of extreme events based on statistical indices. The data points to a usual concentration of rainfall in seven months and an inherent annual and seasonal variability in rainfall, which is altered from time to time in exceptionally dry or rainy years. There is also the possibility of a greater occurrence of extreme daily events and an increase in the period of drought, leading to recurring problems for the population.
Desafios e possibilidades de aplicação da cartografia social enquanto linguagem nos cursos de geografia
(Universidade Federal de Goiás, 2025-12-09) Souza, Lorena Francisco de; Freitas, Winicius Alves de
Este artículo tiene como objetivo discutir el uso de la Cartografía Social en los planes de enseñanza de Cartografía en los cursos de licenciatura en Geografía en las instituciones de educación superior brasileñas. A partir de los datos producidos por la investigación colectiva del Grupo de Estudios e Investigaciones de Cartografía para Escolares (GECE), mediante entrevistas con docentes, observamos pocas inclusiones de la Cartografía Social. En este sentido, buscamos comprender las principales dificultadespara el debate sobre la cartografía social como lenguaje en la formación inicial de profesores en las instituciones de educación superior de Brasil. Las preguntas dirigidas a los docentes versaron sobre la percepción de las perspectivas cartográficas no euclidianas en la formación del profesor de Geografía y en qué contexto se evidencian en sus clases.
A disciplina cartografia escolar nos cursos de formação de professores em geografia no Brasil: contexto, desafios e perspectivas
(Universidade Federal de Goiás, 2025-12-08) Richter, Denis; Moraes, Loçandra Borges de; Bueno, Míriam Aparecida
The article presents the results of a collective research project developed by the Grupo de Estudos e Pesquisas em Cartografia Escolar (GECE), entitled “The School Cartography Course in Geography Programs in Brazil and Chile: An Analysis of Teacher Education.” The aim of this text is to understand how School Cartography has been organized and developed, specifically within Geography teacher education programs in Brazil. The investigation adopts a qualitative approach, grounded in collaborative research, and uses as data production instruments the analysis of course syllabi, interviews with instructors, and the implementation of an extension course structured in three thematic modules: Social Cartography, Inclusive Cartography, and Geotechnologies applied to the teaching of Geography. The results highlight the growing presence of the discipline in curricula, although marked by regional and theoretical–methodological asymmetries, as well as the need to strengthen the integration between theory, practice, and formative experiences. The interviews show that instructors recognize School Cartography as an essential component for the development of spatial and geographical thinking, while also pointing to the persistence of structural and pedagogical challenges. The activities carried out in the extension course demonstrated the potential of contextualized and collaborative learning as a strategy for didactic experimentation. It is concluded that School Cartography is consolidating itself as a strategic formative field in Geography teacher education, whose expansion depends on consistent curricular guidelines and on the articulation between teaching, research, and extension.
Ecoturismo e agropecuária no cerrado goiano: potencialidades, desafios e contradições no município de Caiapônia (GO)
(Universidade Federal de Goiás, 2025-08-20) Barros, Juliana Ramalho; Sales, Ana Luisa Lopes; Aguiar Junior, Paulo Roberto Ferreira de
This article analyzes the interactions between ecotourism and agriculture in the municipality of Caiapônia (GO), located in the Cerrado biome, with a focus on the tensions between environmental conservation and the economic use of the territory. Based on a qualitative approach and a case study methodology, the research combines bibliographic review, document analysis, cartographic production, and field observations. The study addresses the challenges of transforming natural potential into a sustainable tourism product, highlighting the lack of planning, the informality of tourism practices, and the expansion of agribusiness as limiting factors. The analysis reveals contradictions between the discourse of sustainability and practical reality, emphasizing the importance of public policies, community participation, and adequate infrastructure for strengthening ecotourism as an alternative for territorial development.
Fronteira Brasil-Guiana Francesa: interações espaciais, cidades gêmeas e exploração petrolífera
(Universidade Federal de Goiás, 2025-10-11) Carneiro Filho, Camilo Pereira; Leal, Laura Beatriz Silva
Between moments of approximation and separation, over time, the Brazil-French Guiana border and its security and defense functions began to coexist with others such as integration and cooperation. However, the period of the COVID-19 pandemic (March 11, 2020 to May 5, 2023) highlighted several obstacles in the relationship between Brasília and Paris, which involve the completion of the BR-156 highway, the regularization of traffic across the Franco-Brazilian Binational Bridge, among other points. Thus, the present articlepresents an analysis of the spatial interactions on the border between Brazil (Amapá) and France (French Guiana), contemplating the consolidation of the border, the dynamics of the twin cities and the expectation ofoil exploration on the north coast of Oiapoque. In terms of methodology, this paper constitutes a qualitative research, based on bibliographic analysis, from the perspective of Geopolitics and Political Geography, enriched with fieldwork and thematic cartography.
Global 30-m annual median vegetation height maps (2000–2022) based on ICESat-2 data and Machine Learning
(2025) Hunter, Maria O'Healy; Parente, Leandro Leal; Yu-feng, Ho; Bonannella, Carmelo; Ferreira Junior, Laerte Guimarães; Morton, Douglas Christopher; Consoli, Davide; Sloat, Lindsey
Accounting for alternation in temporal quality analysis in MapBiomas Brazil
(2025) Silva, Ana Paula Matos e; Hunter, Maria O'Healy; Pontius Jr., Robert Gilmore; Baumann, Luis Rodrigo Fernandes; Parente, Leandro Leal; Ferreira Junior, Laerte Guimarães
Land use and land cover maps are an important resource for understanding interactions between humans and their environment across space and time with current mapping efforts often spanning upwards of 20 years. We present here a new method for a robust assessment of land cover transitions over time and apply this methodology to the yearly MapBiomas land use land cover maps of Brazil spanning 1985–2022. Based on a reference sample of 85,152 points, we find MapBiomas to have limited accuracy as an indicator of yearly land use change, but consistent over the full mapping period. Alternation, a newly defined error component, captures the number of land use transitions a location experiences throughout time. It is the primary reason for differences in estimates of annual change and is 4.6 times more frequent in the MapBiomas product than reference data. Differences in alternations are particularly prevalent in transitions from pasture to savanna and forest classes. The total land use changes detected over the 37 year study period are consistent between the reference data and the MapBiomas classification with 232 million hectares and 252 million hectares, or 27% and 29% of the Brazilian territory respectively.
Light use efficiency (LUE) based bimonthly gross primary productivity (GPP) for global grasslands at 30 m spatial resolution (2000–2022)
(2025) Isik, Mustafa Serkan; Parente, Leandro Leal; Consoli, Davide; Sloat, Lindsey; Mesquita, Vinicius Vieira; Ferreira Junior, Laerte Guimarães; Sabbatini, Simone; Stanimirova, Radost; Teles, Nathália Monteiro; Robinson, Nathaniel; Costa Junior, Ciniro; Hengl, Tomislav
The article describes production of a high spatial resolution (30 m) bimonthly light use efficiency (LUE) based gross primary productivity (GPP) data set representing grasslands for the period 2000 to 2022. The data set is based on using reconstructed global complete consistent bimonthly Landsat archive (400TB of data), combined with 1 km MOD11A1 temperature data and 1 CERES Photosynthetically Active Radiation (PAR). First, the LUE model was implemented by taking the biome-specific productivity factor (maximum LUE parameter) as a global constant, producing a global bimonthly (uncalibrated) productivity data for the complete land mask. Second, the GPP 30 m bimonthly maps were derived for the global grassland annual predictions and calibrating the values based on the maximum LUE factor of 0.86 gCm−2d−1MJ−1. The results of validation of the produced GPP estimates based on 527 eddy covariance flux towers show an R-square between 0.48–0.71 and root mean square error (RMSE) below ~2.3 gCm−2d−1 for all land cover classes. Using a total of 92 flux towers located in grasslands, the validation of the GPP product calibrated for the grassland biome revealed an R-square between 0.51–0.70 and an RMSE smaller than ~2 gCm−2d−1. The final time-series of maps (uncalibrated and grassland GPP) are available as bimonthly (daily estimates in units of gCm−2d−1) and annual (daily average accumulated by 365 days in units of gCm−2yr−1) in Cloud-Optimized GeoTIFF (~23TB in size) as open data (CC-BY license). The recommended uses of data include: trend analysis e.g., to determine where are the largest losses in GPP and which could be an indicator of potential land degradation, crop yield mapping and for modeling GHG fluxes at finer spatial resolution. Produced maps are available via SpatioTemporal Asset Catalog (http://stac. openlandmap.org) and Google Earth Engine.
Seismic facies analysis using chirp sub-bottom profile data from large sandy-bed rivers, lower São Francisco River, Northeast Brazil
(2025) Santos, Landerlei Almeida; Latrubesse, Edgardo Manuel; Feng, Zhou
A chirp sub-bottom profiler (SBP) system (shallow high-resolution seismic) was used to characterize the internal architecture of submerged bedforms and fluvial bars of the lower São Francisco River, Northeast Brazil. From upstream to downstream, the area was subdivided into two geomorphic channel reaches: anabranching-braided; and anabranching-stable. The uppermost sedimentary layers of the riverbed were analysed. A processing flow (bandpass filtering, automatic gain control, time-varying gain and stacking) to attenuate the effect of noise, equalize the gain and highlight the internal structures that were not clear in the primary recorded SBP section (envelope mode) was applied. Detailed seismic analysis and description of the SBP seismic profiles allow the interpretation of seven seismic facies. An idealized stage of development for each channel landform is based on the seismic characteristics of the sandy sets of the anabranching-braided reach. In the anabranching-stable islands reach, the bedforms have a low degree of preservation. Our result demonstrates that the SBP chirp data is a potential tool that allows the identification and definition of sedimentary facies in large sandy-bed rivers.
Jovens escolares e suas práticas espaciais em cidades pequenas: potencialidades para ensinar e aprender geografia
(2025) Ferreira, Afonso Vieira; Cavalcanti, Lana de Souza
Comprender el mundo de relaciones que los jóvenes escolares establecen con sus iguales y con los espacios cotidianos donde desarrollan sus más diversas prácticas espaciales urbanas es una tarea compleja que implica múltiples aspectos. La complejidad de este proceso se intensifica al examinar la relación entre las espacialidades juveniles en las pequeñas ciudades de Brasil y la enseñanza de la geografía. Desde esta perspectiva, este trabajo pretende presentar aspectos teóricos, conceptuales y empíricos de la relación entre la enseñanza de la geografía y las prácticas espaciales de los jóvenes escolares de pequeñas ciudades. La metodología adoptada para producir datos empíricos se basa en la investigación cualitativa, mediante cuestionarios aplicados a alumnos de primer año de enseñanza media de escuelas públicas de pequeñas ciudades del estado de Tocantins. Los resultados indican que las prácticas espaciales urbanas en este contexto son limitadas, lo que requiere esfuerzos específicos para aprovechar el potencial de la enseñanza de la geografía para la educación ciudadana.
Optimizing nitrogen estimates in common bean canopies throughout key growth stages via spectral and textural data from unmanned aerial vehicle multispectral imagery
(2025) Silva, Diogo Castilho; Madari, Beata Emoke; Carvalho, Maria da Conceição Santana; Ferreira, Manuel Eduardo
Leaf nitrogen assessment is crucial for optimizing crop management, driving remote sensing use. This study demonstrates the effectiveness of unmanned aerial vehicles (UAVs) multispectral imagery for enhancing leaf nitrogen content estimation in common bean (Phaseolus vulgaris L.) through the integration of vegetation indices (VIs) and texture features. Research conducted over two years (2021–2022) evaluated various nitrogen rates across critical growth stages (V4, R5, and R7). Machine learning models combining spectral and textural information significantly outperformed single-index approaches, achieving root mean square error (RMSE) values of 1.80 g kg−1 (relative root mean square error – RRMSE = 2.93 %) at V4 stage using support vector machine with VIs, and 2.79 g kg−1 (RRMSE = 5.20 %) at R5 stage using random forest with VIs. For later growth stages (R7) and across the entire season (all growth stages), the combination of VIs and texture metrics proved most effective, with random forest achieving RMSE values of 3.42 and 3.96 g kg−1 (RRMSE = 7.40 and 7.32 %), respectively. Texture analysis in across-row directions (90° and 135°) provided superior performance compared to traditional diagonal approaches for row-planted crops. Linear regression analysis showed that normalized difference texture indices incorporating correlation and homogeneity explained up to 71 % of leaf nitrogen content variability at R7 stage. The optimal nitrogen rate of 91 kg ha−1, validated through both yield response and leaf nitrogen measurements, provides a robust benchmark for nitrogen management in common bean production. This methodology offers a practical framework for real-time, site-specific nitrogen management that improves upon current recommendation systems.
Compreender as juventudes: tarefa importante e necessária para realizar o ensino de Geografia com sucesso
(2025) Cavalcanti, Lana de Souza
The text brings together fundamental aspects for understanding young students in different current contexts, with the aim of contributing to the daily practice of Geography teachers. In the initial part, the text addresses the concept of youth, using previously systematized references as support. Next, a conception of Geography teaching is presented with a view to developing geographic thinking, from a critical perspective. The text continues with elements of the methodological orientation in this perspective, as well as the expectations of young people with school and Geography classes, evidenced in research with schoolchildren, and which influence learning practices. Finally, an understanding of the relationship between youth, geographic learning and daily life is summarized.
Contributions of water resources charges on the Paranaíba river
(2025) Pasqualetto, Antonio; Faria, Karla Maria Silva de; Muro Júnior , Aldo; Mendes, Thiago Augusto
Population growth and demand for water require managers to ensure its availability and quality. Among the instruments defined by law no. 9,433/1997, the charge for water stands out. Thus, the objective was to evaluate the evolution of charges for the use of water resources in Brazil, with emphasis on the Paranaíba river basin. The methodology was based on two phases, one of reviewing articles available in Capes journals and the other of consulting spreadsheets from the Araguari River Basin Agency on charging for the use of water under the Union's jurisdiction in the Paranaíba river basin. The results showed that charging for the use of water resources constitutes a relevant instrument for disciplining and attracting financial resources that will allow improvements in the planning and management of water use. It is noteworthy that irrigation appears as the main user of the flow captured in the Paranaíba river. However, the main source of resources for collection comes from public supply. Among the Federation Units, the Federal District proved to be the largest contributor in the Paranaíba river basin.
Implicações das transformações no uso e cobertura da terra na gestão hídrica da bacia hidrografica do rio Araguaia
(2025) Assis, Pâmela Camila; Silva, Ana Paula Matos e; Faria, Karla Maria Silva de; Bayer, Maximiliano
This study investigates transformations in land use and cover in the Araguaia River basin between 1985 and 2022, highlighting the pressures resulting from agricultural expansion on the sub-basins. Using data from MapBiomas, the study offers a detailed analysis of environmental changes over nearly four decades, reflecting the intensification of human activities such as agriculture, livestock, and urbanization. The analysis revealed a significant reduction in natural vegetation cover, with a 44.21% decrease in Forest Formation, 41.53% in Savanna Formation, and 34.74% in Grassland Formation. These transformations demonstrate a shift towards intensified agriculture, with a significant increase in soybean cultivation and other temporary crops in previously uncultivated areas. The Rio das Mortes sub-basin stands out among the other sub-basins for having the highest rate of area conversion. Even after 26 years since the enactment of the Water Law, the Araguaia River basin still lacks committees which cover its entire territory. There are currently only seven basin committees, covering only 39.47% of the basin’s total area. There are 23 among the 40 sub-basins which still do not have an established basin committee. This gap in water resource management underscores theurgent need for effective public policies for the conservation and sustainable use of the river basin.
Conteúdos de astronomia presentes no componente curricular geografia na base nacional comum curricular (BNCC) e na formação docente no Instituto de Estudos Socioambientais (IESA) da Universidade Federal de Goiás (UFG)
(2025) Meneguelli, Juliana Faria; Barros, Juliana Ramalho
This article aims to identify the connections between the Astronomy contents present in the Geography Component in Brazil’s Common Core State Standards (BNCC) and teacher training at the Institute of Socio-Environmental Studies (IESA) of the Federal University of Goiás (UFG). The methodological procedures adopted in this article are based on qualitative research and the construction of tables that list the contents and skills that interface between Astronomy and Geography. The theoretical discussion revolves around the possible connections between the knowledge of astronomy and geography as outlined in the official documents analyzed such as Brazil’s Common Core State Standards (BNCC) and the Reference Curriculum of the State Education Network of Goiás. There is also a concern about teacher training in Geography at UFG. Thus, we list the disciplines that interface together knowledge of astronomy and geography.
Balanço hídrico climatológico e classificação climática de köppen e thornthwaite para o município de Araguaína, Tocantins
(2025) Pereira, Marcelo Divino Ribeiro; Cabral, João Batista Pereira; Silva, Ezequiel Pereira da; Lopes, Regina Maria
The dynamics of climatic elements, with emphasis on temperature and precipitation, are fundamental for studies on the Climate Classification Systems (CCS) of a region, as well as for determining the Climatological Water Balance (BHC). Thus, the objective of the work was to determine the Climatological Water Balance and the climatic classification for the municipality of Araguaína (TO), basedon the methodological proposals of Köppen and Thornthwaite. In this case, a historical series referring to the years 1991 to 2020 was used. As a result, there is 1761.9 mm of accumulated annual precipitation and a Potential Evapotranspiration (ETP) in theorder of 1425.36 mm; the average monthly temperature of the municipality over 29 years was 25.4 ºC.The Water Surplus (WSR) found was 638.19 mm, while the Water Deficit (WDE), represented by the months of May, June, July, August, September and October, was around 301.65 mm for the years analyzed. Regarding the climate of the municipality, according to the Köppen proposal, it is of the Aw type, tropical with a dry season in winter; for Thornthwaite, the climate is classified as B2 -w-A’-a’, therefore, humid, with Moderate Deficiency in Winter, Megathermal with climatic subtype a’.
Movimentos curriculares de Geografia no contexto do ensino médio
(2025) Souza, Vanilton Camilo de; Silva, Leildo Dias; Pereira, Ana Beatriz Duarte; Silva, Gabriel de Miranda Soares
Los planes de estudios destinados a la formación de los jóvenes son ciertamente un tema que suscita amplios debates y disputas. A exemplo es la reforma de la educación secundaria. Esta investigación tiene como objetivo comprender cómo se presentan los conocimientos geográfi cos en los documentos curriculares para la educación secundaria en las redes educativas de Goiás, Mato Grosso y Pará y las reacciones de entidades y asociaciones en el contexto de las reformas emprendidas para este nivel de educación. La metodología es cualitativa con énfasis en el análisis documental. Los resultados muestran que la Geografía en los documentos curriculares de Goiás y Mato Grosso se diluyó en las ciencias humanas y sociales aplicadas. En el documento curricular de Pará hay un esfuerzo por construir un documento crítico y la Geografía todavía tiene un lugar en él. En este movimiento, las intuiciones y entidades de clase se posicionan contra la reforma, demostrando que profundizará las desigualdades sociales. Concluimos que la ley de reforma de la educación secundaria se presenta como un retroceso para la enseñanza de la Geografía.
Hollywood no Cerrado e o devir do espaço: sobrevivência, imagem e narrativa
(2025) Silva, Valéria Cristina Pereira da; Silva, Alberto da
From theoretical approach about Didi-Huberman’s surviving image concept, we are searching uncovered the surviving way and the image power over the space present at reviewed documentary show a history about important Hollywood’s artists went live at Anápolis – a little town in the Brazilian highland where this group comes, in your own way, doing a space transforming. The documentary brings a value of memory that collaborates with Anápolis’ identity.
Five decades of morphological evolution and hydro-sedimentary interactions in a fluvial confluence in the Brazilian Cerrado
(2025) Assis, Pâmela Camila; Zancopé, Márcio Henrique de Campos; Siqueira, Luan Ferreira; Macedo, Hudson de Azevedo; Bayer, Maximiliano
River confluences are zones of intense hydro-sedimentary interaction whose morphological dynamics remain poorly understood in tropical environments, especially in the Cerrado biome. This study investigates the morphodynamic transformations at theconfluence of the Araguaia and Vermelho Rivers in Aruanã (Goiás, Brazil), over 51 years (1972–2023). The studyintegrates remote sensing data, bathymetry, and acoustic profiling. Riverbanks, thalwegs, sandbars, junction angle, and channel width were mapped, along with the calculation of hydraulic and geomorphological parameters. The results reveal high planimetricmobility, with junction displacement of up to 2.5 km, a 27° reduction in the confluence angle, and intense fluctuations in the configuration and area of fluvial bars. The confluence was characterized by a retreat between the 1970s and 2000 due to the erosion of part of the floodplain; then an advance of the confluence was observedin the period from 2000 to 2023, driven by formation and consolidation of the tributary bar. The dominance of the Araguaia River influences the scour zone position and thalwegconfiguration. Differential bank erosion was observed, conditioned by the morpho-sedimentary units of the floodplain, as well as colonization of the tributary bar by vegetation, promoting temporary stabilization. It isconcluded that the adjustments in theconfluence morphology result from aninteraction between the seasonal hydro-sedimentary regime, bank lithology, and migration of fluvial forms, highlighting a dynamic system that is sensitive to changes in land use and land cover.

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