The structure of an earth-mound field of the Brazilian Savanna

Sales, Jepherson Correia; Bueno, Guilherme Taitson; Rosolen, Vânia; Ferreira, Manuel Eduardo; Furlan, Lucas Moreira

doi:10.1016/j.geomorph.2021.107752

Cited by 5 publications

(7 citation statements)

References 35 publications

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“…Validating methodology in rocky slopes with different discontinuity characteristics [138][139][140][141][142][143][144][145] Mapping glacial-related landforms…”

Section: N/a [135]mentioning

confidence: 99%

The Role of UAS–GIS in Digital Era Governance. A Systematic Literature Review

et al. 2021

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UAS (Unmanned Aircraft Systems) technologies, also known as UAV (Unmanned Aerial Vehicle), drones, or Remotely Piloted Aircraft System (RPAS) and GIS (Geographic Information System) are recognised for the value of the results that can be achieved by their combined use. However, their use and the results achieved are rarely framed within the context of Digital Era Governance (DEG), an undertaking that would significantly reduce the capabilities of knowledge transfer from the academic and/or private environment to the public domain. The purpose of this study was to highlight, by a bibliometric analysis, the areas of proposed use of this team of tools and the extent to which these can enter the sphere of interest of public administrations, especially local ones. From a methodological point of view, based on the 439 articles filtered from the Web of Science database where UAS/UAV and GIS technologies were used, several bibliometric analyses have emerged. VOSviewer and R (Bibliometrix tool) were used to conduct the bibliometric analyses. Most scientific publications that used UAV technology as a working tool have predominant applicability in photogrammetry, while GIS applications are found in publications dedicated to image processing, landslides, and cultural and archaeological heritage. We point out that from the point of view of international cooperation, at the level of institutions or countries, certain international organisations from the USA, China, and the central and northern European states have a high interest in this topic, and a low cooperation between academia and public administration is exhibited. The conclusion is represented by the apparent lack of framing of the results of UAS–GIS technologies usage into wider and more topical contexts, such as digital era governance, and also a reduced applicability of the research results.

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“…Validating methodology in rocky slopes with different discontinuity characteristics [138][139][140][141][142][143][144][145] Mapping glacial-related landforms…”

Section: N/a [135]mentioning

confidence: 99%

The Role of UAS–GIS in Digital Era Governance. A Systematic Literature Review

et al. 2021

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“…Murundus (earth-mound) fields, also known as covoais, are peculiar microreliefs (sets of metricscale earth mounds), commonly located in areas of flattened surfaces in the Cerrado. They are sets of semicircular elevations that protrude from the surface of the land, rounded or oval, with average dimensions of 70 cm in height and 6 m in diameter (SALES et al, 2019). Murundus fields have woody vegetation (herbaceous, shrubby, and arboreal), while the space between the murundus fields commonly has hygrophilous field vegetation (DARLINGTON, 1985;ARAÚJO NETO et al, 1986).…”

Section: Introductionmentioning

confidence: 99%

“…Works on a regional scale, which investigate a large number of occurrences of murundus fields, are rare. In addition, studies usually focus on a specific aspect of murundus fields, such as their phytosociology (OLIVEIRA FILHO, 1992;RESENDE et al, 2004), the morphometry of their relief (SILVA et al, 2020;SALES et al, 2021), their soils (SCHNEIDER; SILVA, 1991;MARTINS;ROSOLEN, 2014).…”

Section: Introductionmentioning

confidence: 99%

Natural Determinants of the Earth-Mound Fields Distribution in the Southwest of the State of Goiás

Malheiro,

Boeira,

Bueno

et al. 2023

Sociedade &Amp; Natureza

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Murundusfields, also known as covoais,are frequent microreliefs in the Cerrado. These are sets of semicircular elevations that protrude from the surface of the land, rounded or oval, with average dimensions of 70 cm in height and 6 m in diameter. The determinants of its regional spatial distribution are still poorly known. This study aimed to identify the natural determinants of its spatial distribution in the Southwest of Goiás, in the Sedimentary Basin of Paraná. All occurrences of murundusfields identified by the project Mapping of Remnant MurundusFields in the state of Goiás (SEMAD-GO/LAPIG-UFG) were compared with information referring to lithology, geomorphology,NDWI (Normalized Difference Water Index), and SMI (Soil Moisture Index). The indices were obtained from SENTINEL 2-A (MSI) and Landsat 8 (OLI and TIRS) orbital images. It was found that murundusfields preferentially occur in the Alluvial Deposits, Cachoeirinha, Detritic-lateritic Covers, and Serra Geral geological units. Murundusfields predominate under slopes of 0 to 8% (flat to gently undulating relief), and in areas with lower drainage density. The NDWI and the SMI indicated that murundusfields are concentrated on wet surfaces, occurring less frequently in saturated/very wet areas and in moderate humidity, dry, and very dry surfaces.

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“…Os campos de murundus, também conhecidos como covoais, constituem microrrelevos peculiares (conjuntos de montes de terra de escala métrica), comumente localizados em áreas de superfícies aplanadas do Cerrado. Trata-se conjuntos de elevações semicirculares que sobressaem da superfície do terreno, arredondadas ou ovais, com dimensões médias de 70 cm de altura e 6 m de diâmetro (SALES et al, 2019). Os murundus apresentam vegetação lenhosa (herbácea, arbustiva e arbórea), enquanto o espaço inter-murundus apresenta comumente vegetação campestre higrófila (DARLINGTON, 1985;ARAÚJO NETO et al, 1986).…”

Section: Introductionunclassified

“…São raros os trabalhos em escala regional, que investigam um grande número de ocorrências de campos de murundus. Além disso, geralmente os trabalhos têm como foco um aspecto específico dos campos de murundus, como sua fitossociologia (ex: OLIVEIRA FILHO, 1992;RESENDE et al, 2004), a morfometria de seu relevo (ex: SILVA et al, 2020;SALES et al, 2021), seus solos (ex: SCHNEIDER; SILVA, 1991;MARTINS;ROSOLEN, 2014).…”

Section: Introductionunclassified

Condicionantes Naturais da Distribuição Espacial dos Campos de Murundus no Sudoeste do Estado de Goiás

Malheiro,

Boeira,

Bueno

et al. 2023

S&N

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Os campos de murundus, também conhecidos como covoais, são microrrelevos frequentes no Cerrado. Trata-se conjuntos de elevações semicirculares que sobressaem da superfície do terreno, arredondadas ou ovais, com dimensões médias de 70 cm de altura e 6 m de diâmetro. Encontram-se associados a áreas úmidas e vêm sendo impactados pela expansão agropecuária. Os condicionantes de sua distribuição espacial regional são ainda pouco conhecidos. O objetivo deste trabalho foi identificar fatores naturais condicionantes de sua distribuição espacial no SO de Goiás, na Bacia Sedimentar do Paraná. Todas as ocorrências de campos de murundus identificadas pelo projeto Mapeamento dos Remanescentes de Campos de Murundus no Estado de Goiás (SEMAD-GO/LAPIG-UFG) foram comparadas com informações referentes à litologia, à geomorfologia, ao NDWI (Índice de Diferença Normalizada da Água) e ao SMI (Índice de Umidade do Solo). Os índices foram obtidos por imagens orbitais SENTINEL 2-A (MSI) e Landsat 8 (OLI e TIRS). Constatou-se que os campos de murundus ocorrem preferencialmente nas unidades Depósitos Aluvionares, Cachoeirinha, Coberturas Detrito-Lateríticas e Serra Geral. Predominam sob declividades de 0 a 8%, (relevo plano a suave ondulado) e nas áreas de menor densidade de drenagem. O NDWI e o SMI indicaram que os campos de murundus se concentram em superfícies úmidas, ocorrendo com menor frequência em áreas saturadas/muito úmidas e em áreas de umidade moderada, secas e muito secas.

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The structure of an earth-mound field of the Brazilian Savanna

Cited by 5 publications

References 35 publications

The Role of UAS–GIS in Digital Era Governance. A Systematic Literature Review

The Role of UAS–GIS in Digital Era Governance. A Systematic Literature Review

Natural Determinants of the Earth-Mound Fields Distribution in the Southwest of the State of Goiás

Condicionantes Naturais da Distribuição Espacial dos Campos de Murundus no Sudoeste do Estado de Goiás

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