Avaliação da susceptibilidade à degradação ambiental em um município serrano do semiárido do Brasil (Cerro Corá-RN) / Evaluation of susceptibility to environmental degradation in a mountain municipality at semi-arid region of Brazil (Cerro Corá-RN)

2018 ◽  
Vol 28 (55) ◽  
pp. 880-897
Author(s):  
Henrique Roque Dantas ◽  
Jânio Carlos Fernandes Guedes ◽  
Diógenes Félix da Silva Costa ◽  
Fernando Moreira Da Silva
Keyword(s):  
Environmental Degradation ◽  
Arid Region ◽  
Satellite Images ◽  
Census Data ◽  
Decisive Role ◽  
Rio Grande ◽  
Natural Environments ◽  
Economic Practices ◽  
Semi Arid Region ◽  
Semi Arid

Os processos de ocupação e evolução dos ambientes naturais em decorrência de um processo desordenado de implementação de práticas econômicas agrosilvopastoris, desempenham um papel determinante de degradação da paisagem do semiárido Nordestino. A Serra de Santana apresenta elementos naturais importantes para o estado do Rio Grande do Norte como a nascente do Rio Potengi.  O presente trabalho teve como objetivo analisar o grau de susceptibilidade de degradação no município de Cerro Corá - RN.  Foram utilizadas imagens de satélite Landsat-5 e dados censitários referente ao ano de 2008. Como método fez-se uso da proposta de Karmieczak e Seabra (2007) que contempla uso do solo, NDVI, precipitação, pecuária e erodibilidade na avaliação da degradação ambiental. Os resultados mostraram que em a maioria do município de Cerro Corá apresenta uma susceptibilidade de baixa a média, que juntos representam 63,92% do município. Um sistema de informação Geográfica torna-se indispensável no monitoramento ambiental de Cerro Corá/RN.Palavras-chave: LANDSAT, Indicadores de degradação ambiental, Geoprocessamento, uso do solo.AbstractThe occupation processes and evolution of natural environments due to a disorderly process of implementing agrosilvopastoris economic practices, play a decisive role in degradation of the Northeastern semi-arid landscape. The Serra de Santana presents important natural elements for the state of Rio Grande do Norte as the source of the Potengi River. The present work had as objective to analyze the degree of susceptibility of degradation in the municipality of Cerro Corá - RN. Landsat-5 satellite images were used and census data for the year 2008. As a method made use of the proposed Karmieczak and Seabra (2007) which includes land use, NDVI, precipitation, livestock and erodibility in the evaluation of environmental degradation. The results showed that in most of the municipality of Cerro Cora has a low susceptibility average, which together account for 63.92% of the municipality. A geographic information system becomes indispensable in the environmental monitoring of Cerro Corá/RNKeywords: LANDSAT, Indicators of environmental degradation, Geoprocessing, Use of Soil.

MAPEAMENTO DA COBERTURA VEGETAL DO MUNICÍPIO DE CURRAIS NOVOS-RN, BRASIL

2019 ◽  
Vol 21 (2) ◽  
pp. 293-302
Author(s):  
Maria Luiza Gomes ◽  
Alisson Medeiros de Oliveira ◽  
Diógenes Félix da Silva Costa
Keyword(s):  
Arid Region ◽  
Satellite Images ◽  
Rio Grande ◽  
Degradation Process ◽  
Anthropogenic Pressure ◽  
Future Studies ◽  
Forage Species ◽  
Semi Arid Region ◽  
Semi Arid ◽  
Soil And Water

A Caatinga é caracterizada por ser adaptada a suportar grandes períodos de seca e possuir 12 tipos de formações florísticas, sendo o bioma menos estudado e menos preservado de todo o território. O presente estudo teve objetivo realizar um mapeamento de cobertura vegetal no município de Currais Novos localizado no Semiárido do Nordeste brasileiro, (sob clima semiárido), no estado do Rio Grande do Norte. Através das análises ambientais, zoneamentos e a partir das imagens do satélite CBERS 4, foi possível identificar através de mapas temáticos onde há a existência da pressão antrópica, mostrando-se como a causa potencial do processo de degradação da caatinga no Seridó, tal fisionomia é a resposta das grandes queimadas, alta exploração de recursos lenhosos e o cultivo de algodão, o que promove a intensificação da erosão e a desertificação do solo. A classificação mais predominante foi a caatinga aberta, com uma área de prioridade elevada, uma vez que se trata de áreas alteradas por atividades antrópicas relacionadas ao cultivo de espécies forrageiras, o que pode causar contaminação do solo e da água. O presente estudo pretende servir como base para estudos futuros sobre a vegetação nas demais áreas em desertificação no país.Palavras-chave: Currais Novos, caatinga, degradação. ABSTRACTThe Caatinga is characterized for being adapted to withstand great periods of drought and to possess 12 types of floristic formations, being still the biome less studied and less preserved of the whole territory. The present study aimed to identify the different vegetation cover typologies in the municipality of Currais Novos, located in the Brazilian Northeastern Semi - arid region, in the state of Rio Grande do Norte. Through the environmental analyzes, zoning and CBERS 4 satellite images, it was possible to identify thematic maps showing the presence of anthropogenic pressure, proving to be the potential cause of the degradation process of the caatinga biome in Seridó, where it is located physiognomy is the response of large burnings, high exploitation of wood resources and the cultivation of cotton, which promotes the intensification of erosion and desertification of the soil. In view of the research, the most prevalent classification was the open caatinga, with a high priority area since it is anthropic activities related to the cultivation of forage species, which can cause contamination of soil and water. The present study intends to serve as a basis for future studies on the vegetation of areas in the process of certification in the country.Key words: Currais Novos, caatinga, degradation.

scholarly journals Group multicriteria model for allocating resources to combat drought in the Brazilian semi-arid region

Water Policy ◽  
2018 ◽  
Vol 20 (6) ◽  
pp. 1145-1160 ◽  
Author(s):  
Thomas Edson Espíndola Gonçalo ◽  
Danielle Costa Morais
Keyword(s):  
Water Scarcity ◽  
Arid Region ◽  
Rio Grande ◽  
Decision Makers ◽  
The Public ◽  
The World ◽  
Multicriteria Model ◽  
Semi Arid Region ◽  
Semi Arid ◽  
Made In

AbstractThe world is facing a growing water scarcity problem in the most diverse regions. The Rio Grande do Norte (RN), a Brazilian semi-arid region, is facing its severest drought in the last 100 years. Given this context, managing water resources and combating the effects of the drought have become even more important. Decisions made in this context may involve multiple criteria established by more than one decision-maker. To tackle this issue, a multicriteria model for group decisions is proposed in order to rank the municipalities of the region and thus guide the public administration's efforts in tackling the drought and mitigating its effects. The applicability of the model is exemplified by studying the Apodi-Mossoró river basin, for which the PROMETHEE GDSS method was selected and the preferences of three decision-makers were calculated.

scholarly journals An environmental analysis of the acaraú river basin, Brazilian northeastern region

2020 ◽  
Vol 4 (3) ◽  
pp. 117-123
Author(s):  
Vanda Claudino-Sales
Keyword(s):  
Sustainable Development ◽  
Water Resources ◽  
River Basin ◽  
Environmental Degradation ◽  
Environmental Analysis ◽  
Arid Region ◽  
Hydrographic Basin ◽  
Semi Arid Region ◽  
Regional Authorities ◽  
Semi Arid

The rivers and their watersheds are fundamental elements of socioeconomic activities. In this article, we analyze the hydrographic basin of the Acaraú River, situated in the northeast of Brazil, from its geoenvironmental aspects, based on the perspective of the geosystem. In this perspective, a geoenvironmental picture of the hydrographic basin in question is presented, as well as the environmental problems that characterize it, postulating the need to carry out this type of survey to define the basin as a fundamental planning unit. The Acaraú River basin has particular characteristics, since it is located in a poor and extremely populous semi-arid region, which results in socio-environmental stress, whose main consequence is the environmental degradation of the fluvial course. The regional authorities need to be aware of the geoenvironmental elements raised in order to reverse this framework of socio-environmental degradation of water resources and to allow territorial growth based on sustainable development.

scholarly journals Tuberculosis in bovine slaughtered in the semi-arid region of Rio Grande do Norte, Brazil

2021 ◽  
Vol 42 (5) ◽  
pp. 3047-3056
Author(s):  
Pirajá Saraiva Bezerra Neto ◽  
◽  
Flábio Ribeiro de Araújo ◽  
Taynara Nunes Pasquatti ◽  
Felício Garino Junior ◽  
...  
Keyword(s):  
Nested Pcr ◽  
Arid Region ◽  
Histopathological Examination ◽  
False Negative ◽  
Rio Grande ◽  
Standard Technique ◽  
Epidemiological Surveillance ◽  
Microbiological Culture ◽  
Semi Arid Region ◽  
Semi Arid

Between November 2017 and August 2018, in order to determine the occurrence of tuberculosis in cattle slaughtered in the semi-arid region of Rio Grande do Norte, 11,610 bovine carcasses underwent a routine post-mortem inspection. One animal presented suggestive lesions and samples from lung, spleen and heart were submitted to microbiological culture in Stonebrink medium for 90 days and molecular analysis by nested-PCR. For histopathological examination and Ziehl Neelsen staining, the omentum was used. In the cultured samples, two of them (heart and spleen) showed growth, but were not confirmed as M. bovis by conventional PCR. At nested-PCR, the samples showed amplification for the TbD1 region. The presence of numerous granulomas was detected in the histopathological examination characterized by a necrotic center and areas of mineralization, as well as the presence of acid-fast bacilli (AFB) in the Ziehl-Neelsen stain. Microbiological culture can show false negative results, despite being considered a gold standard technique, although it takes time. Nested-PCR and histopathology show fast and effective results for the diagnosis of the disease. The presence of positive animals represents a public health risk in the studied region. Therefore, one of the essential systems applied to the control of bovine tuberculosis is the epidemiological surveillance of animals in slaughterhouses.

Characterization of the deforestation effect in a semi-arid region by the use of satellite images

2004 ◽  
Author(s):  
Khatir Benhanifia ◽  
Driss Haddouche ◽  
Zakaria Smahi ◽  
Abdelkrim Bensaid ◽  
Abderrahmane Hamimed
Keyword(s):  
Arid Region ◽  
Satellite Images ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Attributes of Neosols associated with agricultural uses in the Semi-arid Region of Rio Grande do Norte, Brazil

2016 ◽  
Vol 7 (11) ◽  
pp. 184-190
Author(s):  
Sonally Jácome Cavalcante Jussiara ◽  
Cruz Portela Jeane ◽  
Bezerra de Melo Stefeson ◽  
Rangel de Souza Melo Mikhael ◽  
Reboucas Cosme Christiano ◽  
...  
Keyword(s):  
Arid Region ◽  
Rio Grande ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals ANÁLISE GEOAMBIENTAL DA BACIA HIDROGRÁFICA DO RIO ACARAÚ, CEARÁ, NORDESTE DO BRASIL

2020 ◽  
Vol 11 (38) ◽  
pp. 90-109
Author(s):  
Vanda Claudino-Sales ◽  
◽  
Ernane Cortez Lima ◽  
Simone Ferreira Diniz ◽  
◽  
...  
Keyword(s):  
Sustainable Development ◽  
Environmental Degradation ◽  
Natural Resource ◽  
Arid Region ◽  
Environmental Planning ◽  
Hydrographic Basin ◽  
Semi Arid Region ◽  
Regional Authorities ◽  
Semi Arid

This article presents a geoenvironmental picture of the hydrographic basin of the Rio Acarau (geology, geomorphology, pedology), located in the Brazilian northern Northeast, as well as the environmental problems that characterize it. The study area is located in a poor and extremely populous semi-arid region, with large environmental degradation of the river course and its plaine. It is necessary that regional authorities transform the hydrographic basin into a fundamental socio-economic and environmental planning unit, based on the surveys and geoenvironmental characterization of the area, to reverse the socioenvironmental degradation of the natural resource and allow territiorial growth based on sustainable development.

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