Deterioração físico-conservacionista da microbacia hidrográfica do riacho Paus Brancos, Campina Grande, PB

Baracuhy, José G. de V.; Kurtz, Silvia Margareti de Juli Morais; Kurtz, Fábio Charão; Duarte, Simone Mirtes Araújo; Lima, Vera Lúcia Antunes de; Rocha, José Sales Mariano da; Neto, José Dantas

doi:10.1590/s1415-43662003000100026

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…The Rc for the CRSB was 0.54, which makes the area suitable for farming. The same pattern was observed by Baracuhy et al (2003), who found that mini basins, for the most part, are apt for agricultural use. However, field visits are necessary before strongly recommending the region for agricultural development, since the provided value is an average for the entire area and does not reflect local variation.…”

Section: Resultssupporting

confidence: 80%

Physical parameters of the cachimbal river sub-basin associated to landscape change in Pinheiral-RJ, Brazil

Gaia-Gomes¹,

Pereira²,

Santos³

et al. 2018

Biosci. J.

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ABSTRACT:The objective of this study was to characterize the physical parameters of the Cachimbal River Watershed, located in Pinheiral, Rio de Janeiro State, Brazil, and to use the resulting data to identify degradation risks. To achieve this purpose, a Hydrologically Consistent Digital Elevation Model (HCDEM) was generated using contour line, river path, and area boundary data extracted from topographic maps of the cities of Volta Redonda (Page SF-23-ZAV-2) and Piraí (Page SF-23-Z-VI-1). These maps were obtained from the Brazilian Institute of Geography and Statistics, and were rendered at a scale of 1:50,000 ArcGISs version 10.5 software was used to generate the HCDEM, from which the physical parameters were extracted. Results showed that the altitude of the area ranges from 360 m to 740 m, while the slope varies heterogeneously from 6% to 28%. The sub-basin has a total area of 104.15 km², a perimeter of 63.41 km, a main channel length of 21.79 km, and a 5th-order dendritic drainage network. Other parameters include a compactness coefficient of 1.74, a form factor of 0.34, and a circularity ratio of 0.33. These values indicate that the sub-basin is not prone to floods because of its elongated shape. Meanwhile, drainage density was 2.60 km km -2 , while river density was 5.5 channels km -2 ; these parameters indicate excellent performance and high potential to generate new channels. Although the roughness coefficient indicates that the area is suitable for agricultural development, the roughness index demonstrates the need to adopt more nuanced agricultural practices that account for the particular features of the area, such as topographic variation and soil characteristics.

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Section: Resultssupporting

confidence: 80%

Physical parameters of the cachimbal river sub-basin associated to landscape change in Pinheiral-RJ, Brazil

Gaia-Gomes¹,

Pereira²,

Santos³

et al. 2018

Biosci. J.

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“…El coeficiente de rugosidad (Rn) según Baracuhy et al, (2003), se obtiene multiplicando la densidad por la pendiente media de drenaje de la cuenca y es un parámetro ambiental que dirige el uso potencial del suelo. En la interpretación del coeficiente de rugosidad se consideró la clasificación propuesta por Rocha (1997), donde los coeficientes de rugosidad se dividen en cuatro clases: A: terreno propicio para la agricultura; B: terreno propicio para el pastoreo; C: terreno propicio para el pasto y la reforestación y; D: terreno propicio sólo para la reforestación, de acuerdo con la Tab.…”

Section: Características Del Relieve De La Cuencaunclassified

Análisis morfométrico de la microcuenca “C” núcleo Cunha, São Paulo, Brasil

Cerignoni

Rodrigues²

2015

Cuad. Soc. Esp. Cienc. For.

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“…The Ruggedness Number indicates the reality of sub-basin watersheds and offers a simple, quick contribution and precise planning, for better and more just economic exploitation, according to land aptitude. Soil capability in river basins and the Ruggedness Number are equivalent in over 95% of cases [13,14]. The higher the RN value, the greater the danger of erosion and environmental degradation [15].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have demonstrated the efficiency of the RN method for determining soil capability in Brazilian watersheds [1][2][3][4][5][6][7][13][14][15] and other watersheds around the world [16][17][18][19]. However, the absence of potential land use or agricultural land suitability assessments is recurrent in territorial management plans and integrated water resources plans (IWRP).…”

Section: Introductionmentioning

confidence: 99%

Environmental Land Use Conflicts in a Macroscale River Basin: A Preliminary Study Based on the Ruggedness Number

Guidolini

Ometto

Arcoverde

et al. 2020

Water

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Inadequate land use planning is one of the main driving forces leading to the occurrence of erosion and environmental degradation. The negative impacts of poor planning influence soil physical quality and fertility, agricultural productivity, water quality and availability, biodiversity and other ecosystem services. In some areas, actual land use is not consistent with potential use. When this occurs, the area is termed as being in environmental land use conflict. Many studies have demonstrated the efficiency of the ruggedness number (RN) method for determining land use potential in watersheds. The RN method is simple and can be carried out using geographic information systems (GIS). However, the absence of potential land use or agricultural land suitability assessments is recurrent in territorial management plans or integrated water resources plans (IWRP), especially for macroscale river basins. Therefore, the aim of this preliminary study is to identify possible environmental land use conflicts at the Rio Grande Basin (BHRG), Brazil, using the Ruggedness Number. The results indicate high agricultural use potential and the predominance of appropriate or acceptable soil use at the BHRG. However, class 1, 2 and 3 environmental conflicts were identified in some Rio Grande sub-basins, suggesting greater environmental degradation risks. The findings clearly indicate that more exhaustive studies on environmental quality (soil capability, water, biodiversity) are required at the BHRG, especially in environmental land use conflict areas. We emphasize that this is an important preliminary study which may be carried out in any other macroscale hydrographic basin.

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Deterioração físico-conservacionista da microbacia hidrográfica do riacho Paus Brancos, Campina Grande, PB

Cited by 7 publications

References 5 publications

Physical parameters of the cachimbal river sub-basin associated to landscape change in Pinheiral-RJ, Brazil

Physical parameters of the cachimbal river sub-basin associated to landscape change in Pinheiral-RJ, Brazil

Análisis morfométrico de la microcuenca “C” núcleo Cunha, São Paulo, Brasil

Environmental Land Use Conflicts in a Macroscale River Basin: A Preliminary Study Based on the Ruggedness Number

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