Tendência em séries hidrológicas e de mudanças no uso e cobertura da terra da bacia hidrográfica do rio Guanhães, Minas Gerais

Ferreira, Fernanda Laurinda Valadares; Almeida, Laura Thebit de; Teixeira, David Bruno de Sousa

doi:10.34188/bjaerv3n2-004

Cited by 4 publications

(4 citation statements)

References 18 publications

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“…The correspondence between the rise of agricultural areas and the decrease in flow, without detecting changes in behavior in the rainfall regime was also reported by Ferreira et al (2020), from 1985 to 2014, the variables were independent and point out that precipitation did not impact the flow. The impact of these changes in the water regime is also reported by Silva (2019), who pointed out the replacement of forested areas by pastures and agricultural areas change the physical-chemical composition of the soils, making it more compact, indicating that water tends to travel with more difficulty and consequently the water table is lowered.…”

Section: Correlation Analysis Between the Variables Flow Land Use And...mentioning

confidence: 55%

“…The analyzed period corresponds to the same one used for the flow data . To fill the gaps, the regional weighting method was used based on the average precipitation of neighboring stations, described in Equation 1: This method is widely disseminated in the literature, being used by several authors (França et al, 2019;Ferreira et al, 2020;Fistarol and Santos, 2020;Junqueira et al, 2020), mainly for trend statistical analysis, since short period series can signal non-stationarity, when in fact they are natural fluctuations of the analyzed hydrological series. Of the seven stations that make up the basin perimeter, four had faults: Catarinense, Casa Real, Cabeceira Grande, and Vereda Nova during 1985 to 2000.…”

Section: Rainfall Datamentioning

confidence: 99%

“…Given these facts, it is necessary to understand the impact of climate change on the hydrology, as well as evaluate trends and their magnitude in the temporal series. Many researchers have used classic trend detection models, such as the Mann-Kendall test; for correlating the magnitude of trends using the Rho Spearman test; and the Pettitt test, widely used for the analysis of abrupt changes in a hydroclimatic series (Tamagnone et al, 2019;Ferreira et al, 2020;Mirdashtvan et al, 2020;Salehi et al, 2020). These studies report urbanization, population growth, and the rise of agricultural land as the main factor behind the changes in the statistical patterns of the hydro climatological series.…”

Section: Introductionmentioning

confidence: 99%

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Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil

Silva

Ferraz

Sousa

et al. 2022

Rev. Bras. Ciênc. Ambient.

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Flow is one of the hydrological variables of greatest interest due to its connection with water availability and its multiple uses. However, in recent years this resource has been threatened by intense land use and climate change, affecting patterns previously considered to be stationary. The goal of this study was to evaluate trends in changes of patterns of flow, precipitation, and land use in a basin located in the Brazilian Cerrado. 33 years of rainfall, fluviometric, and land use data were used, covering the period of 1985 to 2018 on an annual scale. Mann-Kendall and Sen Slope’s nonparametric test was applied to evaluate the trends in temporal series, as well as the Spearman Rho and Pettit, which were used to analyze the correlations between variables and detect the point of change in the series, respectively. The results show statistically significant trends in flow reduction over time. At the same time, a considerable reduction in natural areas occurred, with an increase of +750% in agricultural areas. The results also show that although a tendency to reduce precipitation was detected, its magnitude was not significant, with land use changes being the main factor for the negative changes in the flow of the Rio Grande tributary.

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Section: Correlation Analysis Between the Variables Flow Land Use And...mentioning

confidence: 55%

Section: Rainfall Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil

Silva

Ferraz

Sousa

et al. 2022

Rev. Bras. Ciênc. Ambient.

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“…Changes in land use and coverage from the advancement of anthropic actions, with the suppression of native vegetation areas, can cause changes in hydrological regimes in river watersheds (Ferreira et al, 2020). Therefore, the objective of this work was to identify anthropic activities and classify the conservation status in the areas of headsprings and their surroundings, located at a watershed inserted in the Cerrado Biome, and propose actions to prevent and control the different degradation processes.…”

Section: Introductionmentioning

confidence: 99%

Environmental diagnosis of water source in a Brazilian Cerrado watershed

et al. 2020

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A lack of planning characterize the most demographic occupation process in Brazil, occurring in a disorderly manner and with inappropriate occupations, resulting in damage to natural resources. This process is recurrent in the Cerrado Biome, currently the agricultural frontier of the country. Thus, the objective of this work was to identify anthropic activities and classify the conservation status in the headsprings (water sources) and surroundings areas of a watershed inserted in the Cerrado biome, besides proposing measures to prevent and control the different degradation processes. From February to July 2016, visits were made to 37 headsprings and their surroundings, located in the watershed of Santa Fé de Minas River. Impacts of anthropic actions are identified directly or indirectly, classifying the areas according to the state of conservation: preserved, anthropized and degraded. All visited places presented some type of negative interference from human activities. The most frequent activities were unpaved roads, monoculture of eucalyptus and cattle farming. According to the classification, only 6% of the areas are on preserved condition, while 70% are anthropized and 24% degraded. The main types of found degradation were erosions in different stages, compaction and silting. In addition, no conservationist practices are present in the areas. Therefore, to reduce or prevent future degradation in the watershed, it proposed some mitigating actions, such as the isolation of headsprings and their surroundings, adaptation of roads and eucalyptus plantation areas, and maintenance of preservation areas.

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Assessment of the effects of land use and cover changes and climatic variability on streamflow in a Brazilian savannah basin

Kolling Neto,

Souza

2024

Theor Appl Climatol

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Tendência em séries hidrológicas e de mudanças no uso e cobertura da terra da bacia hidrográfica do rio Guanhães, Minas Gerais

Abstract: Tendência em séries hidrológicas e de mudanças no uso e cobertura da terra da bacia hidrográfica do rio Guanhães, Minas GeraisTrend in hydrological series and changes in land use and land cover in the Guanhães, Minas Gerais river basin

Cited by 4 publications

References 18 publications

Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil

Trend in hydrological series and land use changes in a tropical basin at Northeast Brazil

Environmental diagnosis of water source in a Brazilian Cerrado watershed

Assessment of the effects of land use and cover changes and climatic variability on streamflow in a Brazilian savannah basin

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