Uso do solo e monitoramento dos recursos hídricos no córrego do Ipê, Ilha Solteira, SP

Santos, Gilmar Oliveira; Hernández, Fernando Braz Tangerino

doi:10.1590/s1415-43662013000100009

Cited by 28 publications

(28 citation statements)

References 19 publications

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“…GUEDES et al (2012) obtained similar results. Other authors also attributed such spring water degradation, nearby cities, to clandestine effluent discharges, damaging water multiple uses (VANZELA et al, 2010;POLETO et al, 2010;BERTOSSI et al, 2013a;SANTOS & HERNANDEZ, 2013). Biological contamination of spring water undermines the chances of using it for irrigation purposes, mainly for in natura consumption crops.…”

Section: Resultsmentioning

confidence: 99%

“…The influence of land use and occupation on the study characteristics was determined using data provided by SANTOS & HERNANDEZ (2013). We performed physical, chemical, and biological analyses, being: temperature (T), total , dissolved and suspended solids (TS, DS and SS), turbidity (TU), pH, calcium (CA), magnesium (MG), total iron (Fe), electrical conductivity (EC), nitrite (NI), nitrate (NA), sulphate (SU), and fecal and total coliforms (FC and TC).…”

Section: Land Use and Occupation And Water Qualitymentioning

confidence: 99%

“…Water resources monitoring and land use and occupation spatialization are tools to help identify further environmental impacts, as well as evaluating possible influences of the surroundings on the aquatic medium, thus aiming to propose priorities and guiding future decisions (SANTOS & HERNANDEZ, 2013;BERTOSSI et al, 2013a).…”

Section: Introductionmentioning

confidence: 99%

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A Study of the Impact of Land Use and Occupation on Basin Water Quality Through Multivariate Statistics

et al. 2017

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Without effective actions to improve environmental management, water resources tend to become scarce. Thus, this study aimed to understand the processes influencing the physical, chemical, and biological properties of the water due to land uses and occupation in the Ipê stream basin, in Ilha Solteira -SP (Brazil), regarding the dependence of the analyzed variables. Monitoring of chemical, physical, and biological water quality was performed from 2006 to 2011, and the records of land use and occupation in 2011. A factorial multivariate analysis allowed us to understand that the processes in densely populated areas increased degradation of water by the input of organic loads, yet those of farming areas enhanced the degradation of the chemical and physical quality of spring waters. Therefore, installing irrigation systems near populated areas, for crops consumed in natura, may compromise this agricultural activity, as well as the absence of water filtration systems downstream agricultural areas. Furthermore, we concluded that multivariate statistics is a powerful tool to detect these influencing processes in water quality. In this study, this type of analysis played an important role isolating the processes acting on water quality.

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Section: Resultsmentioning

confidence: 99%

Section: Land Use and Occupation And Water Qualitymentioning

confidence: 99%

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A Study of the Impact of Land Use and Occupation on Basin Water Quality Through Multivariate Statistics

et al. 2017

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“…According to Vitte and Mello (2007, p. 130-131) "erosion problems in Brazil are the result of the combination of a rapid process of land occupation and technification, fragile soils and a climatic regimen that is propitious to the intense occurrence of this phenomenon." Erosive processes have diverse impacts on environmental components, with negative effects on soil fertility (Prasannakumar et al, 2012), the silting of rivers (Demarchi and Zimback, 2014), floods and gullies (Vieira, 2008), overflows (Zhou et al, 2008), changes in the landscape pattern (Shi et al, 2013), changes in water quality (Santos and Hernandez, 2013) and socioeconomic problems (Guerra et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Erosive Potential in Sub-basins of the Lower Itapecuru River in the State of Maranhão, Northeastern Brazil (Potencial erosivo das sub-bacias hidrográficas do Baixo Curso do Rio Itapecuru, Estado do Maranhão, Nordeste do Brasil)

Soares

Castro

Lopes³

et al. 2017

Rev. Bras. Geog. Fis.

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The aim of the present study was to estimate the loss of soil due to sheet erosion in ten sub-basins (SWDs) located in the lower course of the Itapecuru River based on different scenarios of land use and coverage in the years 2005, 2010 and 2015. For such, the Universal Soil Loss Equation (USLE), including the following factors: rainfall erosivity (R), soil erodibility (K), topographic factor (LS), soil use and conservation factor (CP). Annual R amounts were 11314.5 MJ mm ha -1 yr -1, with the greatest effects found in March and April. K values were related to soil types in the sub-basins, dominated by Plinthosols and Argilosols, with estimated contributions of 0.0429 and 0.030 t ha MJ -1 mm -1 , respectively. The LS factor demonstrated a flat, smooth topography with slopes ranging between 0 and 5° over 93% of the study area. The standard CP indicated that green areas were prevalent in all years analyzed and that the main changes in the ten-year period occurred in sub-basins 1, 2 and 10. Regarding the USLE, the "very low" class was the most representative throughout the time series. However, changes in the CP factor, especially in sub-basins 1 and 2, evidenced the expansion of areas susceptible to sheet erosion, with the increase in the occurrence of "moderate" and "moderate to strong" classes triggered by changes in landscape patterns. The present findings are important to environmental management and the prioritization of environmental conservation actions in the SWDs. Keywords: erosivity, erodibility, relief, soil conservation, USLE. Potencial erosivo das sub-bacias hidrográficas do

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“…These hydraulic structures are artificial artworks that alter the flow regime, increasing their susceptibility to silting process. Reducing the velocity of water flow due to the enlargement of the cross section (ALBERTIN et al, 2010;SANTOS & HERNANDEZ 2013) creates favorable conditions for sedimentation of solid material carried by the water course or arising by runoff from the watershed. This behavior, however, is responsible for the significant reduction in sediment load in rivers that have dams (SYVITSKI & KETTNER, 2011).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of sediment production and siltation in a small earth dam in Fernandópolis, SP

Vanzela¹,

Grecco²,

Neto³

et al. 2014

Eng. Agríc.

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ABSTRACT:The siltation is a natural process, but can be accelerated by human actions and results in major problems for the reservoirs, reducing its useful volume for irrigation. An example of this problem was the reduction of the area of mirror water of Fernandópolis municipal dam in 48.3% during 20 years. Therefore, this study aimed to evaluate the production of sediments and siltation of Fernandópolis municipal dam from a methodology that can be applied to small earth dams for agricultural purposes. For this, it was monitored, monthly throughout the year, the volume of sediment deposited in the reservoir. The percentage of retention sediment in Fernandópolis municipal dam ranged from 53.9 to 94.5%, that associated with a high specific sediment yield, will cause its full silting in at most 57 years. It is recommended to minimize this process the restoration of permanent preservation areas and the removal of 17,500 m 3 of sediment from the riverbed of the dam.KEYWORDS: hydro-sedimentology, use and land occupation, erosion. AVALIAÇÃO DA PRODUÇÃO DE SEDIMENTOS E DO ASSOREAMENTO EMPEQUENA BARRAGEM DE TERRA DE FERNANDÓPOLIS-SP 1 RESUMO: O assoreamento é um processo natural, mas que pode ser potencializado pelas ações antrópicas e resulta em grandes problemas para os reservatórios, reduzindo seu volume útil para a irrigação. Um exemplo deste problema foi a redução da área do espelho d'água da represa municipal de Fernandópolis em 48,3%, durante 20 anos. Por isso, este trabalho teve como objetivo avaliar a produção de sedimentos e o assoreamento da represa municipal de Fernandópolis a partir de metodologia que pode ser aplicável a pequenas barragens de terra para fins agrícolas. Para isto, foi monitorado, mensalmente, durante um ano, o volume de sedimento depositado na represa. O percentual de retenção de sedimentos na represa municipal de Fernandópolis variou de 53,9 a 94,5%, que associada a uma alta produção específica de sedimentos, provocará seu completo assoreamento em, no máximo, 57 anos. Recomendam-se para minimizar este processo, a restauração das áreas de preservação permanente e a retirada de 17.500 m 3 de sedimentos do leito da represa. PALAVRAS-CHAVE:hidrossedimentologia, uso e ocupação do solo, erosão.

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Uso do solo e monitoramento dos recursos hídricos no córrego do Ipê, Ilha Solteira, SP

Cited by 28 publications

References 19 publications

A Study of the Impact of Land Use and Occupation on Basin Water Quality Through Multivariate Statistics

A Study of the Impact of Land Use and Occupation on Basin Water Quality Through Multivariate Statistics

Erosive Potential in Sub-basins of the Lower Itapecuru River in the State of Maranhão, Northeastern Brazil (Potencial erosivo das sub-bacias hidrográficas do Baixo Curso do Rio Itapecuru, Estado do Maranhão, Nordeste do Brasil)

Evaluation of sediment production and siltation in a small earth dam in Fernandópolis, SP

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