Water erosion vulnerability and sediment delivery rate in upper Iguaçu river basin – Paraná

Durães, Matheus Fonseca; Filho, José Alexandre Pinto Coelho; Oliveira, Vinícius Augusto de

doi:10.1590/2318-0331.011616029

Cited by 7 publications

(10 citation statements)

References 49 publications

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“…The most erodible soils, dominated by Distrofic Latossol (Oxisol), are located in the northern part of the catchment, according to the soil map provided by the Brazilian Agricultural Corporation (EMBRAPA) [67]. The results are also aligned with further literature values in that geographic area, which also assessed that the K Factor for Latossol (Oxisol) is in the range of 0.019-0.026 t ha h ha −1 MJ −1 mm −1 [68][69][70][71]. The western part of the catchment, which is also dominated by Oxisol, showed low soil erodibility with values reaching up to 0.013 t ha h ha −1 MJ −1 mm −1 .…”

Section: K Factorsupporting

confidence: 55%

“…further literature values in that geographic area, which also assessed that the K Factor for Latossol (Oxisol) is in the range of 0.019-0.026 t ha h ha −1 MJ −1 mm −1 [68][69][70][71]. The western part of the catchment, which is also dominated by Oxisol, showed low soil erodibility with values reaching up to 0.013 t ha h ha −1 MJ −1 mm −1 .…”

Section: K Factormentioning

confidence: 75%

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To What Extent Can a Sediment Yield Model Be Trusted? A Case Study from the Passaúna Catchment, Brazil

Sotiri

Hilgert

Durães

et al. 2021

Water

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Soil degradation and reservoir siltation are two of the major actual environmental, scientific, and engineering challenges. With the actual trend of world population increase, further pressure is expected on both water and soil systems around the world. Soil degradation and reservoir siltation are, however, strongly interlinked with the erosion processes that take place in the hydrological catchments, as both are consequences of these processes. Due to the spatial scale and duration of erosion events, the installation and operation of monitoring systems are rather cost- and time-consuming. Modeling is a feasible alternative for assessing the soil loss adequately. In this study, the possibility of adopting reservoir sediment stock as a validation measure for a monthly time-step sediment input model was investigated. For the assessment of sediment stock in the reservoir, the commercial free-fall penetrometer GraviProbe (GP) was used, while the calculation of sediment yield was calculated by combining a revised universal soil loss equation (RUSLE)-based model with a sediment delivery ratio model based on the connectivity approach. For the RUSLE factors, a combination of remote sensing, literature review, and conventional sampling was used. For calculation of the C Factor, satellite imagery from the Sentinel-2 platform was used. The C Factor was derived from an empirical approach by combining the normalized difference vegetation index (NDVI), the degree of soil sealing, and land-use/land-cover data. The key research objective of this study was to examine to what extent a reservoir can be used to validate a long-term erosion model, and to find out the limiting factors in this regard. Another focus was to assess the potential improvements in erosion modeling from the use of Sentinel-2 data. The use of such data showed good potential to improve the overall spatial and temporal performance of the model and also dictated further opportunities for using such types of model as reliable decision support systems for sustainable catchment management and reservoir protection measures.

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Section: K Factorsupporting

confidence: 55%

Section: K Factormentioning

confidence: 75%

To What Extent Can a Sediment Yield Model Be Trusted? A Case Study from the Passaúna Catchment, Brazil

Sotiri

Hilgert

Durães

et al. 2021

Water

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“…This study used the positive correlation between SDR and erosion severity to determine the proportion of SOC transported into the river network. Numerous studies have confirmed this correlation (Duraes et al, ; Jing et al, ; Kang, ; Li & Liu, ; Xie & Tianhong, ), and observed SDR values collected from literature verify this relationship (Yue et al, ). Previous work has also indicated the large impacts of topography, vegetation cover, and rainfall intensity on the SDR (Genson, ; Kang, ; Li et al, ; Saygin et al, ).…”

Section: Discussionmentioning

confidence: 71%

Redistribution of Soil Organic Carbon Induced by Soil Erosion in the Nine River Basins of China

et al. 2019

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Global soil erosion redistributes a large amount of soil organic carbon (SOC) and is potential to significantly change the terrestrial carbon budget. However, there are large uncertainties in the redistribution of SOC within the terrestrial and aquatic ecosystems. Based on two national survey data sets on soil erosion and sediment measurements from hydrological stations, this study estimated the redistribution of sediment and SOC in the nine river basins of China during 1995China during -1996China during and 2010China during -2012. Over these two periods, 3.55-4.50 Pg of soil and 68.42-77.32 Tg C of SOC were eroded each year. For the SOC budget, on average 57% and 47% of the eroded SOC was deposited over land, 25% and 44% was deposited in the channel, and 18% and 8% was delivered into the sea during 1995-1996 and 2010-2012, respectively. Compared with the corresponding magnitudes during 1995-1996, the eroded SOC, the SOC deposited over land, and the SOC discharged into the sea decreased during 2010-2012, and only the SOC deposited into the river channel increased (from 19.5 to 30.1 Tg C yr −1 ). The changes in SOC deposition in the channel of the Yangtze River and the Yellow River basins demonstrate that the influence of human activities is extensive. Our results show that the erosion-induced redistribution of SOC alters the carbon budget of China.

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“…Depiné et al (2013) determinaram a quantidade e características físicas do sedimento em transporte após simulação de escoamento em estradas rurais. Durães et al (2016), avaliando a sensibilidade à erosão causada pela água e a concentração de sólidos em suspensão, realizaram a modelagem do escoamento e a taxa de entrega sedimentométrica, permitindo identificar regiões mais propensas à perda de solo em uma bacia paranaense.…”

Section: Introductionunclassified

“…Das ações degradatórias com maior potencial de impacto ambiental em bacias hidrográficas destaca-se a perda de solo, e visto isso, a intensificação de pesquisas na área da sedimentologia é o primeiro passo para o desenvolvimento da gestão dos recursos hídricos, permitindo aos responsáveis implementar políticas eficientes de uso da terra, de forma a mitigar os efeitos adversos da urbanização, industrialização e práticas agrícolas nos corpos d'água (DURÃES et al, 2016). Desse modo, destaca-se a importância da aquisição de dados hidrológicos e sedimentológicos que alimentem e fundamentem estudos que colaborem com a gestão hídrica.…”

Section: Introductionunclassified

Estimativa Da Descarga De Sedimentos Transportados Na Bacia Hidrográfica Do Rio Verruga

Ferraz¹,

Lima²,

Guedes³

et al. 2018

Agrarian

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RESUMOO excesso de sedimentos presentes nos cursos d'água são fontes de sérios problemas envolvendo a qualidade e quantidade de água no rio, causando grandes distúrbios socioambientais. Dessa forma, o estudo e monitoramento hidrossedimentológico é de suma importância para definir medidas de mitigação dos impactos ambientais causados pela perda de solo. Portanto, objetivou-se a aplicação da metodologia indireta para determinação dos sedimentos suspensos através da coleta por integração vertical, o que possibilitou a análise sedimentológica, além da medição da vazão, para incrementação do banco de dados referente à bacia do rio Verruga. Assim, foi possível determinar a descarga sólida durante os meses de monitoramento, bem como estabelecer a curva chave para cálculo da vazão com base na cota da seção estudada. Por fim, foi determinada a concentração de sedimentos suspensos, além da calibração de equações para estimativa de valores futuros de descarga sólida diária. PALAVRAS-CHAVE: Hidrologia, Monitoramento, Sedimentos. ESTIMATION OF DISCHARGE OF SEDIMENTS TRANSPORTED IN THEHYDROGRAPHIC BOWL OF RIO VERRUGA ABSTRACT The excess of sediments present in the water courses are sources of serious problems involving the quality and quantity of water in the river, causing great social and environmental disturbances. Thus, hydrosedimentological study and monitoring is important to define measures to mitigate environmental impacts caused by soil loss. Therefore, the objective was to apply the indirect methodology for the determination of suspended sediments through vertical integration, which allowed the

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Water erosion vulnerability and sediment delivery rate in upper Iguaçu river basin – Paraná

Cited by 7 publications

References 49 publications

To What Extent Can a Sediment Yield Model Be Trusted? A Case Study from the Passaúna Catchment, Brazil

To What Extent Can a Sediment Yield Model Be Trusted? A Case Study from the Passaúna Catchment, Brazil

Redistribution of Soil Organic Carbon Induced by Soil Erosion in the Nine River Basins of China

Estimativa Da Descarga De Sedimentos Transportados Na Bacia Hidrográfica Do Rio Verruga

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