Impacts of land use and cover change on Paraíba do Sul whatershed streamflow using the SWAT model

Andrade, Marcel Pereira de; Ribeiro, Celso Bandeira de Melo

doi:10.1590/2318-0331.252020190034

Cited by 11 publications

(5 citation statements)

References 19 publications

(25 reference statements)

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“…This parameter shows the percentage of estimated data with 95% uncertainty such that the larger the P‐factor, the closer you get to the desired result. The second parameter is the “R‐factor,” which is a criterion for estimating the proximity between high and low bands used to evaluate the quality of modeling results 21 …”

Section: Methodsmentioning

confidence: 99%

Evaluating climate changes and land use changes on water resources using hybrid Soil and Water Assessment Tool‐DEEP optimized by metaheuristics

Liu

Mizzi

2020

Concurrency and Computation

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The objective of this research is to investigate the effect of land-use and climate change on the volume of runoff produced and its impact on water resources. It is clear that the more accurate the assessment of runoff in the future, the better the evaluation of the impact of land-use and climate changes on water resources. Thus, to more accurately predict water sources in the future, runoff is estimated using two Soil and Water Assessment Tool (SWAT) and SWAT-DEEP-IFSO models. The results showed that the SWAT-DEEP-IFSO model has a better estimation than the SWAT method. Because Deep Belief Network and an improved optimization algorithm called Improved Fluid Search Optimization (IFSO) algorithm have been utilized in optimizing the hybrid SWAT model that can reduce the error of runoff simulation. After selecting the best model for estimating runoff, the effect of land-use and climate change is evaluated using different scenarios. Results show that the simulated runoff under the influence of climate and land-use changes can impact on the average yearly and monthly runoff. These factors have a significant effect on the average yearly runoff changes and are predicted an increasing trend for average yearly runoff. But climate and land-use changes have a different impact on the different months and for some months of the year the runoff has an increasing trend and for some months the runoff has a decreasing trend. Based on land-use scenarios, it is found that due to the decrease in rangelands and increase in agricultural lands, there is a possibility of severe floods and drought periods in the region, which reduces the water resources of the study area. K E Y W O R D S deep belief network, fluid search optimization algorithm, runoff, soil and water assessment tool, water resource 1 INTRODUCTION Today, all climate scientists agree that global warming causes important climatic phenomena and due to climate changes, the probability of heavy rainfall and flood risk has been increased. 1 Global warming dramatically affects rainfall characteristics, soil moisture, water levels of the seas and oceans, and airflow patterns. Also, it can cause severe floods and storms and reduce glaciers. Reducing snowfall and rain and increasing drought, thereby increasing soil salinity and reducing freshwater resources in coastal areas can be another result of global warming. 2 One of the effects of climate change can be seen in renewables resources such as water resources which have different impacts from point-to-point. This effect of

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Section: Methodsmentioning

confidence: 99%

Evaluating climate changes and land use changes on water resources using hybrid Soil and Water Assessment Tool‐DEEP optimized by metaheuristics

Liu

Mizzi

2020

Concurrency and Computation

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“…Comparing this study area with the Guanabara Bay, the Gargaú mangrove region is less urbanized (± 530,000 inhabitants) and the mangroves occupy an area ten times smaller (± 8.0 km 2 ). As a result of the land use, deforestation, and several dams built along this river, the volume of water has decreased in recent decades, as well as the sediments export (ANDRADE; RIBEIRO, 2020). For most of the year, the secondary Paraíba do Sul estuary is homogeneous and shows a predominance of freshwater (MOLISANI et al, 1999).…”

Section: Figurementioning

confidence: 99%

Contamination in newly hatched larvae of the mangrove crab Ucides cordatus and a new perspective about trace elements transport

2021

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Mangroves are relevant ecosystems due to their ecological role, economic use, and social importance. One of the most abundant and important species in Brazilian mangroves is the exploited crab Ucides cordatus. This study focuses on this species and the aim was to evaluate the concentration of trace elements in the hepatopancreas of ovigerous females, eggs (pre-hatching and hatching stages), and for the first time, in newly hatched larvae. Ovigerous females were captured in two Southeastern Brazil mangroves (Guanabara Bay and Paraíba do Sul River’s secondary estuary) and spawning was held in spawning tanks, in the laboratory. Some females were not taken to the tanks, but they were frozen right after collection. There was no significant difference in trace element concentration between these females and those kept in the spawning tanks. Both essential and non-essential trace elements were detected in newly hatched larvae. Comparing with the adult female, the elements Zn, Cu, and Mn showed the highest concentrations in larvae and eggs. Vanadium, Cr, and Mn concentrations were significantly higher in hatching eggs than observed in newly hatched larvae, indicating the retention of elements in the eggshell. Considering the V (0.17 - 1.17 μg.g−1 dry weight), Cu (14.1 - 41.1 μg.g−1 dry weight), and Zn (235.4 - 263.9 μg.g−1 dry weight) concentrations in newly hatched larvae, with the same order of magnitude observed in suspended particulate matter (SPM) and sediments in suspension, the planktonic larval dispersion could result in the transport of elements beyond the mangrove, and their introduction in coastal waters.

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“…Herein, we observed that the area with dense vegetation cover (TPC) displayed a negative correlation (-0.506) with the variables associated with the eutrophication process, TSITP (0.429), and TSICL (0.386) (Table 5). Besides, it was reported that the decrease of the forest cover in the PSR basin has intensified the drought and the minimum flows (Andrade & Ribeiro, 2020).…”

Section: Multivariate Correlation Analysismentioning

confidence: 99%

“…This scenario of intense anthropogenic activity impacts negatively the water quality of the PSR and its affluents. The impacts are mainly related to land use in the riparian zone and hydric pollution (Andrade & Ribeiro, 2020). Recently, the Southeast of Brazil faced a scenario of water scarcity considered the worst in 80 years (Targa & Batista, 2015).…”

Section: Introductionmentioning

confidence: 99%

Relação entre índice de estado trófico e o uso do solo em áreas de preservação permanente no Rio Paraíba do Sul

Queiroz¹,

Silva²,

Marassi³

et al. 2021

REGA

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Impacts of land use and cover change on Paraíba do Sul whatershed streamflow using the SWAT model

Cited by 11 publications

References 19 publications

Evaluating climate changes and land use changes on water resources using hybrid Soil and Water Assessment Tool‐DEEP optimized by metaheuristics

Evaluating climate changes and land use changes on water resources using hybrid Soil and Water Assessment Tool‐DEEP optimized by metaheuristics

Contamination in newly hatched larvae of the mangrove crab Ucides cordatus and a new perspective about trace elements transport

Relação entre índice de estado trófico e o uso do solo em áreas de preservação permanente no Rio Paraíba do Sul

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