Simulating the Hydrological Processes under Multiple Land Use/Land Cover and Climate Change Scenarios in the Mahanadi Reservoir Complex, Chhattisgarh, India

Water, Journal Year: 2023, Volume and Issue: 15(17), P. 3068 - 3068

Published: Aug. 27, 2023

Land use/land cover (LULC) and climate are two crucial environmental factors that impact watershed hydrology worldwide. The current study seeks to comprehend how the evolving LULC patterns impacting of Mahanadi Reservoir catchment. A semi-distributed Soil Water Assessment Tool (SWAT) model was utilized simulate various water balance elements. Twelve distinct scenarios were developed by combining three different climatic data periods (1985–1996, 1997–2008, 2009–2020) with four sets land use maps (1985, 1995, 2005, 2014). SWAT demonstrated strong performance in simulating monthly stream flows throughout calibration validation phases. reveals changes have a effect on environment. Specifically, lead heightened streamflow reduced evapotranspiration (ET). These mainly attributed amplified urbanization diminished presence bodies, forest cover, barren within combined change shifts complex interactions. Therefore, present offers an understanding over past few decades influenced hydrological behavior catchment Chhattisgarh. findings this potential offer advantages governmental policymakers, resource engineers, planners seeking effective strategies for management. would be particularly relevant context ecological regions similar those In addition, rational regulatory framework is essential assisting stakeholders managing resources appropriately developing entire

Language: Английский

---

A framework model to integrate sources and pathways in the assessment of river water pollution

Environmental Pollution, Journal Year: 2024, Volume and Issue: 347, P. 123661 - 123661

Published: Feb. 26, 2024

Metal and nutrient pollution, soil erosion, alterations in climate hydrology are prevalent issues that impact the water quality of riverine systems. However, integrated approaches to assess isolate causes paths river pollution scarce, especially case watersheds impacted by multiple hazardous activities. Therefore, a framework model for investigating sources was developed. The chosen study area Paraopeba River basin located Minas Gerais, Brazil. Besides agriculture, industrial, urban sources, this region profoundly affected rupture B1 tailings dam (in January 2019) at Córrego do Feijão mine, resulting release metal-rich waste. Considering situation, thirty-nine physicochemical hydromorphological parameters were examined basin, 2019-2023 period. analysis involved various statistical techniques, including bivariate multivariate methods such as correlation analysis, principal component clustering. mainly metal contamination from collapse, whereas contamination, industrial discharges, predominantly its tributaries. Additionally, elevated concentrations aluminum, iron, nitrate, sulfate both main tributaries can be attributed diffuse point source pollution. In terms hydromorphology type, interaction between woody vegetation erosion-resistant soils, latosols, contributes stability riverbanks river. Meanwhile, tributaries, presence neosols sparse urbanized areas promoted riverbank erosion potentially amplifying While conducted particular watershed, findings based on methodology applied universally. Hence, insights surface research valuable resource researchers studying with diverse sources.

Language: Английский

---

Groundwater flow and transport of metals under deposits of mine tailings: A case study in Brumadinho, Minas Gerais, Brazil

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100690 - 100690

Published: March 13, 2024

The deposits of mine tailings can be a source groundwater contamination by metals. In this study, we simulated the concentrations iron, manganese and aluminum in potentially affected drainage from located Brumadinho (Brazil). aim was to verify whether observed region attributed these drainages. simulation used FREEWAT graphical interface, which incorporates MODFLOW model, hydraulic properties existing unconfined confined aquifers, spatial distribution tailings' deposits, dissolved iron measured drilled wells. period 20 years, starting 2019 after collapse B1 dam Córrego do Feijão Vale, S.A. modeling results revealed plumes metal progressively less dispersed over time, aquifer, increased aquifer. both aquifers were generally lower than legal limits imposed for human consumption, although some areas vicinity had higher those limits, especially widened time. most relevant result revelation that contribution wells might have not exceeded 1%. This is important management standpoint, because monitoring anthropogenic cases (where rock weathering dominates chemistry) becomes more challenging.

Language: Английский

---

Unveiling hydrological responses in Madagascar’s major river basins: addressing data scarcity and land-use change impacts

Hydrological Sciences Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Language: Английский

---

The modelling of river water contamination by tailings mudflows: The case of phosphorus in the Paraopeba River basin

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100701 - 100701

Published: March 26, 2024

The Soil and Water Assessment Tool (SWAT) was used to assess total phosphorus concentrations (TOT-P) fluxes (TOT_P) in the Paraopeba River basin, located state of Minas Gerais, Brazil, following collapse tailings dam B1 Brumadinho. model calibrated validated for periods before (2000–2018) after (2019–2021) Brumadinho 25 January 2019, with great accuracy measured by various performance indicators (e.g., R2 ≈ 0.8). flow phosphorus-containing sludge from iron-ore explored Córrego do Feijão Mine Vale, SA, released break has impacted water through large increments TOT-P near site (60–100%, pre-rupture values varying between 0.06 0.1 mg/L). But other major sources were flagged, namely urban Betim region that raised 0.9 mg/L periodically during entire simulation period. study also revealed controls concentration coverage forests lowered down at 0.5–0.8 μg/L.km2. lowering rate was, however, dependent on occupation argisols. As per results, larger percentage argisols a will be surrounding courses, meaning are prone erosion leaching. A cluster analysis input terrain slope, soil type) output runoff) variables SWAT allowed relating surface- TOT_P underground-dominant hydrological processes, respectively runoff groundwater flow, linking them specific environmental such as steep slopes first case latosols smooth landscapes second case. management implications retrieved this holistic assessment discussed. Finally, checked against Brazilian standards. In regard, compared limits established Resolution 454/2012 National Environmental Council – CONAMA. Some sub-basins exhibited levels above legal threshold, contamination viewed systemic requiring immediate action implementation sewage treatment best practices agriculture), well monitoring spatial temporal frames. existence extreme rainfall events basin main cause inaccuracies, overestimated TOT-P.

Language: Английский

---

Geospatial modeling of hydrological ecosystem services in an ungauged upper Yamuna catchment using SWAT

Ecological Informatics, Journal Year: 2023, Volume and Issue: 78, P. 102335 - 102335

Published: Oct. 15, 2023

Language: Английский

---

Role of backwater effects on the attenuation of metal spreading in rivers: A study in the Paraopeba River after the B1 tailings dam collapse in Brumadinho

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100740 - 100740

Published: April 26, 2024

The B1 tailings dam of Córrego do Feijão iron-ore mine Vale SA, located in the Ferro-Carvão stream watershed (Brumadinho municipality, state Minas Gerais, Brazil), collapsed 25 January 2019. This accident had unprecedent water resources management impacts Paraopeba River basin, parent stream, marked by suspension drinking supply to Metropolitan Region Belo Horizonte, which was decided after huge rise turbidity and metal concentrations aquatic environment, mostly iron manganese. authorities keep use downstream site prohibited today, entailed a number studies understand predict evolution spreading before envisaging any lift. One those is presented now purpose assess role weir 40 km from outlet, attenuation manganese fluxes. called Igarapé modeling dissolved using RiverFlow 2D software revealed 33.5-fold fluxes per unit length, 3062.0 g/yr.km upstream 91.4 downstream, under flows typical 10-year return periods. related with backwater effects that reduced flow velocities inundated banks during flood events, induced precipitation iron-bearing sand particles. not visible for because element preferably included silt clay particles were affected their small sizes (and hence weights). Our results corroborate previous outcomes highlighted capacity retain tailings, decelerating propagation opened time window remove large volume still deposited over river bed through dredging. monitoring eventual treatment also paramount seem be flooding.

Language: Английский

---

Deterioro de ecosistemas y paisajes: Lo último al 2023

KANYÚ, Journal Year: 2024, Volume and Issue: 2(I), P. 46 - 64

Published: Jan. 31, 2024

Actualmente el deterioro de los ecosistemas y paisaje es un problema ambiental trascendencia, conocimiento factores especial importancia pues permite generar acciones remediación, por ello presente se orienta a responder mediante revisión sistemática PRISMA ¿Cuáles son principales paisaje? Los estudios en su mayoría realizaron China, España Estados Unidos, donde identificaron antrópicos que generaron cambio climático actúa principalmente ecosistémico paisajístico, siendo impacto negativo afecta al componente abiótico, además identifica otros como la salinización, uso tierra cobertura del suelo, sequía extrema, árboles metales pesados, incendios forestales microplásticos.

---

Assessing the Hydrological Response to Land Use Changes Linking SWAT and CA‐Markov Models

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(11)

Published: Nov. 1, 2024

ABSTRACT Land use change, as a major driving factor of watershed hydrological process, has significant influence on change. In addition, series models, important tools for simulating impacts, are widely employed in studying land However, when employing model to analyse the impacts changes, most previous studies focused evolution historical change and lacked reasonable predictions future use. Therefore, it is necessary extend such scenarios cope with possible variations basin. Given this, this paper making Wuwei section Shiyang River Basin study area, coupled SWAT (Soil Water Assessment Tool) simulation CA‐Markov (cellular automata‐Markov chain) prediction regional effects caused by changes. general directly uses system‐generated suitability atlas. contrast, applied logistic regression Multi‐criteria evaluation (MCE) methods construct atlas, thereby establishing Logistic‐CA‐Markov MCE‐CA‐Markov models. Based results, main results follows: (1) The area mainly grassland barren, accounting more than 80%. Additionally, forest changing at highest rate among all types. (2) terms percentage forest, predicted (Multi‐criteria evaluation‐cellular largest coverage (57.78%), whereas Logistic lowest (54.69%), indicating that former pays attention sustainable development ecological environment. (3) area's R 2 = 0.83, NSE 0.79, PBIAS −18.6%, validation 0.81, 0.76, −17.8% demonstrate favourable application model. (4) simulated runoff under scenarios, amount increasing would eventually rise water yield (WYLD) lateral (LATQ), subsurface (GWQ), reducing surface (SURQ). contributes better understanding impact resources balance, thus guiding management development.

Language: Английский

---

Watershed’s spatial targeting: Enhancing payments for ecosystem services to scale up agroecosystem restoration through nature-based solutions

Ecosystem Services, Journal Year: 2024, Volume and Issue: 71, P. 101679 - 101679

Published: Dec. 5, 2024

Language: Английский

---