Environmental fragility and risks to water sustainability in the extreme south of Bahia, Brazil: implications for the provision of basic sanitation services

Sustainable Water Resources Management, Journal Year: 2024, Volume and Issue: 10(2)

Published: Feb. 27, 2024

Language: Английский

---

Impacts of land use/land cover on water quality: a contemporary review for researchers and policymakers

Water Quality Research Journal, Journal Year: 2024, Volume and Issue: unknown

Published: April 22, 2024

Abstract Few factors are as important in determining water quality land use/land cover (LULC). Many use activities, including agriculture, urban development, mining, and commercial forestry, tend to be sources of diffuse pollution. By contrast, indigenous vegetation can act a sink, thus providing some protection from anthropogenic contamination. Notwithstanding the large body research demonstrating these facts, decision-makers require clear accessible information assist them developing effective management plans that fully cognisant manifold impacts LULC on resources. Reviewing available literature, this article, therefore, offers critical overview typical quality. An strategy for managing highlighted article is maintenance sufficient amount unfragmented natural vegetation, not only within riparian zones but also across catchment areas. However, knowledge gaps identified review indicate further context-specific required determine types minimum vegetative protect resources pollution potential impact landscape fragmentation ability A discussion therefore provided.

Language: Английский

---

Evaluation of Surface Water Quality in the Betwa River Basin through the Water Quality Index Model and Multivariate Statistical Techniques

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(12), P. 18871 - 18886

Published: Feb. 14, 2024

Language: Английский

---

Modelling relationships between land use and water quality using statistical methods: A critical and applied review

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 362, P. 121290 - 121290

Published: May 31, 2024

Land use/land cover (LULC) can have significant impacts on water quality and the health of aquatic ecosystems. Consequently, understanding quantifying nature these is essential for development effective catchment management strategies. This article provides a critical review literature in which use statistical methods to model LULC demonstrated. A survey publications, included hundreds original research articles, revealed several common themes findings. However, there are also persistent knowledge gaps, areas methodological uncertainty, questions application that require further study clarification. These relate primarily appropriate analytical scales, significance landscape configuration, estimation thresholds, as well potentially confounding influence extraneous variables. Moreover, geographical bias published means need ecologically climatically disparate regions, including less developed countries Global South. The focus this not provide technical techniques themselves, but examine important practical considerations their modelling quality.

Language: Английский

---

Applications of Water Quality Index (WQI) and Geostatistical Methods for Long-Term Assessment of Mountain Lake: A Source for Drinking Water in Darjeeling Hill Town

Springer geography, Journal Year: 2025, Volume and Issue: unknown, P. 399 - 414

Published: Jan. 1, 2025

Language: Английский

---

Assessing the Use of Alternative Soil Data in Hydrological and Water Quality Modeling with SWAT+: SSURGO and POLARIS at Sub-Basin and Field Scales

Water, Journal Year: 2025, Volume and Issue: 17(5), P. 670 - 670

Published: Feb. 25, 2025

The accuracy of soil databases is essential in hydrological modeling, yet limited studies have evaluated the implications using emerging datasets like POLARIS compared to traditional ones such as SSURGO. This study evaluates performance data for simulating streamflow and sediment yield at both sub-basin field scales within Big Muddy Watershed (BMW), Illinois, U.S.A., a soft-calibrated SWAT+ model. field-scale analysis focused on cropland-dominated HRUs from two sub-basins with contrasting POLARIS-SSURGO similarities scale, optimizing computational efficiency. results were those derived widely used SSURGO database At showed strong overall agreement over 81 BMW sub-basins, minor discrepancies, especially predictions, which exhibited more variability. between was good variables, yield, though greater variability shown level. scales, outcomes did not always follow same trend, discrepancies observed some HRUs. suggested that while can replicate SSURGO’s outcomes, this similarity does extend predictions vice versa. alignment (88.9% “very good” agreement). However, decreased 42.9% 33.3% specific sub-basins. indicates aggregation reduces local variability, finer reveal sensitivity differences. highlights robust alternative modeling. Future research should explore its broader application across diverse conditions.

Language: Английский

---

Evaluation of Various Land Use Metrics for Enhancing Stream Water Quality Predictions

Water, Journal Year: 2025, Volume and Issue: 17(6), P. 849 - 849

Published: March 16, 2025

Water quality in streams is primarily affected by various land use practices. This study analyzes water data collected from the outlets of 113 watersheds across three South Atlantic states USA. The objective to evaluate relationship between different metrics and long-term stream quality, specifically investigating whether incorporating spatial proximity uses outlet can enhance predictions quality. To achieve this, four distinct were utilized assess their influence on first metric, known as Lumped method, assigns equal weight all uses. second, Inverse Distance Weights (IDWs), gives greater located closer stream. third Outlet (IDWO), weights according watershed outlet. final metric focuses hydrologically sensitive areas (HSAs), which are within that generate majority runoff. results indicated emphasizes significance forested lands, whereas HSAs, IDWs, IDWO highlight importance distribution agricultural industrial lands watershed. These findings support hypothesis considering hotspot relative positions improve Overall, incorporation shows not only extent change a critical, but also these or plays significant role.

Language: Английский

---

Influence of land use on spatial distribution of primary productivity in aquatic environment in the Weihe River Basin, China

Journal of Arid Land, Journal Year: 2025, Volume and Issue: 17(3), P. 304 - 323

Published: March 1, 2025

Language: Английский

---

Evaluating the Environmental Quality of Forest Remnants Using Landscape Metrics

Sustainability, Journal Year: 2024, Volume and Issue: 16(4), P. 1543 - 1543

Published: Feb. 12, 2024

Forest remnants are hotspots of biodiversity and play an important role in providing services such as regulating the climate, reducing surface runoff, helping erosion control, protecting contributing to balance ecosystems, other functions. Despite this, natural vegetation is fragmented limited a few remnants, which gradually suffering from anthropogenic pressures. Assessing environmental quality these therefore vital understanding their current condition provide support for conservation. This study aims assess forest six water basins municipality Campinas/SP, Brazil. were mapped, was assessed by applying analytic hierarchy process (AHP), considering set structural landscape metrics previously selected literature. Of 2319 evaluated, 4.5% 30%, respectively, registered high low quality. The Atibaia Jaguari recorded highest number environmentally fragile due small size being predominantly elongated, erodibility soil. In Anhumas, Capivari, Capivari-Mirim, Quilombo basins, medium-sized predominate. There greater distance between them, with intensity land use/land cover surroundings, related prevalence urbanized areas. Specific management actions should be taken each basins.

Language: Английский

---

Estimating thresholds of natural vegetation for the protection of water quality in South African catchments

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 945, P. 173924 - 173924

Published: June 15, 2024

Many of South Africa's current water quality problems have been attributed to diffuse pollution derived from poorly regulated land use/land cover (LULC) transformations. To mitigate these impacts, the preservation an adequate amount natural vegetation within catchment areas is important management strategy. However, it not clear how much required provide levels protection, nor at which scale(s) this strategy would be most effective. investigate possibility estimating minimum thresholds protect resources, regression analysis was used model relationships between (measured using Nemerow's Pollution Index) and metrics multiple scales across a sample sub-catchments located along western, southern, south-eastern coast Africa. With conspicuous outliers removed, models were able explain up 82 % variability in relationship use quality. Moreover, statistically significant, nonlinear, inverse found proportions levels. This strongest when measured (1) whole (2) 200 m riparian buffer zone. The further indicated that approximately 80 90 necessary maintain ecologically acceptable Additional nonlinear estimated breakpoint suggested if fall below 45 (across catchment) 60 (within zone) dramatic increase can expected. are recommended as guidelines inform integrated resources strategies aimed protecting study area. Likewise, methods described for estimation similar other regions.

Language: Английский

---