Spatial and Temporal Dynamics of Groundwater Vulnerability to Contaminants under Climate and Land Use Changes in the Pra and Ankobra Basins

Watershed Ecology and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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Impacts of Climatic Fluctuations and Vegetation Greening on Regional Hydrological Processes: A Case Study in the Xiaoxinganling Mountains–Sanjiang Plain Region, Northeastern China

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(15), P. 2709 - 2709

Published: July 24, 2024

The Xiaoxinganling Mountains–Sanjiang Plain region represents a crucial ecological security barrier for the Northeast China and serves as vital national grain production. Over past two decades, has undergone numerous restoration projects. Nevertheless, combined impact of enhanced vegetation greening global climate change on regional hydrological cycle remains inadequately understood. This study employed distributed model ESSI-3, reanalysis datasets, multi-source satellite remote sensing data to quantitatively evaluate influences dynamics processes. period spans from 2000 2020, during which there were significant increases in precipitation leaf area index (p < 0.05). simulation results exhibited strong agreement with observed river discharge, evapotranspiration, terrestrial water storage anomalies, thereby affirming ESSI-3 model’s reliability assessment. By employing both constant scenario that solely considered dynamic integrated dynamics, findings reveal that: (1) Regionally, driven by increased significantly augmented runoff fluxes (0.4 mm/year) components (2.57 mm/year), while evapotranspiration trends downward, attributed primarily reductions solar radiation wind speed; (2) Vegetation reversed decreasing trend an increasing trend, thus exerting negative storage. However, long-term simulations demonstrated (0.38 (2.21 continue increase, mainly due increments surpassing those evapotranspiration; (3) Spatially, altered surface soil moisture content eastern forested areas increase decrease. These suggested sub-regional initiatives, such afforestation, influence cycle, especially higher greening. persistent could effectively mitigate deficits induced study’s outcomes provide basis alleviating concerns regarding potential consumption risks associated future extensive projects, offering scientific guidance sustainable resource management.

Language: Английский

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Dynamic land cover and ecosystem service changes in global coastal deltas under future climate scenarios

Ocean & Coastal Management, Journal Year: 2024, Volume and Issue: 258, P. 107384 - 107384

Published: Sept. 19, 2024

Language: Английский

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Identifying freshwater wetland suitable habitat through a hydrological-biological connectivity framework: A case study of Naoli River wetlands, China

Ecological Indicators, Journal Year: 2024, Volume and Issue: 170, P. 112993 - 112993

Published: Dec. 18, 2024

Language: Английский

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Impacts of Hydrological Connectivity on the Spatiotemporal Heterogeneity of Suitable Wetland Habitats: A Case Study of Naoli River Wetlands, China

Published: Jan. 1, 2024

Language: Английский

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Reconstructing Long-Term, High-Resolution Groundwater Storage Changes in the Songhua River Basin Using Supplemented GRACE and GRACE-FO Data

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(23), P. 4566 - 4566

Published: Dec. 5, 2024

The Gravity Recovery and Climate Experiment (GRACE) enables large-scale monitoring of terrestrial water storage changes, significantly contributing to hydrology related fields. However, the coarse resolution groundwater anomaly (GWSA) data limits local-scale research utilizing GRACE GRACE-FO missions. In this study, we develop a regional downscaling model based on linear regression relationship between GWSA environmental variables, reducing grid obtained from approximately 25 km 1 km. First, estimate missing values monthly continuous (TWSA) for period 2003 2020 using interpolated multi-channel singular spectrum analysis (IMSSA). Next, apply balance equation separate TWSA, which is provided jointly by Global Land Data Assimilation System (GLDAS) distributed ecohydrological ESSI-3. We then employ partial least squares (PLSR) identify most significant variables GWSA. Precipitation (Prec), normalized difference vegetation index (NDVI), actual evapotranspiration (AET), with variable importance in projection (VIP) greater than 1.0, are recognized as effective reconstructing long-term, high-resolution changes. Finally, downscale reconstruct long-term (2003–2020), (1 × km) Songhua River Basin fused supplemented GRACE/GRACE-FO data, employing either geographically weighted (GWR) or random forest (RF) models. results demonstrate superior performance GWR (CC = 0.995, NSE 0.989, RMSE 2.505 mm) compared RF downscaling. downscaled not only achieves high spatial but also exhibits improved accuracy when situ observation records. This enhances understanding spatiotemporal variations due local agricultural industrial use, providing scientific basis resource management.

Language: Английский

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Investigation of the Basin Characteristics through Morphometric Analysis of Hadejia River Sub-Basin: Implications for Groundwater Recharge

African Journal of Environment and Natural Science Research, Journal Year: 2024, Volume and Issue: 7(3), P. 21 - 35

Published: July 16, 2024

Understanding the geohydrological properties of a drainage basin in relation to topographical feature and its flow patterns depends heavily on morphometric analysis. Estimating watershed's frequency infiltration runoff as well other hydrological characteristics is also helpful. The study was conducted using Geographical Information System (GIS) techniques with aim establishing relationship between surface morphometry, underlying geology groundwater recharge. For detailed measurement analysis, Digital Elevation Model (DEM) high resolution imageries were employed for delineation, slope characterization, channel network extraction stream ordering order derive linear, areal, relief aspects parameters. findings showed that total number 116 streams joined 4th which 83 1st order, 25 2nd 7 3rd major trunk stream, occupied an area 1486.86km2. network's system exhibits dendritic design. results further indicate values frequency, number, density, texture, length overland flow, elongation ratio are 0.08, 0.032, 0.41km/km2, 0.023, 1.22km, 0.54 28.59m respectively. observed both areal parameters generally low. Low criteria indicates sub-basin at youthful stage development possesses very good permeable subsurface formation prospect possibility potential resources. result help us understand connections variables geomorphological guidance and/or decision-making instruments authorities develop decisions environmentally friendly growth basin, water supply planning, budgeting, disaster mitigation within Hadejia river sub-basin.

Language: Английский

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Assessment of the effects of land use and cover changes and climatic variability on streamflow in a Brazilian savannah basin

Theoretical and Applied Climatology, Journal Year: 2024, Volume and Issue: 155(9), P. 8755 - 8770

Published: Aug. 27, 2024

Language: Английский

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