Threshold changes in the production potential of bush clumps along piosphere gradients in arid thicket mosaics DOI Creative Commons
Anton Schmidt, Graham I. H. Kerley, Munyaradzi Manjoro

et al.

African Journal of Range and Forage Science, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 8

Published: Dec. 4, 2024

AbstractVarious studies have noted threshold changes in vegetation composition and structure soil physical chemical properties the Albany Thicket biome of South Africa. The aim this study is to assess if these environment transformed ecosystem's forage production potential. To estimate potential we compare three models that make use mean variance Normalized Difference Vegetation Index (NDVI) obtained from two WorldView-2 satellite images. For models, NDVI values were sampled along four independent piosphere gradients vary their intensity rest herbivory. Our results indicate model makes after a good rainfall year able discern corroborate environment. support growing body evidence increases ecosystem processes services are important indicators impending social-ecological systems.Keywords: herbivoryNDVIregime-shifttransformationvariance

Language: Английский

Assessing climatic impacts on land use and land cover dynamics in Peshawar, Khyber Pakhtunkhwa, Pakistan: a remote sensing and GIS approach DOI
Rana Waqar Aslam, Iram Naz, Abdul Quddoos

et al.

GeoJournal, Journal Year: 2024, Volume and Issue: 89(5)

Published: Aug. 31, 2024

Language: Английский

Citations

18

Geospatial insights into groundwater contamination from urban and industrial effluents in Faisalabad DOI Creative Commons
Abdul Quddoos,

Khalid Muhmood,

Iram Naz

et al.

Discover Water, Journal Year: 2024, Volume and Issue: 4(1)

Published: July 24, 2024

Abstract Groundwater remains the most dependable resource for various essential uses such as drinking, cleansing, agricultural irrigation, and industrial applications. In urban areas, dependency on groundwater to meet water demands is significant. However, this faces threats from overuse poor management, leading a degradation in quality primarily due unchecked release of household wastes. The escalation activities rapid growth have amplified volume wastewater, adversely affecting purity freshwater sources within aquifers. This investigation focuses evaluating impact effluents city Faisalabad. main contributors pollution include indiscriminate disposal through unlined drains extensive application chemical agents agriculture, fertilizers, pesticides. To understand physiochemical properties both, drain groundwater, samples were collected at distances 50 m, 100 150 m outlets. study utilized Geographic Information Systems (GIS) accurately map analyze distribution contaminants. Parameters pH, electrical conductivity (EC), total dissolved solids (TDS), hardness, bicarbonates, calcium magnesium chloride levels examined. findings indicated that contaminant highest increased concentration closer they drainage sources, with exception pH levels. All exceeded World Health Organization's (WHO) safe limits, deeming them unfit use. finding indicates widespread contamination, posing significant public health risks highlighting urgent need improved waste management treatment practices It underscores critical importance implementing effective control measures safeguard ensure security region. notable correlation was observed between pollutants key indicators EC, TDS, their role deteriorating aquifer quality. Moreover, exhibited pollutant concentrations compared those taken further away, distances.

Language: Английский

Citations

11

Integrated Geospatial and Geostatistical Multi-Criteria Evaluation of Urban Groundwater Quality Using Water Quality Indices DOI Open Access
Iram Naz, Hong Fan, Rana Waqar Aslam

et al.

Water, Journal Year: 2024, Volume and Issue: 16(17), P. 2549 - 2549

Published: Sept. 9, 2024

Groundwater contamination poses a severe public health risk in Lahore, Pakistan’s second-largest city, where over-exploited aquifers are the primary municipal and domestic water supply source. This study presents first comprehensive district-wide assessment of groundwater quality across Lahore using an innovative integrated approach combining geographic information systems (GIS), multi-criteria decision analysis (MCDA), indexing techniques. The core objectives were to map spatial distributions critical pollutants like arsenic, model their impacts on overall potability, evaluate targeted remediation scenarios. analytic hierarchy process (AHP) methodology was applied derive weights for relative importance diverse parameters based expert judgments. Arsenic received highest priority weight (0.28), followed by total dissolved solids (0.22) hardness (0.15), reflecting significance as hazards. Weighted overlay GIS delineated localized hotspots, unveiling severely degraded areas with very poor index values (>150) urban industrial zones Cantt, Model Town, parts City. corroborates reports unregulated effluent discharges contributing aquifer pollution. Prospective improvement scenarios projected that reducing heavy metals arsenic 30% could enhance indices up 20.71% critically localities Shalimar. Simulating advanced multi-barrier treatment processes showcased over 95% potential reduction levels, indicating requirement deploying oxidation filtration infrastructure aligned local contaminant profiles. support tool enables visualization complex patterns, evaluation options, prioritizing risk-mitigation investments distribution hazard exposures. framework equips planners utilities insights developing restoration policies through strategic interventions encompassing facilities, drainage improvements, pollutant discharge regulations. Its replicability other regions allows tackling widespread challenges robust data synthesis quantitative scenario modeling capabilities.

Language: Английский

Citations

11

Examining the landscape transformation and temperature dynamics in Pakistan DOI Creative Commons
Afia Ali, Bilal Hussain,

Riaz Ul Hissan

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 20, 2025

This study aims to examine the landscape transformation and temperature dynamics using multiple spectral indices. The processes of temporal fluctuations in land surface is strongly related morphological features area which determined, given factors significantly affect thermal properties surface. research being conducted Pakistan identify vegetation cover, water bodies, impervious surfaces, decadal remote sensing data with four intervals during 1993–2023 Mardan division, Khyber Pakhtunkhwa. To analyze dynamics, used indices including Land Surface Temperature, Normalized Difference Vegetation Index, Water Built-up Bareness Index by employing Google Earth Engine cloud computing platform. results suggest that there are differences type temperature, ranging from 15.58 °C 43.71 period. Nevertheless, larger were found cover protective forests area, especially northwestern southeastern parts system. These highlighted complexity relationship between regarding need for

Language: Английский

Citations

1

Assessment of Urban Environmental Quality by Socioeconomic and Environmental Variables Using Open‐Source Datasets DOI

Tan Lingye,

Nayyer Saleem, Rana Waqar Aslam

et al.

Transactions in GIS, Journal Year: 2024, Volume and Issue: 28(7), P. 2526 - 2544

Published: Sept. 22, 2024

ABSTRACT In this era of rapid development, environmental quality is an essential aspect sustainable development. A healthy urban environment supports, regulates, and provides livable conditions. areas, considerably affected by socioeconomic factors such as population expansion economic For decision‐making, it also significant for stakeholders policymakers to understand the impact on quality. While previous studies have examined quality, they often focused single cities or limited parameters. This research addresses these limitations conducting a comparative analysis two major Asian with similar demographic features, utilizing comprehensive set variables. Our innovative approach combines open‐source datasets advanced remote sensing techniques provide more holistic assessment over decades. We analyzed last decades selected parameters: surface greenness, moisture, land temperature. Lahore (Pakistan) Wuhan (China) were having approximately same features. Correlation matrix has been used assess relationship between variables social‐economic variables: carbon emission. coefficient indicated that correlates negatively greenness moisture both (−0.67 −0.71) District (−0.5 −0.75), respectively, while had positive relation temperature: 0.65 0.57 District, respectively. These effects are prominent within 10 km distance from city center, where substantial observed during time window.

Language: Английский

Citations

5

Analysis of the visual degradation of PV modules installed in different climatic zones in India DOI Creative Commons
Dinesh Yadav, Amit Kumar Saraf

Environment Development and Sustainability, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Language: Английский

Citations

0

Decadal Dynamics of Rangeland Cover Using Remote Sensing and Machine Learning Approach DOI
Yujing Yang, Zhiming Li, Abdul Quddoos

et al.

Rangeland Ecology & Management, Journal Year: 2025, Volume and Issue: 100, P. 1 - 13

Published: Feb. 14, 2025

Language: Английский

Citations

0

Economic limit calculate method of blocked layer released by water flood wells DOI Creative Commons
Fulin Wang

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(2), P. e0319186 - e0319186

Published: Feb. 24, 2025

Daqing Oilfield is in the forefront, because of polymer flooding well pattern was used to next production layer, so, first development layer sealed after and whose storage reserves very huge. To 2021, OOIP set type II reservoirs has been up 9603 × 10 4 t. In order release reduce influence on oil yield, water drive product through additional perforating, but economic boundary standard using not determined, based principle break-even seepage flow theory, this paper establishes formula for calculating limits various unsealing indexes by flood well, which can effectively solve problem communicating understanding engineering parameters released quantificational limit selection releasing. The result showed cumulative daily gradually decreases with prices increasing, vertically, increases input-output ratio (ROI) increases. FWHP b1-40-527 0.4 Mpa, spacing 300 m, radius 0.1 viscosity 8.8 mPa. s, time d, density 0.86 g/cm 3 , when ROI 1:2, lower raised 206.9 t increasing floor 0.69 t/d, minimum effective thickness 8.4 m as price 60 $/BBL, meanwhile, 421.4 1.4 t/d 40 $/BBL. After according limit, it verified actual data, that accumulated reached calculation increased re-unsealing. fluid 41.41 1.53 cut 96.3% before releasing, then, firstly July total 6.6 released, 1.92 96.3%, 0.39 than requirement 0.79 $/BBL therefore, permeability layers were added, 10.7 meets unsealing, 67.79 3.2 95.3%, 1.25 decreased 1.0%, releasing measure valid still now.

Language: Английский

Citations

0

Spatio-temporal analysis of urban expansion and land use dynamics using google earth engine and predictive models DOI Creative Commons

Ai-Guo Zhang,

Aqil Tariq, Abdul Quddoos

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 27, 2025

Urban expansion and changes in land use/land cover (LULC) have intensified recent decades due to human activity, influencing ecological developmental landscapes. This study investigated historical projected LULC urban growth patterns the districts of Multan Sargodha, Pakistan, using Landsat satellite imagery, cloud computing, predictive modelling from 1990 2030. The analysis images was grouped into four time periods (1990–2000, 2000–2010, 2010–2020, 2020–2030). Google Earth Engine cloud-based platform facilitated classification 5 ETM (1990, 2000, 2010) 8 OLI (2020) Random Forest model. A simulation model integrating Cellular Automata an Artificial Neural Network Multilayer Perceptron MOLUSCE plugin QGIS employed forecast resulting maps showed consistently high accuracy levels exceeding 92% for both across all periods. revealed that Multan's built-up area increased 240.56 km2 (6.58%) 440.30 (12.04%) 2020, while Sargodha experienced more dramatic 730.91 (12.69%) 1,029.07 (17.83%). Vegetation remained dominant but significant variations, particularly peri-urban areas. By 2030, is stabilize at 433.22 km2, primarily expanding southeastern direction. expected reach 1,404.97 showing balanced multi-directional toward northeast north. presents effective analytical method processing, GIS, change modeling evaluate spatiotemporal changes. approach successfully identified main transformations trends areas highlighting potential urbanization zones where opportunities exist developing planned managed settlements.

Language: Английский

Citations

0

Enhancing vegetation cover growth through water spreading bunds and dry afforestation in arid rangelands: Integrating remote sensing indicators with field insights DOI
Sawaid Abbas,

Aqeela Mobeen Akhter,

Muhammad Mushtaque

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 978, P. 179382 - 179382

Published: April 19, 2025

Language: Английский

Citations

0