Groundwater potential assessment in the Eastern Cape, South Africa, using analytical hierarchical process (AHP) technique DOI Creative Commons

Nonkula Zenande,

Gbenga Olamide Adesola, Kakaba Madi

и другие.

Sustainable Water Resources Management, Год журнала: 2024, Номер 10(6)

Опубликована: Ноя. 25, 2024

Abstract Groundwater is crucial for the growth of any country. It a vital resource drinking water, agriculture, industry, and economic development. However, delineating groundwater potential zones requires systematic approach. This study assessed (GWPZ) in Ntabankulu municipality using remote sensing, geographic information systems, analytical hierarchical process (AHP) techniques. Six controlling parameters were integrated to assess zones, including lithology, slope, lineaments density, land use/land cover, drainage rainfall. The AHP pairwise comparison matrix was utilized determine normalized weight parameters. their classes assigned ranks, taking into account influence on accumulation. resultant GWPZ map generated by integrating weights ArcGIS 10.8 software. final from technique showed five GWPZ, very poor (13.06%), (25.36%), moderate (26.93%), good (22.72%), (11.93%). Validation done existing 242 boreholes area. Furthermore, receiver operating characteristics (ROC) curve plotted, area under (AUC) analysis indicated satisfactory accuracy prediction (AUC = 61%). results this will assist developing proper plan sustainable utilization resources within municipality.

Язык: Английский

Interdecadal Variations in Agricultural Drought Monitoring Using Land Surface Temperature and Vegetation Indices: A Case of the Amahlathi Local Municipality in South Africa DOI Open Access
Phumelelani Mbuqwa,

Hezekiel Bheki Magagula,

Ahmed Mukalazi Kalumba

и другие.

Sustainability, Год журнала: 2024, Номер 16(18), С. 8125 - 8125

Опубликована: Сен. 18, 2024

Agricultural droughts in South Africa, particularly the Amahlathi Local Municipality (ALM), significantly impact socioeconomic activities, sustainable livelihoods, and ecosystem services, necessitating urgent attention to improved resilience food security. The study assessed interdecadal drought severity duration Amahlathi’s agricultural potential zone from 1989 2019 using various vegetation indicators. Landsat time series data were used analyse land surface temperature (LST), soil-adjusted index (SAVI), normalized difference (NDVI), standardized precipitation (SPI). utilised GIS-based weighted overlay, multiple linear regression models, Pearson’s correlation analysis assess correlations between LST, NDVI, SAVI, SPI response extent. results reveal a consistent negative LST NDVI ALM, with an increase (R2 = 0.9889) temperature. accuracy dry areas increased 55.8% 2019, despite dense high average of 40.12 °C, impacting water availability, land, local ecosystems. shows ALM increasing since 2019. SAVI indicates slight improvement overall health 0.18 0.25 2009, but decrease 0.21 at 12 24 months that severely impacted cover 2014 notable recovery during wet periods 1993, 2000, 2003, 2006, 2008, 2013, possibly due temporary relief. findings can guide provincial monitoring early warning programs, enhancing resilience, productivity, especially farming communities.

Язык: Английский

Процитировано

5
Spatial assessment of climate change, water resource management, adaptation and governance in South Africa DOI Creative Commons
Ahmed Mukalazi Kalumba, Gbenga Abayomi Afuye,

Sonwabo Perez Mazinyo

и другие.

Frontiers in Water, Год журнала: 2025, Номер 7

Опубликована: Апрель 17, 2025

The study explored the intellectual domain of climate change, water resource management, adaptation, and governance (CCWRM_AG), identifying research hotspots, proposing solutions to address scarcity environmental impacts in South Africa. In total, 1,117 original published studies BibTeX format were obtained using Web Science Scopus databases from 1997 2022. data analyzed on CCWRM_AG includes top-cited articles distribution author keywords, most-cited journals, word cloud, thematic evolution top affiliations. National Integrated Water Information System (NIWIS) database was utilized monitor assess potential for shortages employed geobibliometrics, an integrated approach that combines bibliometric analysis remote sensing data, evaluate trends dam levels. field Africa is experiencing 18.98% annual growth citations per article, with University Kwazulu-Natal Cape Town ranking first highest total number articles, indicating their significant influence associated centers. Based keyword, change are central issues related drought shortage, a hint relatedness further studies. spatial reveals severe Western province, adversely affecting quality, agriculture, livelihoods due critically low Northern faces its arid lands, while other provinces show relatively stable availability. findings this can enhance multifaceted integrates robust infrastructure, regulatory policies, economic incentives mitigate impacts.

Язык: Английский

Процитировано

0
Appraising the accuracy of GIS-based bivariate statistical model for groundwater potential mapping in South Africa DOI Creative Commons
Gbenga Olamide Adesola, Oswald Gwavava, Benedict Kinshasa Pharoe

и другие.

Heliyon, Год журнала: 2025, Номер 11(10), С. e43411 - e43411

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Groundwater potential assessment in the Eastern Cape, South Africa, using analytical hierarchical process (AHP) technique DOI Creative Commons

Nonkula Zenande,

Gbenga Olamide Adesola, Kakaba Madi

и другие.

Sustainable Water Resources Management, Год журнала: 2024, Номер 10(6)

Опубликована: Ноя. 25, 2024

Abstract Groundwater is crucial for the growth of any country. It a vital resource drinking water, agriculture, industry, and economic development. However, delineating groundwater potential zones requires systematic approach. This study assessed (GWPZ) in Ntabankulu municipality using remote sensing, geographic information systems, analytical hierarchical process (AHP) techniques. Six controlling parameters were integrated to assess zones, including lithology, slope, lineaments density, land use/land cover, drainage rainfall. The AHP pairwise comparison matrix was utilized determine normalized weight parameters. their classes assigned ranks, taking into account influence on accumulation. resultant GWPZ map generated by integrating weights ArcGIS 10.8 software. final from technique showed five GWPZ, very poor (13.06%), (25.36%), moderate (26.93%), good (22.72%), (11.93%). Validation done existing 242 boreholes area. Furthermore, receiver operating characteristics (ROC) curve plotted, area under (AUC) analysis indicated satisfactory accuracy prediction (AUC = 61%). results this will assist developing proper plan sustainable utilization resources within municipality.

Язык: Английский

Процитировано

0