Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa
As nitrogen pollution increasingly threatens water quality in the Lake Victoria Basin, it is essential to investigate the spatial factors influencing nitrogen source use. Understanding these determinants is crucial to inform effective strategies to combat eutrophication, enhance nutrient management,...
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| Format: | Article |
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Elsevier
2024-12-01
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| Series: | Environmental and Sustainability Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2665972724001521 |
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| author | Catherine Mathenge Stephen Mureithi Soul-Kifouly Midingoyi Benjamin Nyilitya Geoffrey Kironchi Cargele Masso |
| author_facet | Catherine Mathenge Stephen Mureithi Soul-Kifouly Midingoyi Benjamin Nyilitya Geoffrey Kironchi Cargele Masso |
| author_sort | Catherine Mathenge |
| collection | DOAJ |
| description | As nitrogen pollution increasingly threatens water quality in the Lake Victoria Basin, it is essential to investigate the spatial factors influencing nitrogen source use. Understanding these determinants is crucial to inform effective strategies to combat eutrophication, enhance nutrient management, ensure food security and promote sustainable ecological development. This study investigated spatial variation of N sources, the farmers' socio-demographic and farm characteristics factors influencing farmers' choice of nitrogen sources. Data was collected from 1500 farmers between October and December 2020. The farmers were randomly selected in Kenya, Rwanda, Uganda, Burundi and Tanzania country sub-basins within the Lake Victoria basin (LVB). Spatial autocorrelation was used to evaluate the spatial variation of the nitrogen sources while the Optimized Parameter Geographical Detector (OPGD) model was used to identify the factors influencing the choice or use of N sources. The OPDG results indicate that the country of residence and livestock ownership are the primary factors accounting for 31.9% and 22.1% of the variation in nitrogen sources across the entire Lake Victoria Basin, respectively. The major sub-basin factors influencing the use of N sources were both farm characteristics (types of crops grown and farm size) and social socio-demographic factors of the farmer (education). These findings highlight the need for tailored strategies, accounting for geographical variations, farm characteristics and socio-demographic factors are essential when formulating nitrogen management strategies and policies at local and regional scales within the LVB. |
| format | Article |
| id | doaj-art-51f4fe8d85da4636ab4197b473f6b658 |
| institution | Kabale University |
| issn | 2665-9727 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environmental and Sustainability Indicators |
| spelling | doaj-art-51f4fe8d85da4636ab4197b473f6b6582024-12-08T06:12:18ZengElsevierEnvironmental and Sustainability Indicators2665-97272024-12-0124100484Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East AfricaCatherine Mathenge0Stephen Mureithi1Soul-Kifouly Midingoyi2Benjamin Nyilitya3Geoffrey Kironchi4Cargele Masso5Department of Land Resource Management and Agricultural Technology, University of Nairobi, Kenya; International Institute of Tropical Agriculture C/O ICIPE, Nairobi, Kenya; Corresponding author. Department of Land Resource Management and Agricultural Technology, University of Nairobi, Kenya.Department of Land Resource Management and Agricultural Technology, University of Nairobi, KenyaNational Institute of Agricultural Research, BeninWater Research & Data Division, Ministry of Water, Sanitation and Irrigation, Nairobi, KenyaDepartment of Land Resource Management and Agricultural Technology, University of Nairobi, KenyaOne CGIAR, International Livestock Research Institute, Nairobi, KenyaAs nitrogen pollution increasingly threatens water quality in the Lake Victoria Basin, it is essential to investigate the spatial factors influencing nitrogen source use. Understanding these determinants is crucial to inform effective strategies to combat eutrophication, enhance nutrient management, ensure food security and promote sustainable ecological development. This study investigated spatial variation of N sources, the farmers' socio-demographic and farm characteristics factors influencing farmers' choice of nitrogen sources. Data was collected from 1500 farmers between October and December 2020. The farmers were randomly selected in Kenya, Rwanda, Uganda, Burundi and Tanzania country sub-basins within the Lake Victoria basin (LVB). Spatial autocorrelation was used to evaluate the spatial variation of the nitrogen sources while the Optimized Parameter Geographical Detector (OPGD) model was used to identify the factors influencing the choice or use of N sources. The OPDG results indicate that the country of residence and livestock ownership are the primary factors accounting for 31.9% and 22.1% of the variation in nitrogen sources across the entire Lake Victoria Basin, respectively. The major sub-basin factors influencing the use of N sources were both farm characteristics (types of crops grown and farm size) and social socio-demographic factors of the farmer (education). These findings highlight the need for tailored strategies, accounting for geographical variations, farm characteristics and socio-demographic factors are essential when formulating nitrogen management strategies and policies at local and regional scales within the LVB.http://www.sciencedirect.com/science/article/pii/S2665972724001521Nitrogen sourcesLake victoria basinSocio-demographic factorsOptimal parameter geographical detector modelNitrogen management practices |
| spellingShingle | Catherine Mathenge Stephen Mureithi Soul-Kifouly Midingoyi Benjamin Nyilitya Geoffrey Kironchi Cargele Masso Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa Environmental and Sustainability Indicators Nitrogen sources Lake victoria basin Socio-demographic factors Optimal parameter geographical detector model Nitrogen management practices |
| title | Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa |
| title_full | Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa |
| title_fullStr | Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa |
| title_full_unstemmed | Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa |
| title_short | Unveiling the determinants of the spatial variability of nitrogen sources use in the Lake Victoria basin, East Africa |
| title_sort | unveiling the determinants of the spatial variability of nitrogen sources use in the lake victoria basin east africa |
| topic | Nitrogen sources Lake victoria basin Socio-demographic factors Optimal parameter geographical detector model Nitrogen management practices |
| url | http://www.sciencedirect.com/science/article/pii/S2665972724001521 |
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