Data-driven landfill suitability mapping in Lagos State using GIS-based multi-criteria decision making

• DOI: 10.1007/s13762-024-05803-5
• Publication Date: 2024-07-04T08:15:06Z
• Authors: A. Tella; M. R. U. Mustafa; G. Animashaun; N. Adebisi; C. J. Okolie; A.-L. Balogun; Q. B. Pham; R. Alani
• Keywords: Land Cover; Environmental engineering science; Elevation (ballistics)

Abstract Careful selection of landfill sites is essential because improper dumping wastes can negatively impact health and degrade the environment. Therefore, this research presents a Geographic Information System based—Fuzzy Analytic Hierarchy Process multicriteria decision-making approach for zonation in Lagos State, Nigeria. Due to rapid urbanisation leading urban expansion conversion landfills built-up areas functioning have been reduced. After comprehensive literature review, study considers nine factors: slope, elevation, land use cover, lithology, soil type, Normalised Difference Vegetation Index, distances roads, distance settlements, water bodies. From decision matrix, bodies, (LULC) cover were ranked with percentage weights 22%, 19%, 17% 11%, respectively. Afterwards, potential mapped classified into five classes: very low (626.48 km 2 , 16.66%), (1277.56 33.97%), moderate (1227.97 32.65%), high (500.52 13.31%), (128.13 3.41%). The suitability classes highest areal coverage due state's increased population urbanisation. A large are located Epe, Ikorodu, Ibeju-Lekki local government (LGAs) which lower levels compared most other LGAs. governments stakeholders should explore these siting landfills.