Geospatial analysis with landsat series and sentinel-3B OLCI satellites to assess changes in land use and water quality over time in Brazil

Geospatial analyses have gained fundamental importance on a global scale following emphasis on sustainability. Here we geospatially analyze images from Landsat 2/5/7/8 satellites captured during 1975 to 2020 in order to determine changes in land use. Sentinel-3B OLCI (Ocean Land Color Instrument) images obtained in 2019 and 2021 were utilized to assess water resources, based on water turbidity levels (TSM_NN), suspended pollution potential (ADG_443_NN) and the presence of chlorophyll-a (CHL_NN) in order to temporally monitor the effectiveness of Brazilian legislation currently in force. This work on sustainability standards was applied to a hydrographic basin dedicated to agricultural production located in southern Brazil. Satellite images from Landsat 2/5/7/8 (1975 to 2020) and Sentinel-3B OLCI (2019 and 2021) revealed that changes in land use, vegetation cover and water in the Capinguí Dam reservoir detected high concentrations of ADG_443_NN (3830 m−1), CHL_NN (20,290 mg m−3) and TSM_NN (100 gm−3). These results can alert the population to the risks to public health and harm to hydrographic preservation, capable of covering large regions.

• Autores: Dal Moro, Leila; Stolfo Maculan, Laércio; Pivoto, Dieisson; Tibério Cardoso, Grace; Pinto, Diana; Adelodun, Bashir; Bodah, Brian William; Santosh, M.; Guedes Bortoluzzi, Marluse; Branco, Elisiane; Neckel, Alcindo
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2022
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/10721
• Acceso en línea: https://hdl.handle.net/11323/10721; https://repositorio.cuc.edu.co/
• Palabra clave: Landscape metrics; Land use change; SDG; Food security; Remote sensing
• Rights: openAccess
• License: Atribución 4.0 Internacional (CC BY 4.0)