Alterações na Cobertura do Solo em Teresina, Piauí, Brasil

Lima, Silvia Maria Santana Andrade; Lopes, Wilza Gomes Reis; Façanha, Antônio Cardoso

doi:10.14393/sn-v33-2021-58922

Cited by 1 publication

(2 citation statements)

References 5 publications

(5 reference statements)

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“…Quantitative methods were used to analyze changes in land use, land cover, and geomorphology in the landslide zone studied [63]. Multitemporal mapping of land use, land cover, and geomorphology was based on 2D and 3D (stereoscopic) interpretations of remote sensing records at a scale of 1:500 [64]. Initially, the aerial photographs were georeferenced by associating each pixel with a specific location on the ground (control points).…”

Section: Discussionmentioning

confidence: 99%

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Challenges for Sustainable Urban Planning: A Spatiotemporal Analysis of Complex Landslide Risk in a Latin American Megacity

Vargas-Cuervo,

Hernández-Peña,

Zafra-Mejía

2024

Sustainability

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This paper analyzes the spatiotemporal evolution of a complex landslide risk scenario in a Latin American megacity, underscoring the key challenges it poses for sustainable urban planning in such cities. This research draws upon multiple studies commissioned by the mayor’s office of the megacity of Bogota, Colombia, and utilizes aerial photographs and satellite imagery from diverse sensor types. The methodology used considered six spatiotemporal analysis scenarios: rural/natural, mining, urban, landslide risk, stabilization and environmental park, and informal reoccupation. The findings reveal a complex interplay between the megacity’s peripheral areas, which face constraints for human settlement, and their potential for construction material exploitation. This complex relationship was further compounded by weaknesses in planning and controlling peripheral occupations, coupled with a burgeoning demand for developable land in a landslide risk context (landslide area: 73 ha). The analysis scenarios highlighted the predominant use of a reactive urban planning approach that addressed events, changes, or problems after they had occurred, rather than proactively anticipating and preventing potential risks at the study site. The detected land-use transformations unveiled different historical moments, culminating in a landslide disaster (804 houses destroyed, 3000 families at risk). This catastrophe necessitated a radical and significant intervention, incurring substantial costs for the megacity administration (USD 26.05 million). This landslide was the largest recorded in the megacity and one of the most extensive in urban areas across Latin America.

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Section: Discussionmentioning

confidence: 99%

“…Vector interpretations of the images were performed with statistical analysis using ArcGIS V.10.3. Software [64].…”

Section: Discussionmentioning

confidence: 99%