Analysis of the impact of urban landscape characteristics on the spatial distribution of dengue fever

Authors: Zhichao Li*, Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing,China, Renaud Marti, Espace-dev, UMR 228/IRD/UM/UR/UG, Institut de Recherche pour le Développement (IRD), Montpellier, France, Nadine Dessay, Espace-dev, UMR 228/IRD/UM/UR/UG, Institut de Recherche pour le Développement (IRD), Montpellier, France, Helen Gurgel, Department of Geography (GEA), University of Brasilia (UnB), Brasília, Brazil, Emmanuel Roux, Espace-dev, UMR 228 IRD/UM/UR/UG, Institut de Recherche pour le Développement (IRD), Montpellier, France, Thibault Catry, Espace-dev, UMR 228 IRD/UM/UR/UG, Institut de Recherche pour le Développement (IRD), Montpellier, France, Peng Gong, Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
Topics: Geography and Urban Health, Landscape, Spatial Analysis & Modeling
Keywords: dengue, urban landscape, GIS, landscape metrics
Session Type: Paper
Day: 4/5/2019
Start / End Time: 3:05 PM / 4:45 PM
Room: Tyler, Marriott, Mezzanine Level
Presentation File: No File Uploaded


Urban landscape represents the mosaic of the potential habitats and breeding sites of dengue vectors and the areas of human activities and presence, whose composition and configuration affect the possibility of human exposure to dengue vectors, thereby affect the spatial distribution of dengue. Studying the relationship between urban landscape features and spatial distribution of dengue cases in a given study area might be useful to better understand the role of landscape in local dengue transmission that is the key issue of this study. Taking the dengue epidemic of 2010 in São Sebastião (one of the administrative regions of Brasilia, Brazil) as example, we locate the notified dengue cases and compute the census tract-level incidence according to the 2010 Brazilian Census. The spatio-temporal distribution of incidence rates are described. Second, we summarize the urban landscape factors related to spatial distribution of dengue based on a systematic literature review, identify such factors using GIS data and remote sensing images. Third, we compute the landscape ecological metrics (e.g. indexes of Area-edge, Shape and Aggregation) for each landscape factors and analyze the dengue incidence-landscape metric variables relationships using regression models. The results could be used for optimizing the actual strategies of dengue control from the perspective of urban landscape characteristics.

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