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Neighborhood dynamics of urban expansion based on morphological spatial pattern analysis and geospatial techniques: a case study of the Colombo metropolitan area, Sri Lanka

Neighborhood dynamics of urban expansion based on morphological spatial pattern analysis and... This study examined neighborhood dynamics of urban expansion based on morphological spatial pattern analysis (MSPA) and geospatial techniques in the Colombo Metropolitan Area (CMA) of Sri Lanka from 1992 to 2014. Traditionally, urban expansion has been detected using absolute land use/cover (LULC) terms and landscape patterns (i.e. urban and non-urban). However, non-traditional characterization of urban expansion with neighborhood rules provides a better understanding of urban transformation which is essential to urban planners and managers. This study therefore used MSPA of Landsat images (1992, 2001 and 2014) to classify and detect the expansion of urban land uses based on neighborhood rules. Urban expansion intensity and topologies (infill, extension, and leapfrog) were also employed for further analysis. The results show that the CMA experienced rapid urban expansion, recording a 288% increase in the total urban footprint from 1992 to 2014. The annual urban expansion intensity was higher during the 2000s (1.45%) than during the 1990s (0.95%). Urban expansion topological analysis revealed that leapfrog was the most dominant pattern throughout the study’s temporal extent. An outward infill expansion from the city center was observed, while urban extension exhibited a ribbon-type development along the main transport corridors and coastal belts. The patterns and intensity of urban expansion in the CMA are directly linked to the economic, demographics, and political changes in Sri Lanka. Overall, the study provides an improved understanding of urban expansion in the CMA and offers directions that could be considered in future urban planning initiatives. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Geographer Taylor & Francis

Neighborhood dynamics of urban expansion based on morphological spatial pattern analysis and geospatial techniques: a case study of the Colombo metropolitan area, Sri Lanka

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Neighborhood dynamics of urban expansion based on morphological spatial pattern analysis and geospatial techniques: a case study of the Colombo metropolitan area, Sri Lanka

Abstract

This study examined neighborhood dynamics of urban expansion based on morphological spatial pattern analysis (MSPA) and geospatial techniques in the Colombo Metropolitan Area (CMA) of Sri Lanka from 1992 to 2014. Traditionally, urban expansion has been detected using absolute land use/cover (LULC) terms and landscape patterns (i.e. urban and non-urban). However, non-traditional characterization of urban expansion with neighborhood rules provides a better understanding of urban transformation...
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Publisher
Taylor & Francis
Copyright
© 2021 Hong Kong Geographical Association
ISSN
2158-1762
eISSN
1022-5706
DOI
10.1080/10225706.2021.1903519
Publisher site
See Article on Publisher Site

Abstract

This study examined neighborhood dynamics of urban expansion based on morphological spatial pattern analysis (MSPA) and geospatial techniques in the Colombo Metropolitan Area (CMA) of Sri Lanka from 1992 to 2014. Traditionally, urban expansion has been detected using absolute land use/cover (LULC) terms and landscape patterns (i.e. urban and non-urban). However, non-traditional characterization of urban expansion with neighborhood rules provides a better understanding of urban transformation which is essential to urban planners and managers. This study therefore used MSPA of Landsat images (1992, 2001 and 2014) to classify and detect the expansion of urban land uses based on neighborhood rules. Urban expansion intensity and topologies (infill, extension, and leapfrog) were also employed for further analysis. The results show that the CMA experienced rapid urban expansion, recording a 288% increase in the total urban footprint from 1992 to 2014. The annual urban expansion intensity was higher during the 2000s (1.45%) than during the 1990s (0.95%). Urban expansion topological analysis revealed that leapfrog was the most dominant pattern throughout the study’s temporal extent. An outward infill expansion from the city center was observed, while urban extension exhibited a ribbon-type development along the main transport corridors and coastal belts. The patterns and intensity of urban expansion in the CMA are directly linked to the economic, demographics, and political changes in Sri Lanka. Overall, the study provides an improved understanding of urban expansion in the CMA and offers directions that could be considered in future urban planning initiatives.

Journal

Asian Geographer – Taylor & Francis

Published: Jul 3, 2022

Keywords: Urban expansion; morphological pattern analysis; urban topology; spatiotemporal analysis; Colombo metropolitan area; Sri Lanka

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