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Improved accessibility modeling and its relation to poverty - A case study in Southern Sri Lanka

Ahlström, Anders LU ; Pilesjö, Petter LU and Lindberg, Jonas (2011) In Habitat International 35(2). p.316-326
Abstract
Many studies have found close relationships between accessibility and various socio-economic indicators. Yet, since accessibility tends to have differentiated effects, both socially and spatially, there is a need for a model which allows for a disaggregated analysis of accessibility. The model should be possible to use in areas where road network data is incomplete. In this paper such an accessibility model is developed, using a raster-based approach in a Geographical Information System (GIS). One important factor in accessibility modeling is to estimate the traveling speed on different landscape entities. This paper develops a method where local knowledge and physical geographical data are integrated in the GIS model. From the interview... (More)
Many studies have found close relationships between accessibility and various socio-economic indicators. Yet, since accessibility tends to have differentiated effects, both socially and spatially, there is a need for a model which allows for a disaggregated analysis of accessibility. The model should be possible to use in areas where road network data is incomplete. In this paper such an accessibility model is developed, using a raster-based approach in a Geographical Information System (GIS). One important factor in accessibility modeling is to estimate the traveling speed on different landscape entities. This paper develops a method where local knowledge and physical geographical data are integrated in the GIS model. From the interview data the best door-to-door traveling speeds of three road classes were estimated. The results from these calculations have been used as frictions for a cost surface. The analysis shows strong relationships between poverty indicators and estimated spatial accessibility, stronger than the commonly used accessibility measure of Euclidian distance. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
GIS, Accessibility, Sri Lanka, Poverty
in
Habitat International
volume
35
issue
2
pages
316 - 326
publisher
Elsevier
external identifiers
  • wos:000287428600017
  • scopus:78651515843
ISSN
0197-3975
DOI
10.1016/j.habitatint.2010.11.002
language
English
LU publication?
yes
id
b212e8b7-3b80-432e-b573-47ec5c64c640 (old id 1925945)
date added to LUP
2011-05-10 14:33:57
date last changed
2017-11-05 04:14:19
@article{b212e8b7-3b80-432e-b573-47ec5c64c640,
  abstract     = {Many studies have found close relationships between accessibility and various socio-economic indicators. Yet, since accessibility tends to have differentiated effects, both socially and spatially, there is a need for a model which allows for a disaggregated analysis of accessibility. The model should be possible to use in areas where road network data is incomplete. In this paper such an accessibility model is developed, using a raster-based approach in a Geographical Information System (GIS). One important factor in accessibility modeling is to estimate the traveling speed on different landscape entities. This paper develops a method where local knowledge and physical geographical data are integrated in the GIS model. From the interview data the best door-to-door traveling speeds of three road classes were estimated. The results from these calculations have been used as frictions for a cost surface. The analysis shows strong relationships between poverty indicators and estimated spatial accessibility, stronger than the commonly used accessibility measure of Euclidian distance. (C) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Ahlström, Anders and Pilesjö, Petter and Lindberg, Jonas},
  issn         = {0197-3975},
  keyword      = {GIS,Accessibility,Sri Lanka,Poverty},
  language     = {eng},
  number       = {2},
  pages        = {316--326},
  publisher    = {Elsevier},
  series       = {Habitat International},
  title        = {Improved accessibility modeling and its relation to poverty - A case study in Southern Sri Lanka},
  url          = {http://dx.doi.org/10.1016/j.habitatint.2010.11.002},
  volume       = {35},
  year         = {2011},
}