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A Modeling Framework: To Analyze the Relationship between Accessibility, Land Use and Densities in Urban Areas

Amila Jayasinghe (), N. B. S. Madusanka (), Chethika Abenayake () and P. K. S. Mahanama ()
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Amila Jayasinghe: Urban Simulation Lab, Department of Town and Country Planning, University of Moratuwa, Moratuwa 10400, Sri Lanka
N. B. S. Madusanka: Urban Simulation Lab, Department of Town and Country Planning, University of Moratuwa, Moratuwa 10400, Sri Lanka
Chethika Abenayake: Urban Simulation Lab, Department of Town and Country Planning, University of Moratuwa, Moratuwa 10400, Sri Lanka
P. K. S. Mahanama: Urban Simulation Lab, Department of Town and Country Planning, University of Moratuwa, Moratuwa 10400, Sri Lanka

Sustainability, 2021, vol. 13, issue 2, 1-18

Abstract: The study proposes a framework to model the three-dimensional relationship among density, land use, and accessibility in urban areas constructively contributing to overcome the limitations noted in the domains of urban planning and transport planning. First, most of the existing studies have focused on the topological characteristics in capturing the accessibility, but a limited attention has been given on measuring the accessibility by considering both topological and roadway characteristics. Second, the existing research studies have acknowledged the relationship among density, land use, and accessibility while a limited attention has been given to develop a modeling framework to capture the three-dimensional relationship. The modelling framework was tested in three urban areas in Sri Lanka. The research first analyzed the three-dimensional relationship among density, land use, and accessibility in the case studies. Then, the study developed a set of regression models to capture the density from the land use and accesability. The proposed model recorded a satisfactory level of accuracy (i.e., R 2 > 0.70) on a par with internationally accepted standards. The relationship was further elaborated through a decision tree analysis and 4D plot diagrams. Findings of the study can be utilized to model the density of a given land use and the correspondent accessibility scenarios. The proposed model is capable of quantifying the impact of the changes in the density correspondent to the accessibility and land use. Therefore, the study concludes that this will be an effective tool for decision-makers in the fields of land-use planning and transport planning for scenario building, impact analysis, and the formulation of land use zoning and urban development plans aiming at the overarching sustainability of future cities.

Keywords: density; transport network; accessibility; land use; urban form; spatial modeling; simulation method; urban planning; transport planning (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
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