Achieving a Sustainable Urban Form through Land Use Optimisation: Insights from Bekasi City’s Land-Use Plan (2010–2030)

Rahmadya Handayanto,Nitin Tripathi,Sohee Kim,Sumanta Guha

doi:10.3390/su9020221

Abstract

Cities worldwide have been trying to achieve a sustainable urban form to handle their rapid urban growth. Many sustainable urban forms have been studied and two of them, the compact city and the eco city, were chosen in this study as urban form foundations. Based on these forms, four sustainable city criteria (compactness, compatibility, dependency, and suitability) were considered as necessary functions for land use optimisation. This study presents a land use optimisation as a method for achieving a sustainable urban form. Three optimisation methods (particle swarm optimisation, genetic algorithms, and a local search method) were combined into a single hybrid optimisation method for land use in Bekasi city, Indonesia. It was also used for examining Bekasi city’s land-use-plan (2010–2030) after optimising current (2015) and future land use (2030). After current land use optimisation, the score of sustainable city criteria increased significantly. Three important centres of land use (commercial, industrial, and residential) were also created through clustering the results. These centres were slightly different from centres of the city plan zones. Additional land uses in 2030 were predicted using a nonlinear autoregressive neural network with external input. Three scenarios were used for allocating these additional land uses including sustainable development, government policy, and business-as-usual. Future land use allocation in 2030 found that the sustainable development scenario showed better performance compared to government policy and business-as-usual scenarios.

Highlights

Unsustainable city forms have been perceived as a source of environmental problems [1,2]
The Pareto-front optimal set was used in the current study to ensure that all criteria participated inTLhUe oPpatriemtois-fartoionnt opproticmesasl. sFeitgwuraes6ushedowins tahePacruertroe-nfrtosnttuodpytitmo aelnsuetre(ctohnattaainlledcrimteorriae pthaarnticsiipxatyted in LwUeigohpttriamtiiossa)titohnatpalrsoocceosns.taFinigsuwreig6hsthedowrastioa fProamrettoh-efrsounrvteoyp. tSiimncaeltsheetw(ceoignhtateinderdatimo ofrroemthsaunrvseiyxty wewigahst trhaetimose)mthbaetr aolfsPoacroentotaoipntsimwaeligsehtt,etdherraetiwoafsronmo dthoemsiunravnetyc.riStienricoenthinetwhiesigrahttieodanradtisouffriocmienstufrovrey simulation
One criterion score was increasing while the others were decreasing

Summary

Introduction

Unsustainable city forms have been perceived as a source of environmental problems [1,2]. Many sustainable urban forms have been proposed These include (i) the compact city; (ii) the eco city; (iii) neo-traditional development; and (iv) urban containment [2]. Based on the compact and eco city models, four criteria were chosen, compactness, compatibility, dependency and suitability, to determine the sustainability score for the city when optimising urban land use (LU). These criteria are similar to those of a previous study on current LU allocation [9]. Difficult to change an existing city form with newly optimised form, some activities dealing with urban structure and land use pattern can be implemented to achieve sustainable urban form as in the current study. The optimisation process accounted for future LU

Objectives

Results

Conclusion