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Article: Constrained Cellular Automata for modelling sustainable urban forms

TitleConstrained Cellular Automata for modelling sustainable urban forms
約束性單元自動演化CA模型及可持續城市發展形態的模擬
Authors
KeywordsCellular automata (單元自動演化)
Constraints (約束性)
Sustainable development (可持續發展)
Urban simulation (城市模擬)
Issue Date1999
PublisherScience Press (科學出版社)
Citation
Acta Geographica Sinica, 1999, v. 54 n. 4, p. 289-298 How to Cite?
地理學報, 1999, v. 54 n. 4, p. 289-298 How to Cite?
AbstractCellular Automata (CA) have attracted growing attention in urban simulation because of their capability in spatial modelling which is not fully developed in GIS. This paper discusses how cellular automata (CA) which is increasingly used in urban simulation can be extended and integrated with GIS to help planners in the search for sustainable urban forms. A constrained cellular automation is developed to produce optimal development patterns and thus reduce wasteful use of land resources. The cellular automation is built within a grid-GIS system to facilitate easy access to GIS databases for constructuring the constraints. The essence of the model is that constraint space is used to regulate cellular space. Local, regional and global constraints play equally important roles in affecting the modelling results. Agricultural suitability, available land resource and economic and population growth could be used as key constraints. The paper discusses how to combine these constraints in CA modelling to enhance the efficiency in using land resources. In addition, 'grey' cells are defined to represent the continuous degrees or percentages of urban land development during the iterations of modelling for more accurate results. The model can be easily controlled by the parameter k using a power transformation function for calculating constraint scores. The CA model can be used as a useful planning tool to test the effects of different scenarios of urban development. The protection of valuable agricultural land is important in many developing countries where cities are growing rapidly. In China, some cities are expanding without properly considering land suitability and environmental impacts. Recent rapid land development has been accompanied by the loss of large amount of agricultural land. This study demonstrates that CA can be used to simulate urban development based on constraints that reflect our environmental concerns. The objective is to produce sustainable urban forms as alternatives to the existing development patterns. The study has suggested that CA can be used as a useful planning tool to model urban development under complicated and changeable environmental factors.
單元自動演化CA可以大大增強GIS的空間模型能力,在國外被越來越多地應用于城市發展演化過程的模擬。本文探討了如何通過CA與GIS的結合來進行可持續土地發展規劃的新方法。提出了基于約束性的CA模型,具體分析了局部、區域以及全局約束性對CA模型結果的影響。并將灰度的概念引進CA模型中來反映狀態連續的變化,克服常規CA模型的缺陷。將該模型應用于珠江三角洲地區來獲得合理的城市發展空間布局,取得了較好的效果
Persistent Identifierhttp://hdl.handle.net/10722/89921
ISSN
2015 SCImago Journal Rankings: 0.447
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Xen_HK
dc.contributor.authorYeh, AGOen_HK
dc.date.accessioned2010-09-06T10:03:26Z-
dc.date.available2010-09-06T10:03:26Z-
dc.date.issued1999en_HK
dc.identifier.citationActa Geographica Sinica, 1999, v. 54 n. 4, p. 289-298en_HK
dc.identifier.citation地理學報, 1999, v. 54 n. 4, p. 289-298-
dc.identifier.issn0375-5444en_HK
dc.identifier.urihttp://hdl.handle.net/10722/89921-
dc.description.abstractCellular Automata (CA) have attracted growing attention in urban simulation because of their capability in spatial modelling which is not fully developed in GIS. This paper discusses how cellular automata (CA) which is increasingly used in urban simulation can be extended and integrated with GIS to help planners in the search for sustainable urban forms. A constrained cellular automation is developed to produce optimal development patterns and thus reduce wasteful use of land resources. The cellular automation is built within a grid-GIS system to facilitate easy access to GIS databases for constructuring the constraints. The essence of the model is that constraint space is used to regulate cellular space. Local, regional and global constraints play equally important roles in affecting the modelling results. Agricultural suitability, available land resource and economic and population growth could be used as key constraints. The paper discusses how to combine these constraints in CA modelling to enhance the efficiency in using land resources. In addition, 'grey' cells are defined to represent the continuous degrees or percentages of urban land development during the iterations of modelling for more accurate results. The model can be easily controlled by the parameter k using a power transformation function for calculating constraint scores. The CA model can be used as a useful planning tool to test the effects of different scenarios of urban development. The protection of valuable agricultural land is important in many developing countries where cities are growing rapidly. In China, some cities are expanding without properly considering land suitability and environmental impacts. Recent rapid land development has been accompanied by the loss of large amount of agricultural land. This study demonstrates that CA can be used to simulate urban development based on constraints that reflect our environmental concerns. The objective is to produce sustainable urban forms as alternatives to the existing development patterns. The study has suggested that CA can be used as a useful planning tool to model urban development under complicated and changeable environmental factors.en_HK
dc.description.abstract單元自動演化CA可以大大增強GIS的空間模型能力,在國外被越來越多地應用于城市發展演化過程的模擬。本文探討了如何通過CA與GIS的結合來進行可持續土地發展規劃的新方法。提出了基于約束性的CA模型,具體分析了局部、區域以及全局約束性對CA模型結果的影響。并將灰度的概念引進CA模型中來反映狀態連續的變化,克服常規CA模型的缺陷。將該模型應用于珠江三角洲地區來獲得合理的城市發展空間布局,取得了較好的效果-
dc.languagechien_HK
dc.publisherScience Press (科學出版社)en_HK
dc.relation.ispartofActa Geographica Sinicaen_HK
dc.relation.ispartof地理學報-
dc.subjectCellular automata (單元自動演化)en_HK
dc.subjectConstraints (約束性)en_HK
dc.subjectSustainable development (可持續發展)en_HK
dc.subjectUrban simulation (城市模擬)en_HK
dc.titleConstrained Cellular Automata for modelling sustainable urban formsen_HK
dc.title約束性單元自動演化CA模型及可持續城市發展形態的模擬-
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1936-0851&volume=54 &issue=4&spage=289&epage=298&date=1999&atitle=Constrained+Cellular+Automata+for+Modelling+Sustainable+Urban+Formsen_HK
dc.identifier.emailYeh, AGO: hdxugoy@hkucc.hku.hken_HK
dc.identifier.authorityYeh, AGO=rp01033en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0033490590en_HK
dc.identifier.hkuros52806en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033490590&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue4en_HK
dc.identifier.spage289en_HK
dc.identifier.epage298en_HK
dc.publisher.placeBeijing (北京)en_HK
dc.identifier.scopusauthoridLi, X=34872691500en_HK
dc.identifier.scopusauthoridYeh, AGO=7103069369en_HK
dc.customcontrol.immutablecsl 140922-

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