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《Science of Surveying and Mapping》 2008-05
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Characterizing the spatial scale effect of urban growth cellular automata model

YIN Chang-lin①②,ZHANG Hong-hui①②,YOU Sheng-jing②,CHEN Guang-hui①②,LIU Qin-zhi③(① College of Information and Physics Engineering,Center-South University,Changsha,410083,China;② Changsha Urban Planning Information Service Center,Changsha,Hunan,410013;③ College of Continuing Education,Guizhou University,Guiyang 550001,China)  
An approach commonly used in geography and urban growth simulation is based on cellular automata theory and the GIS framework.However,the behaviour of cellular automaton(CA) models is affected by uncertainties arising from the scale of data sources used as model input.The scale effect of CA models has not been sufficiently addressed in the research literature.Taking the downtown areas of changsha city as study area,the objective of this study is to analyze the scale effect of a GIS-based CA urban growth model using input data of different scale.The study results show that the model managed to perform well and produce realistic urban form only up to specific range of scale.Thus,the selection of scale to represent urban system under consideration has to be undertaken with care,in order to ensure that the output produced maintains the overall accuracy of the model and morphology of urban areas.
【Fund】: 国家自然科学基金项目(40371020)
【CateGory Index】: P208;TU984
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