Dynamics of house state consolidation in Lima Metropolitan area: a cellular automata approach
Víctor Peña Guillén, Akinobu Murakami · Journal of The Japanese Institute of Landscape Architecture · 2017
The case for a model on the process of house consolidationUrban growth in large tracks of cities located in developing countries is characterized by informal urbanization and self-building processes.In Puente Piedra and Carabayllo districs, located in northern Lima metropolitan area, increasing population (Figure 1) and housing demand among the urban poor has been driving above-mentioned processes.In the northern fringe of the city, former agricultural land is being converted to residential purposes through subdivision of parcels.Land owners subdivide land and sell lots to householders who occupy it and start to self-build their houses into the new spatial pattern of housing blocks.Observed improvement of houses in Chillon valley (Figure 2) resembles the phenomena called house consolidation in areas where "low-income owners tend to build onto their dwelling environment gradually over a long period through a process called housing consolidation" 1) .To make it possible to understand above-mentioned process, it is important to devise an explanatory framework that permit us to replicate the process and to track the states along time and space.Structure and process are related elements in urban systems development 2) 3) 4) .Current investigation focuses on the relationship between structure and process and explore the dynamics of consolidation at the microscale of the block and its housing components.A study on the dynamics of consolidation process and its effects along time in the space of the block is suggested to provide insights on how the structure is being built at bottom level, and in turn how the changing urban structure is influencing the process as well.Studies of informal urbanization using computational models addresses the urban process at macro scale of city growth 5) , or the growing structure at microscale driving the irregular morphology of settlements 6) ; Batty (2008) suggest that micro-dynamic models clearly formulate a process-approach to the study of urban growth that provides "a coherent set of ideas about dynamics at the individual as well as collective level with clear links to the spatial morphologies generated" 7) .The contribution of current study is the inclusion of process oriented analysis at the micro-scale to make it possible to complement studies focused on patterns and morphologies; consolidation process has interesting spatial features リマ首都圏における住戸建築の変容ダイナミクス：セルオートマトン・アプローチ Dynamics of house state consolidation in Lima Metropolitan area: a cellular automata approach