3D Dynamic Representation for Urban Sprawl Modelling: Example of India’s Delhi-Mumbai corridor
Résumé
3D dynamic geo-visualisation models reflect changes in urban land areas and make a new contribution to the spatiotemporal representation of land use processes and the production of geographic knowledge. They facilitate understanding of the process of urbanisation and the resulting transformations of land use. The 3D dynamic visualisation model of the Delhi-Mumbai corridor in India illustrates how it is now possible to integrate the temporal, spatial dynamic and geographic dimensions of a process of land use transformation. Temporal methods of monitoring urbanisation are fundamental in anticipating future needs, and for land management and planning at national, regional or urban level. They can be used, for example, to highlight potential conflict zones that might result from the urbanisation of farmland or to monitor the environment and population. The limits of 2D/3D dynamic cartography are neither conceptual nor methodological. They consist in: (i) the size of geographic databases and the problems of management they entail, (ii) the quality of the data and the databases, which determines the accuracy of the representations and the potential for producing geographic knowledge. These models serve as decision aids in land development, forward planning or even geo-marketing and allow for better environment, population and land use management. Because they make it easy to read and understand the phenomena they represent, they provide excellent monitoring systems for non-geographers and the potential for their development is considerable.
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