Temporal Referencing in a Small-Area Information System: Monitoring Land Annexation in Edmonton, Canada, 1982-1989
Abstract
Measurement of multiregional demographic change is presently not supported by a structured conceptual framework other than the traditional cohort survival method. Traditional demography, however, is not suited for the measurement of change in geographic multitudes of small areas, such as neighborhoods or census tracts throughout a city. One of the clearest, albeit not sole, manifestations of this inadequacy is in the case of annexation of exurban land by a municipality. Geographic information systems, on the other hand, seem to constitute overall descriptors for multitudes of small areas, even under conditions of annexation. G.I.S. descriptors, however, do not usually possess a temporal mode. A demographic reference system proposed recently is aimed at providing such temporal mode by measuring change between two census dates in four robust demographic indicators, throughout a contiguous multitude of small areas. By monitoring demographic change throughout the multitude, the reference system constitutes a spatio-temporal mode of measurement. This has a significant meaning for the monitoring of demographic change throughout urban and exurban space, and by further implication, for land-use planning. In a case study, the introduced demographic reference system identifies spatial demographic trends between 1987 and 1989 in Edmonton that seem to echo a municipal annexation of exurban land in 1982.References
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