RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2007, Vol. 16 >> Issue (2): 265-265.

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SPATIAL DISTRIBUTION IN POPULATION STATISTICS IN RELATION TO FLOOD PREVENTION AND RESCUE—A CASE STUDY IN FUYU COUNTY

DU Guoming1,2, ZHANG Shuwen1   

  • Received:2006-01-05 Revised:2006-04-20 Online:2007-03-20

Abstract:

Accurate information of population distribution is the important foundation for preventing flood disaster and the rescue when flood occurs. In combination of population statistics with RS data, this paper analyzed the spatial distribution in population statistics and a pattern of population distribution was obtained by using GIS. Two major problems were analyzed in this paper, as how to obtain information of residential type, area and position, and what is the relation between residential type, area and position and amount of population. On the basis of geographical sense and mathematical sense, this paper used the model of allometric growth of urban populationarea, and a model of rural and urban populationarea was generated. Then, by studying Fuyu County as a case, using 1:50 000relief map as assistant data, building up classification system of residential points, and using ETM images to distill information of residential area, the inversion model of population distribution was set up, and the vector data of population distribution were obtained on the basis of residential points.

Key words: spatial distribution, population statistics, flood, inversion of RS

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