### The spatial variation of age structure indexes (total independence ratio and aging index) between Ramadi and Falluja cities for the period from 1997 to 2016 .

#### Abstract

The study aims to explore the spatial variation of age structure indexes namely, total independence ratio and aging index for the population in Ramadi and Falluja cities for the period from 1997 to 2016. It consists of three parts, the first studies the population in Ramadi and Falluja cities in terms of the development in their population, its rate of growth, environmental distribution (urban – rural) and aging structure. The second part focuses on the aging index in these two cities regarding the total aging index, aging index of the urban population and aging index of the rural population. The third part deals with the total independence ratio in the two cities. It tackles the total independence ratio, the total independence ratio of the urban population and the total independence ratio of the rural population.The findings of the study show that the change in the aging index was less than (1%) and its path was not altogether positive from 1997 to 2016, rather it was negative. This was due to the low percentage of aged people in 2016. The increase in this percentage was due to the remarkable decrease in the percentage of young people number in the same year, not as a result of the effect of the percentage of aged people. As for the variation, it did not exceed (1%) in the urban of rural areas for the whole population. The findings also show a decrease in the total theoretical independence ratio in the two cities, it was more than (30%) in the urban areas and more than (40%) in the rural areas as well as the whole population. This was due to the decrease in the percentage of the young and aged people and the increase in the percentage of the medium aged group. The independence ratio in the rural areas was higher than that in the urban areas. Moreover, the variation between the two cities was less than (5%) in the rural, urban areas and the total number of the population.

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