Investigating the geographical distribution of urban population in Khuzestan province with passive defense approach

Passive defense is a type of civil defense and refers to a set of measures that do not require warfare and by implementing it, it is possible to prevent financial damage to vital and sensitive military and civilian equipment and facilities and human casualties or the amount of these losses and casualties Reduced to a minimum. Passive defense measures include cover, dispersal, division and relocation, deception, location, announcement, survival, fortifications, camouflage, concealment, deceptive replicas, and secure structures. In this study, based on the results of the general population and housing census in 2016, the geographical distribution of the urban population of Khuzestan province with a passive defense approach has been investigated. The method of work in this research is a combination of documentary, descriptive and analytical methods and in it the comparison of the percentage of population in the center of the province with other cities in the province and the law of rank-size of Zipf has been used. The results showed that 33.55% of the urban population of Khuzestan province is located in Ahvaz. The results of the rank-size law model show that Ahvaz is the first city in the urban network system of Khuzestan province and the role of medium and small cities in the urban system of this province is very small.