the Analysis of the spatial distribution of critical applications from the perspective of passive defense in the metropolis, Iran

In most wars in the world today occurs on both sides of the war to the enemy to strike and destroy the special account of the cause of the crash provide. Today, especially in large cities and metropolitan urban battle space, according to the passive defense as a solution to reduce vulnerability and increase power is necessary.The Special One way to protect land uses , this application is distributed to the right place. metropolis Ahvaz city due to the geo-strategic , geo Economic and geo Calcher a special place , a place of recognition of non-defense after the establishment of specific urban mining standards in place , the location - proximity to critical applications , as well as the spatial distribution of land uses in the metropolitan Iran have been studied.
IntroductionAhvaz metropolis of modern life as the center of the oil and gas industry in the southern region of nearly half a century ago and one of the major metropolises that have the potential to be attacked. Due to the passive defense because the city has been neglected , it also has political importance ( centrality of Khuzestan province , north -south highway, transit , etc.), Security ( near the western border of the country , there are separatist groups , history of aggression , etc.) , economic ), a factory , several strategic industries such as steel , gas , oil , sugar , etc.) , socio-cultural ( diversity tastes and ideas and sensitivity to ethnic and linguistic diversity , etc.) isAnd the upper part of the influence and impact nationwide plays, So from the perspective of urban passive defense in the form of defensive necessity of the use of passive defense , urban planning , with emphasis on distribution and use proper layout critical to Metropolis Iran is inevitable. Finally, this study seeks to answer the following questions:- Zoning Risk critical applications in metropolitan Ahvaz how?
- Vital status of land adjacent to the other in terms of what level of compatibility are passive defense?
- What are the risks of Ahvaz most metropolitan areas ?
methodology This research is based on the objective of development ( applied ) and the nature and methodology of the approach is descriptive - analytic and research approach of the place where the method of quantitative and qualitative applications such as Arc GIS and Excel is used. In this study, the entire metropolis Ahwaz is considered critical applications. After identifying the critical applications in five categories ( five applications ) can be divided and then in ARC GIS layers are prepared . The research focus is on the following A) Assessment of location - proximity to critical applications
B) examine the spatial distribution ( consistency and density ) critical applications
In line with the objectives of the present study is a linear process in the form of steps as follows:Step One: Prepare vital Land use Layer
Second step : correction and change layers and maps prepared Step Three: standardization of criteria mapat
Step Four: Integrating Maps Maps proximity factor and making use of five
Step Five : A critical assessment from the perspective of the land use adjustment of passive defense
The establishment and use of urban spaces are classified on the basis of a defense perspective , it should be robust measure of proximity.In this regard, it can be in the form of passive defense compatibility matrix to evaluate the logic of urban land intensive use. From the perspective of two or more adjacent passive defense , besides being annoying and should not prevent each other , they must also create vulnerabilities. It should also trigger the vicinity of the incident and the increasing risk of damage but should complement each other and prevent the spread of risk and vulnerability.
ConclusionThe outcome of this research was found near the 69% A total of 58 % of the critical Land use 40 Land use adjacent to a totally incompatible, Due to this fact in the event of an accident it also increases the vulnerability of the area, also5 Land use relatively adverse conditions , only 1 of 12 Member relatively consistent and critical account of the situation is fully compatible with existing applications in the defined range. This indicates an incorrect location for critical applications are compatible with neighboring uses, So if attacked, taking account of the vulnerability of life and property will be more, For compatibility with the existing range of vulnerabilities ,, residential and other uses will transfer, and the amount of human and financial costs in the form of a stepped increase. In examining the distribution of critical applications , each land use 's position relative to other members of the special life were studied, This means that the number of critical applications and residential area in the space designated for each critical use , density and distribution will be determined. A total of 14 Members to the special account within the desired density is a totally inappropriate and a distance of 400 meters from the sanctuary for the desired application does not complyAnd each of these critical applications or other sensitive located in the neighborhood of at least 3 Land use critical density formed entirely inappropriate, improper distribution of critical applications leads to a special account of the risks to the land use picks from the passive defense is at a point, the result is high vulnerability of these vital centersand a desire to attack the enemy's enemy and increases the likelihood of success. Also a member of the relatively poor 12 , 19 and 13 land uses account in relatively good condition are quite good. Essentially passive defense approach is efficient urban management in crisis situations and facilitate the deterrence effects of the crisis and its negative result.