Determining the sphere of influence of Khorramabad city in Lorestan province, by Huff method

 There has always been a reciprocal relationship between the city and the surrounding villages, which in any socio-economic system or formulation, this reciprocal relationship takes a special form. Studying and examining the relationship between the city and the village is one of the most important issues in spatial and regional planning. Therefore, this study has analyzed the determination of the sphere of influence of Khorramabad city in Lorestan province with Huff method; The research method in the present article is descriptive, analytical and the method of collecting library and field information and analyzing and analyzing information by Huff method. The research findings indicate that in this research, the influence of villages in Khorramabad city of Lorestan province in four parts Markazi, Papli, Zagheh, Biranvand have been studied. The total mean value for the physical index is 0.13, which is equal to the same value for the four parts studied. Regarding the social index with a total average of 0.11 and in the central part with an average of 0.10 the lowest value and in the slums and papal sections. Biranvand with an average value of 0.11, also the total average value for the service index is 0.14 that the average service index in the slum sector with 0.17 is the highest value and in the central sector with 0.13 the lowest value and in the papal sector with 0.14 and Biranvand sector 0.15 Keywords: sphere of influence, urban-rural interaction, Khorramabad city, Huff method