The Quantitative Analysis of Big Scale Supermarkets Accessibility and Trade Areas Delimitation based on GIS in Central Shangha

Recently most relative quantitative modeling study on retail location did not simultaneously consider those factors including traffic network,traffic grade,store attraction and competition based on GIS.This paper aims at these shortages and attempt to integrate above factors and make quantitative analysis about large scale shops based on accessibility method,Huff model and GIS technique.This study takes the large scale supermarket of Shanghai central city for example.On one hand,make use of trip cost by GIS analysis to investigate quantitatively supermarket accessibility and visualize the results.On the others,simulate delimitating market area based on trip cost analysis and Huff model which can make received market area more close to actual instance and discuss differences and the same points between market area features of two methods.The result indicates that accessibility of large scale supermarket in Shanghai central city is good,the west of city is better than east.Trade areas between inner loop and middle loop are smaller.Market size near out loop and inside inner loop is greater.Market scale of between inner loop and middle loop is smaller.There is polarization among shops' market areas and size.The above characteristic shows that the intense competitive market area coexists with the vulnerable competitive region.