Researches on Urban Tourism Spatial Mutual Effects in the Yangtze River Delta

This paper adopts calculating formula analogous to the law of gravity in physics to measure intercity tourist economic affiliation intension,which is used to reflect tourism economic radiant abilities of central tourist city to peripheral regions and the growth circs of regional intercity tourism networks in the Yangtze River Delta.This paper fabricates a model to measure non-central cities' tourism economic subjection-degree relativing to six tourist central cities as Shanghai,Nanjing,Hangzhou,Suzhou,Wuxi,Ningbo.Researching result of this paper indicates that Nantong is part of Shanghai tourism economic district,not part of Nanjing tourism economic district;Suzhou,Changzhou,and Wuxi can be grouped into one Su-Xi-Chang tourism economic district;Zhenjiang and Yangzhou is part of Nanjing tourism economic district,not part of Su-Xi-Chang tourism economic district;Jiaxing is part of Shanghai tourism economic district,not part of Hangzhou tourism economic district;Huzhou is part of Hangzhou tourism economic district,not part of Shanghai tourism economic district;Shaoxing is part of Hangzhou tourism economic district,not part of Ningbo tourism economic district;Zhoushan is part of Ningbo tourism economic district;Wuxi,Suzhou,and Ningbo have a more close tourism economic subjection degree relativing to Shanghai,and part of these area can be categorized into Shanghai district;Ningbo has a more close tourism economic subjection degree relativing to Hangzhou,and part of these area can be categorized into Hangzhou district;Nantong and Jiaxing have a more close tourism economic subjection degree relativing to Su-Xi-Chang,and part of these area can be categorized into this district;Taizhou has a more close tourism economic subjection degree relativing to Nanjing,Shanghai,and Su-Xi-Chang,and part of these area can be categorized into these districts respectively.