Research On The Spatial Differentiation Of The Northeast City Tourism Economic Under The Impact Of Harbin-Dalian High-speed Railway

China is in the era of rapid development of high speed transportation,the apperance of the high speed rail as the representative of the rapid transportation greatly reduces the time cost of travelers,and made city-wide,regional development integration trend obvous.Compared with the general railway,the high-speed railway highlights the function of the passenger dedicated line,the role of high-speed railway on regional development mainly through the impact of passenger flow to achieve.Therefore,the tourism industry is generally affected by it.Harbin Dalian high-speed railway officially opened on December 1,2012.As a passenger traffic artery running through the core area of Northeast China,its opening will enhance the accessibility of the northeast region and so it has an important significance to optimize the Northeast passenger transport structure and regional tourism spatial network.Firstly,based on the accessibility of urban tourism transportation,this paper investigates the spatial influence of tourism transportation network in Northeast china under the impact of Harbin-Dalian high-speed railway;Secondly,through the establishment of tourism economic linkage model,From the formation of high speed rail belt;the spatial differentiation of tourism commuting circle;polarization effect of regional tourism space to analyze the spatial effect of the northeast city tourism economic linkage under the impact of Harbin-Dalian high-speed railway;Finally,this paper first separate the market potential model into two models:supply and demand market potential models depend on supply and demand factors.to deeply analysis of the current situation of tourism supply and demand market in Northeast china.The result showed: first,the Harbin-Dalian high-speed railway brought the time compress effect.and strengthened the Tourist traffic network and the relation of the Tourism economy,the whole zone compassed by about 2 hours,the change between the city and outside province city is more clear than between the city and inside province city,the degree of the change is relate to the distance between the city and the railway,the closer the distance,the more obvious the change,the change in the three provinces in northeast area ismore obvious than the eas tof Inner Mongolia,second,cities along the Harbin-Dalian high-speed railway obtained greater kinetic energy in the tourism development and accelerated the formation of Harbin Dalian High-speed Rail tourism belt.they gain a real benefit as fast food tourism,one day tour and two days tour develop fast,but for the remote cities,therailway effect the two days tour and seven days tour,Northeast tourism should take the high-speed rail as an opportunity to carefully develop the tourism products along the route,accelerate the integration of tourism and cooperation,create a new image of the northeast tourism.High-speed Rail made the number of suitable for a tour and the two tour spots rapidly increased,it filt the blank of one day market and expend the range of two days market,and last it formed the pattern of High-speed Rail as axis,center cities as the core,spread from the both sides of the high-speed railway and around the center cities by a day,two days,seven days for the tourism characteristics.then present Circle + axis strip regional tourism spatial form.The alteration of the potential of tourism market supply and demand presented the phenomenon that off high iron decay.Stimulating market supply and demand to gather in the high-speed railway line,led to the formation of high iron Tourism Economic Zone,at the same time,the northeast tourism spatial distribution characteristic is more obvious.And this paper thinks:it is necessary to rely on high-speed rail and other fast transportation mode and tourism hub city,to improve the commuter network,and promote the optimization and docking of the regional tourism supply and demand space network.