Research on development mode of northeast regional tourism network with city as the node

On the basis of analyzing joint development status of northeast regional tourist cities, the author takes core-periphery theory put forward by American regional planning expert J. R. Friedmann as the basis of theoretical research, puts forward valuing urban functions in northeast regional tourism cooperation, takes the cities composed of capital city, non-capital central city, rich tourism resources city, resource exhausted city, and closely foreign-related coastal or border city, etc. as the node, puts forward the development mode of northeast regional tourism network from point to line and line to area on the basis of considering tourism factors comprehensively, so as to promote rapid formation of northeast tourism circle, and speed up the step of barrier-free tourism construction in Northeast China.