Characteristics of Regional City Connection's Spatial Pattern Based on Intercity Passenger Traffic Flow in Pearl River Delta
利用城际客运交通流数据，从城市和功能区两个尺度分析珠三角城市联系的空间格局，发现联系强度呈中心-外围、东西岸及三子区域的不均衡变化，方向总体指向广州和深圳，节点呈梯度层级和多中心分布。
Based on the data of intercity passenger traffic flow,this paper analyses the spatial pattern of Pearl River Delta's city function connection in two scales of city and functional region.It is found that the connection intensity shows imbalanced spatial variation in center area and peripheral area,east coast and west coast,and three subregions;the connection direction demonstrates overall spatial pattern of orienting to Guangzhou and Shenzhen,as well as partial discontinuity;the connection nodes suggest spatial structure of gradient hierarchy and polycentric distribution.Besides,nowadays PRD is in the phase of economic structure transformation and upgrading,facilitating the implementation of regional integration policy,and rapid construction of regional transport infrastructure,which exert great impacts on the property,distribution and corridors of resource flow in the region.