| The study of spatial structure of tourism flow and its application in tourism development have been the core of tourism geography and the key research object of tourism science.In recent years,it has attracted much attention from scholars both at home and abroad,and the research results are quite fruitful.In the process of modern urbanization in China,tourism has become a new engine to promote the transformation and upgrading of the city.At the same time,with the arrival of the era of mass tourism and individual tourism,the popularity of the Internet,Modern tourism activities and the Internet have been increasingly closely linked,resulting in a large number of tourism big data,which provides a new opportunity for the study of the spatial structure of urban tourism flows.This article takes Nanjing domestic individual tourist flow as the research object,and takes the Nanjing domestic individual travel’ itinerary in Mafengwo site at 2010,2012.2014 and 2016 four period as the main source of data with the help of Arcgis and UCINET,based on the dynamic perspective,from the two aspects of spatial distribution and network structure to discuss Nanjing domestic tourism spatial structure evolution characteristics.First of all,from the 3 angles of node spatial distribution,spatial pattern and the center of tourism flow to discuss Nanjing individual tourist flow distribution’s evolution characteristics,the results show that the tourism nodes concentrated in the core region and the secondary core area,scattered distribution in the edge area;The spatial pattern has obvious characteristics of hierarchical circle differentiation and shows a pattern of cross banded distribution;The center of tourism flow focus on the Xuanwu district,have the trend of migration from the northeast to the southwest to the Northeast,the position of the center of gravity tends to be stable.Then,discusses the Nanjing individual tourist flow network structure evolution,from the individual nodes and the whole network 2 angles.The results show that the node distribution is extremely uneven,most nodes need the core nodes’ connection,through regression analysis,the nodes are divided into "classic","potential" and "borderline" 3 types;The network structure has obvious structural layering.The nodes in the fringe area need the nodes in the core area to connect.There are 3 attractions system closely related to each other.They are the Confucius Temple-Presidential palace system,Dr.Sun Yat-sen’s Mausoleum-Ming Xiaoling Mausoleum system and Nanjing University-Xuanwu Lake system.In the network,the external flow is mainly through the core scenic spots to contect,leading the flow of the whole system,and the internal flow is mainly carried out through the flow of the main scenic spots and the secondary scenic spots,which dominates the internal flow of the system.Finally,discussing the factors which influence the spatial pattern of the tourist flow in Nanjing.It mainly depends on the tourism nodes’ tourism resource,the level of transportation access,and the level of regional economic and cultural development.The corresponding suggestions are put forward in order to provide reference for the tourism development and future construction of Nanjing.This study can not only perfect the related theories and methods of tourism flow research,but also has practical significance on the marketing of tourism destination,the design of tourism products and routes,the regulation and control of tourism flow,the optimization of spatial structure of urban tourism system,guiding the coordinated development of urban function and tourism spatial structure in Nanjing scientifically,promoting the overall image and competitiveness of urban tourism. |