| The development and evolution of tourist destination is one of the hot topics in the study of tourism geography.The research on it is not only helpful to sort out the context of the development and evolution of tourist destination,to explore the inherent law of its development and evolution,but also helpful to reveal the existing problems in the process of tourism development and evolution,and to take effective measures to promote the healthy and sustainable development of regional tourism.However,most of the previous studies are difficult to break away from the shackles of the classical spatial structure theory,and the research perspective is single,and the research method is lack of innovation,so it is difficult to truly reflect the actual situation of regional tourism development.However,tourism field intensity can reflect the impact of the diffusion of tourism economic development,which is an effective method and means to study the spatial pattern of tourism destination.Based on this,this paper takes 26 cities of Yangtze River Delta urban agglomeration as the research object,according to the basic paradigm of "pattern-process-mechanism" of geography research,based on principal component analysis(PCA),reachability technique,improved tourism field intensity model,spatial variation function and geographical detector model,this paper studies the evolution of spatial and temporal patterns of tourism field intensity and its influence factors in the Yangtze River Delta urban agglomeration region from 2000 to 2016.The results show that:? The urban tourism comprehensive strength of Yangtze River Delta urban agglomeration shows the characteristics of differentiation and remarkable,but this kind of difference shows the trend of gradually narrowing,and is developing towards the direction of optimization and equilibrium;? With the rapid development of traffic roads,the overall level of regional traffic accessibility has been significantly improved,and formed an obvious "center-periphery" structural characteristics;? In the three study periods of 2000,2007 and 2016,the regional tourism field intensity showed different spatial pattern characteristics,but on the whole,it formed the pattern with "Shanghai as the core growth pole",mainly along the "Hefei-Nanning-Shanghai-Hangzhou-Ningbo " line spread out.The spatial pattern changed from "Z" in 2000 to multi-layer pattern in 2007,and finally to "octopus" pattern in 2016.The overall pattern of regional tourism field intensity space is becoming more and more complex,the connection degree of tourism economy is strengthening constantly,and the process of regional tourism integration is advancing rapidly.? From the three study periods of 2000,2007 and 2016,we can find out that the average,maximum and minimum values of the tourism field intensity of each city all showed varying degrees of increase.Among them,the change range of the average value of tourism field intensity is larger than that of the maximum and minimum value,which indicates that the overall level of tourism field intensity in the Yangtze River Delta urban agglomeration region has been significantly improved.In addition,the types of tourism field intensity in the three study periods are also changing from the lower field to the higher field.The area of the lower field is gradually reduced,and the area of the middle and high field is gradually expanding.The changes in southern Jiangsu,Shanghai,Taihu Lake and other areas are more obvious than that of in other areas,tourism field intensity has always been in a higher level;? From the point of view of spatial variability of tourist field intensity,from 2000 to 2016,the continuity and self-organization of the strong spatial pattern of regional tourism in the Yangtze River Delta urban agglomeration is getting better and better,and the randomness of spatial differentiation is continuously decreasing,also the structural disparities caused by autocorrelation begin to appear.In general,the spatial evolution of regional tourism field intensity in the Yangtze River Delta urban agglomeration has obvious regularity.While maintaining a stable internal structure,the spatial distribution form gradually moves closer to a better-developed region,which leads to a greater differences in regional tourism strength between the internal and external edges of the region;? The evolution of the spatial pattern of the regional tourism field intensity in Yangtze River Delta urban agglomeration is the result of a combination of factors.In general,the degree of traffic superiority,the level of tourism industry development,the level of regional economic development,the endowment of tourism resources and the investment of the tertiary industry are the main factors affecting the evolution of the spatial pattern of regional tourism field intensity.Among them,the degree of traffic superiority is an important factor affecting the evolution of regional tourism field intensity.? Integrating the study of the whole thesis,and combining with the reality of tourism development in Yangtze River Delta urban agglomeration,it is suggested that the tourism spatial development pattern of "one core,four circles and four belts"should be adopted with the development pattern of "point belt axis,axial belt plane".This study is not only helpful to reveal the differences of regional tourism development in Yangtze River Delta urban agglomeration,but also to explore the influencing factors behind its development and to construct a general mechanism to influence the evolution of regional tourism spatial pattern.Take effective measures according to local conditions to promote the coordinated development of regional tourism in the Yangtze River Delta urban agglomeration,reduce the differences in regional tourism development,and effectively improve the overall level of tourism development of urban agglomeration,and further promote the healthy and sustainable development of urban tourism,as well as,further enrich the theoretical system of tourism spatial structure. |
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