Evolvement Of Temporal-spatial Pattern Of Latent Domestic Emissive Ness In Urban Agglomerates In The Middle Reaches Of Yangtze River

In 2015,the "The development planning of urban agglomeration in the middle reaches of the Yangtze River" has been officially risen to a national planning,which indicates that the development of the middle area of China reaches to the Yangtze River,as an important node of the Yangtze River economic belt,is supported by the national government level.Therefore,the urban agglomeration in the middle of the Yangtze River has got a new development opportunity.However,the three provinces of urban agglomeration in the middle reaches of the Yangtze River have been affected by administrative division,industrial competition and traffic inconvenience for a long time.The process of integration has been slowed forward,which has greatly hindered the further development of the whole society.Tourism is a relatively strong industry of"positive externality",and as the pilot industry of the urban agglomeration integration,tourism will contribute to the comprehensive promotion of urban agglomeration in the middle reaches of the Yangtze River.This paper makes an in-depth analysis on the spatial differences and evolution of Latent Domestic Emissive ness in urban agglomeration,so as to provide some valuable references for the coordinating development of the whole regional tourism and the realization of the social economic integration.This paper takes 31 cities as the basic research unit in the middle reaches of the Yangtze River,and constructs evaluation index System of Latent Domestic Emissive ness according to the level of economic development,transportation status,information communication status,population size and other aspects of 15 sub-indicators.Based on the entropy method,the Latent Domestic Emissive ness of urban agglomeration in the middle reaches of the Yangtze River is evaluated synthetically.Combined with cluster analysis,the Latent Domestic Emissive ness of 31 cities are classified into five different types.On the basis of the research,through the analysis of the coefficient of variation of urban agglomeration in 2004,2009 and 2014,the paper discusses and works out the evolution situation of the overall and local pattern of Latent Domestic Emissive ness.The results show that:1)economic development,such as residents' income level,communication conditions are the main factors that cause the spatial differences of the urban agglomeration in the middle reaches of the Yangtze River,among which the traffic elements are particularly prominent;2)according to the level of Latent Domestic Emissive ness,the 31 cities could be clustered into five types as extremely strongest,strong,average,relatively weak and weak areas.3)Wuhan and Changsha are the extremely leading areas of Latent Domestic Emissive ness of urban agglomeration in the middle reaches of the Yangtze River,because of their leading level of economic development,high scientific technical power and developed external relation capability;4)the Latent Domestic Emissive ness of east and west of urban agglomeration is remarkable,and the pattern of "strong in the west and east is weak" is relatively stable;5)from 2004 to 2014,the spatial disparity of Latent Domestic Emissive ness of urban agglomeration gradually expanded,but the process of expansion has been slowed down;6)the spatial difference of Latent Domestic Emissive of Wuhan megalopolis,Xiangjingyi city zone,and the Great C-Z-T urban agglomeration is increasing,while the Poyang lake city group is shrinking;7)the spatial difference of Latent Domestic Emissive of Wuhan megalopolis and XiangJingYi city zone is much higher than the Great C-Z-T urban agglomeration and the Poyang Lake city group;8)the average level of Latent Domestic Emissive in the Great C-Z-T urban agglomeration is the highest among the urban agglomeration in the middle reaches of the Yangtze River,while the Poyang Lake city group is the lowest.In view of the problems existing in the urban agglomeration of the middle reaches of the Yangtze River,this paper puts forward some countermeasures and suggestions to coordinate the spatial differences of regional travel,in order to promote the tourism industry developing integration.