Research On Comprehensive Strength Evaluation And Spatial Evolution Of Shipping Centers Along The Yangtze River Economic Belt

The Yangtze Economic Belt is one of the most important strategic development areas of the new era and is highly valued in the central part of the State Council and is an important driving force for economic and social development in the region.The Yangtze River water supply is an important part of the integrated transportation system of the Yangtze Economic Zone,and it plays an important role in the high economic development of the Yangtze Economic Zone.With the development of the period,the shipping center is not only important promotion of regional economic development but also the core of the modern shipping system.The integrated level of the marine center affects the superiority game of the Yangtze River waterworks.Therefore,the development of the marine center of the Yangtze Economic Belt is actively promoted to accelerate the construction of the new development model,and to promote the "strong shipping" aggressively,and the Changjiang economic belt has the important strategic significance in promoting the high quality development of the Changjiang Economic Belt.This paper firstly defines the concept and connotation of the comprehensive strength of shipping center,and qualitatively analyzes the influencing factors of the comprehensive strength of shipping center.Secondly,the development status and challenges of the three shipping centers along the Yangtze River Economic Belt are analyzed.Then,based on the "diamond model",the comprehensive strength index system of shipping centers along the Yangtze River Economic Belt is constructed.Statistical data of 11 major port cities within shipping centers along the Yangtze River Economic Belt during 2010-2019 are selected as research samples.The entropy weight TOPSIS method was used to determine the weight of each index,and the comprehensive strength level of the shipping centers along the Yangtze River Economic Belt and the main port cities were calculated.Finally,the spatial correlation and evolution characteristics of the comprehensive strength of shipping centers along the Yangtze River Economic Belt were explored by constructing the geographical distance matrix and using the exploratory spatial data analysis method.As a result,there was a big difference between the overall strength level of the Yangtze Economic Belt shipping center in 2010-2019,and the downward slope was lowered.The average total strength of the calf in the Shanghai international shipping center accounts for more than half of the Yangtze Economic Zone,but the difference between Wuhan and Chongqing is small.In Shanghai,Suzhou and other major port cities,such as Wuxi,South Korea and Wuxi,are among relatively large levels of 11 large port cities in the Yangtze Economic Zone.Among the large and large port cities of Wuhan Yangtong shipping center,the level of the total power of Wuhan was relatively high,and the overall ability of Yangchang and Jingzhou was next to Wuhan,and the integrated ability of yellow stone was the lowest in the shipping center.The difference in the overall ability of the upper port city of Chongqing Changjiang Shipping Center is evident,and Chongqing occupies an absolute core position.Global spatial correlation of the overall power of the Changjiang Economic Belt shipping center is not remarkable.The local spatial distribution is characterized by a low-and low-low integration feature,and the high value accumulation of the Shanghai international shipping center and the low value accumulation at the upper reaches of the Yangtze River,Chongqing,is relatively stable.