| Regional traffic network system and economic system are of two interdependent and interactive complex giant system,the influence of traffic infrastructure on regional economic spatial pattern is significant,which is one of the main force of regional economic development and spatial expansion.With the acceleration of China’s regional economic integration,the speed and quality of county economic development is increasing rapidly,the demand for high quality transportation networks is growing intensely.How to enhance the competitive advantage and maintain the sustainable development of regional social economy in the highly competitive market environment,is a major issue faced by the current development.In this context,this thesis explores the coupling coordinated relationship between the development level of transportation network and the level of economic development in Poyang Lake Ecological Economic Zone,which is the basis to understand the traffic network infrastructure economic zone on regional economic development support and lead ability of Poyang Lake Ecological Economic Zone,is also an effective measure to prevent the excessive productive investment due to the construction of transport network facilities,at the same time,it also provides a reference for improving the regional transportation network and formulating the strategy of economic development.The thesis gives an example of the ecological economic zone of Poyang Lake,which presents a Quantitative analysis of the dynamic changes and rules of the coupling coordinated development between transportation and economy two systems by the construction of county transportation superiority and comprehensive economic strength evaluation index system,using the RAGA-PPC model to measure the ecological economic zone of transportation advantage degree and the comprehensive economic strength of Poyang Lake in 1995-2015.What’s more,according to the trafficsuperiority and the economic comprehensive strength,the different coupling coordinated development of two system are divided and the influencing factors of different types of coupling coordinated development are analyzed.On the basis of it,putting forward the corresponding development strategy.The main conclusions are as follows:(1)The traffic accessibility of Poyang Lake area improved significantly in1995-2015.Two cities to reach the area are from 23.44% to upgrade to 66.24% within two hours,lifting range is 182.59%,which is shorten the time distance of Poyang Lake area greatly and regional accessibility level has been significantly improved,the construction of high-grade traffic arteries has become the main factor to enhance accessibility of Poyang Lake.(2)The traffic superiority of Poyang Lake area is evolved the model of dual nuclei structure into a single core of Nanchang city gradually.The traffic dominance showed high value distribution,and the high value areas of traffic advantages were adjacent to each other in space,which were distributed in Nanchang,Jiujiang and surrounding areas in 1995-2013.As a whole,the "center periphery" spatial distribution pattern,which is from prefecture level city reduced to the edge of the city gradually,and the dual core structure of Nanchang urban area as the "core",Jiujiang urban area as the "sub core" are formed initially.The regional first high-speed railway traffic is operated,Which to promote the Nanchang city in the Poyang Lake area location advantage and traffic advantage effect is very significant,breaking the original dual core structure model and evolving into a single core structure model of Nanchang city.Not only does high-speed railway promote the rapid growth of Nanchang’s urban economy,but also the adjustments of industrial structure and the paces of economic transformation in Poyang Lake are boosted.(3)The comprehensive economic strength of Poyang Lake area has been increasing from 1995 to 2015,but the spatial variability between regions is still significant,and the temporal characteristics is the law of decreasing and then increasing.The economic growth in the region has been growing rapidly,and the comprehensive economic strength of each region has been greatly increased.However,the difference of the comprehensive economic strength of the county is still obvious.The maximum relative difference exists in the prefecture-level cities,and the lowest value appeared in the Beijing-Kowloon railway,Along the Zhejiang-Jiangxi railway and along the Anhui-Jiangxi railway area;The regional economic strength of the four years is 0.8765,1.4556,1.9907 and 2.437,respectively,which is 1.7,1.4 and 1.2times higher than that of the previous year.The coefficient of variation is 0.6091,0.4883,0.2791 and 0.3172 respectively,and the growth rates are-19.83%,-42.84%and 13.65%,showed that the regional differences in the constant increase,but the increase has slowed down,the difference in the temporal characteristics of the performance of the first increase after the increase in the law.(4)The relationship between the traffic dominance degree and the comprehensive economic strength of the Poyang Lake Ecological Economic Zone isthe interaction of the coupling,and the degree of coupling coefficient is the spiral rising trend.From the time point of view,the mean of the coupling coordination index in four years is obviously improved,which is 0.49,0.72,0.81 and 0.83 respectively,among which the administrative county gradually becomes the administrative unit with the highest coordination degree in the region,and the coupling between the prefecture-level urban areas.The relative development degree showed a decreasing trend year by year,and the relative development index of the prefecture-level urban area was always lower than 1.This shows that the Poyang Lake area traffic dominance and comprehensive economic strength of the coupling and coordination role has been significantly enhanced,but with the rapid development of economy,traffic lagging behind the economic development of the situation is increasingly prominent.From the space point of view,the coupling degree of the four years has shown a significant spatial positive correlation.The high-value areas are scattered around Nanchang’s urban areas,most of the cold spots are less developed for transportation and economic development.And the level of economic development is seriously inconsistent with the region.While the relative development degree is only concentrated in the surrounding area of Nanchang in 1995.The cold spots and sub-cold spots are distributed in the marginal area,and the other three years did not show high-value agglomeration phenomenon.This shows that the Poyang Lake area traffic superiority and comprehensive economic strength in the interdependence,mutual promotion of the development process of synergy and mutual adaptability is poor.(5)The relationship between traffic dominance and comprehensive economic strength of coupling coordination type in Poyang Lake area from 1995 to 2015 was antagonized by distribution,running and coordination of the three different stages of the 8 class cut into 2 categories.It is the Jingdezhen urban area and coordination stage in the running-in stage Of the 30 regions,but in the coordination phase in most areas is still in the traffic lagging behind the state of economic development,traffic is still hindering the Poyang Lake area one of the main reasons for economic development.Finally,five important factors influencing the coordinated development of traffic and economy in Poyang Lake area are analyzed from terrain factors,regional advantages,urbanization level,regional industrial structure and regional economic linkages,and the corresponding development strategies are put forward for different coupling coordination types. |
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