| Socialism with Chinese characteristics has entered a new era.As the fundamental contradictions in our society transform,new ideologies,new concepts,new journey and new requirements have been put forward for economic and social development.As a major strategy under the new normal state of China’s economy,green development is based on the profound understanding of the historical experience and lessons of China’s long-term development path,equals to a comprehensive judgment of China’s economy has changed from the stage of high-speed growth to the stage of high-quality development,and an inevitable choice to start a new journey of building a prosperous,strong,democratic,civilized,harmonious,beautiful and powerful socialism modernized country in an all-round way.As one of the major national development strategies,it is of great theoretical and practical significance in carrying out the research on the spatial-temporal evolution path and influencing factors of the green development in Yangtze River Economic Zone under the background of fully implementing the new development strategic orientation of"joint efforts to protect,no permits to overdevelop".On the basis of systematically reviewing the origin of the green development and its relevant theories,this paper expounds the concepts,characteristics and internal mechanism of the green development in the new era,and establishes a more scientific and comprehensive evaluation index system of the green development level which reflects the characteristics of the new era and the development strategy of the Yangtze River Economic Zone.In order to reveal the spatial-temporal evolution rules of the green development in Yangtze River Economic Zone,based on the multi-space of 11provinces(direct-controlled municipalities)and 108 cities located in Yangtze River Economic Zone,a comprehensive analysis and judgment of the green development and its composition from 2005 to 2016 in different spatial and temporal scales were made by using the weighted linear comprehensive evaluation technique with the CRITIC weighting method,besides,a quantitative discussion about the differences of regional green development level and spatial correlation in different spatial scales were made by using the variation coefficient and exploratory spatial analysis method.On this basis,the barrier degree model was used to judge the obstacle factors existing in the green development index layer,meanwhile,an empirical analysis of influencing factors of the green development and their spatial differences were made by using spatial econometric model and selecting various factors.The contributions of this paper are mainly reflected in the following four aspects:firstly,according to the historical background and position of the new era in China,the new concept of green development in the new era and the internal mechanism of“five-in-one”of green development are clearly defined and the theoretical basis of green development is consolidated and expanded;secondly,a green development evaluation index system is constructed,which not only reflect the developmental strategic position of“joint efforts to protect,no permits to overdevelop”in Yangtze river economic zone,but also be more adaptable to the needs of the new era,besides,most of the chosen index are relative strength index and structure index which could evaluate the green development level in different areas of the Yangtze river economic zone more scientifically,comprehensively and objectively;thirdly,a study is carried out from provincial and regional spatial scale for the Yangtze river economic zone,the green development level of Yangtze river economic zone and the space and time evolution law of its five elements are revealed through smaller regional unit while assure the influence factors of green development in Yangtze river economic zone and the regional differences of influence factors exist in the eastern,central and western cities in Yangtze river economic zone,which enrich the spatial scope of green development research;fourthly,depending on detailed digital material with large time span,main obstacle factors of the green development in Yangtze river economic zone are revealed by the analysis of index layers in green development evaluation index system through the barrier degree model,furthermore,choosing six factors from five dimensions outside the index system which are economic development,scientific and technological innovation,financial support,international cooperation and education development to do a comparative analysis and research on the green development influencing factors for108 cities and the eastern,central and western cities in Yangtze river economic zone by using the spatial econometrics model that offering new evidence and facts for the influencing extent and directions of different factors in the green development.The results show that:1.From 2005 to 2016,benefited by China’s green development concept and the implementation of green development strategy,the green development of the Yangtze River Economic Zone had made some achievements.The gap among provinces or cities was not wide and had a narrowing trend.It showed the characteristics of"high in eastern and fast growth in western provinces and cities"which mainly appeared to be high-high convergence and low-low convergence in space.From the provincial view,the comprehensive level of the green development basically maintained between 0.3917and 0.5281,and the ratio between the highest and lowest decreased from 1.24:1 to1.14:1;at the municipal level,the comprehensive level of the green development basically maintained between 0.3098 and 0.5919,and the ratio between the highest and lowest decreased from 1.66:1 to 1.49:1.However,the overall level was still low,and the green development still had a long way to go.2.From 2005 to 2016,the development level of green economy,green society,green ecology,green politics and green culture of Yangtze River Economic Zone,whether from provincial or municipal views,had a fluctuated and increasing trend,and basically maintained a situation of relatively high green economy and green society development level,a medium or relatively high green ecology development level,a medium green politics development level and the lowest green culture development level,meanwhile,they showed a similar feature of"high in eastern areas and fast in west"with the comprehensive level of green development in Yangtze River Economic Zone in spatial expression.Only the green ecology development level showed a spatial situation of relatively high in central and western areas and relatively fast growth rate in eastern areas.The relative spatial gap among the five components showed a contracting trend,only the development level of green culture had a large space gap,while the other gaps are small.3.From 2005 to 2016,the direct-controlled municipalities,capital cities and other central cities in Yangtze River Economic Zone had a relatively high comprehensive level of green development,which was mainly benefited from the support of the green economy,green society and green culture.But the other two components of green ecology and green politics did not have such advantage.Furthermore,the comprehensive green development levels and its five components of central cities in eastern and western areas were rank ahead in respective spaces,whereas,the green economic development level,the green social development level and the green culture level of central cities in central areas were relatively low.Meanwhile,the green development level of central cities had a positive spatial spillover effect on the green development of their neighboring cities,and the negative spatial spillover effect was only generated in the eastern part of Yangtze River Economic Zone.4.From 2005 to 2016,there were totally 11 obstacle factors of green development in the provincial level of the Yangtze River Economic Zone,which included urban gas popularizing rate,the number of public toilets per 10000 people,the number of public vehicles per 10000 people,the per capita daily electricity consumption,the per capita water resources,the per capita green area,the forest coverage rate,the per capita wastewater discharge amount,the fertilizer usage per unit sown area,the density of built-up area drainage pipes and the comprehensive utilization rate of general industrial solid wastes.At the municipal level,there were two more obstacle factors which were per capita green park area and per capita industrial SO2 emission,but there were slight differences among provinces and cities.5.From 2005 to 2016,thepromotion of industrialization and education development had a significant negative impact on the green development of the Yangtze River Economic Zone.Other factors had different performances in space.Specifically,industrial upgrading,industrialization,financial support,scientific and technological innovation and education development were the main factors that affected the green development of the eastern cities in Yangtze River Economic Zone.Education development,industrialization,international cooperation and financial support are the main factors that affected the green development of the cities in central areas of Yangtze River Economic Zone.Technological innovation,international cooperation,industrialization,industrial upgrading and education development were the main factors that affected the western cities of Yangtze River Economic Zone. |