| Ecological efficiency is a good tool for measuring the coordinated development of economy and environment when seeking sustainable development.Currently,the most commonly used method for measuring ecological efficiency is the DEA model method.The same scale is often used to measure ecological efficiency when measuring ecological efficiency.However,due to different regional development conditions,resource endowments and scientific and technological development,this thesis introduces the Meta frontier model based on the sbm undesirability model,divides prefecture level cities in Chinese Mainland into three groups: eastern,central and western,and calculates their ecological efficiency under the common frontier and group frontier,And use the common technology ratio of ecological efficiency to explore the gap between the actual technological level of regional ecological utilization and the potential technological level of ecological utilization.Further analyze the reasons for regional ecological utilization inefficiency through the analysis of ecological utilization inefficiency,and use Chiu’s method to decompose the ecological utilization inefficiency of various provinces under the common frontier into technology gap inefficiency and management inefficiency.On this basis,the ecological utilization inefficiency is decomposed into two dimensions: technology gap inefficiency and management inefficiency,in order to analyze the ecological utilization inefficiency of each city type in the three major regions.Using the public boundary principle to determine the inverse distance square matrix,establish the Markov chain transfer matrix,divide the ecological efficiency MTR of prefecture level cities in Chinese Mainland into four types,and analyze its change trend and explore the causes of its change by studying the transformation distribution of the level of common technical ratio of ecological efficiency of prefecture level cities in Chinese Mainland from 2003 to 2019.On the basis of Markov chain,the spatial Markov chain probability matrix is constructed to study the influence of the neighborhood environment of the region on its transition probability.The main research achievements include:(1)Under the common front,the average ecological efficiency value in the eastern region is 0.4791,the average ecological efficiency value in the central region is 0.3759,and the average ecological efficiency value in the western region is 0.3824.Under the group front,the average ecological efficiency value in the eastern region is 0.6265,the average ecological efficiency value in the central region is 0.5668,and the average ecological efficiency value in the western region is 0.5820.Whether in the common front or under the group front,the ecological efficiency value shows a trend of eastern>western>central,with a small gap between the western and central regions,while the average ecological efficiency in the eastern region is significantly higher than that in the central and western regions.(2)Under the common front and group front,the average ecological efficiency of the eastern region is the highest,followed by the central region,and the western region is the smallest among the central cities in the region;The average ecological efficiency of resource-based cities shows a pattern of western>eastern>central;However,other types of cities exhibit a trend of changes in the east,central,and western regions.(3)Through research on the common technology ratio of ecological efficiency in various regions,it was found that the average common technology ratio of ecological efficiency in the eastern region is 0.8992,the average common technology ratio of ecological efficiency in the central region is 0.6500,and the average common technology ratio of ecological efficiency in the western region is 0.7140.The average common technology ratio of ecological efficiency in the eastern region shows a trend of eastern>western>central,The common technology ratio of its ecological efficiency also shows that the eastern part of the regional central city is greater than the central part and greater than the western part;Resource-based cities exhibit a pattern of western>eastern>central;However,other types of cities exhibit a trend of changes in the east,central,and western regions.(4)The average ecological utilization inefficiency(IE)of cities in the eastern,central,and western regions from 2003 to 2019 was the lowest in the eastern region,followed by the western region,and the highest in the central region.The degree of ecological utilization inefficiency in the central and western regions was similar,while the eastern region was relatively low.The ecological efficiency management ability of the eastern region is better than that of the central and western regions,while the western region is slightly better than the central region.Compared to the central and western regions,the technology level environment in the eastern region is the best.Among the three city types,the central cities in the eastern,central,and western regions have the highest management inefficiency and technology gap inefficiency values,while the central region is slightly smaller.The management inefficiency and technology gap inefficiency rates in the eastern region are significantly lower than those in the central and western regions.Among the resource-based cities in the eastern,central,and western regions,the management inefficiency rate shows an increasing trend in the western,eastern,and central regions,while the technology gap inefficiency rate shows an increasing trend in the eastern,western,and central regions.(5)The Markov chain transfer matrix and spatial Markov chain model are used to study the transfer situation,spatial distribution of types and transfer probability of neighborhood spatial impact of the common technical ratio of ecological efficiency of prefecture level cities in Chinese Mainland.The results show that the type Ⅰ and type Ⅳ of the diagonal probability values are greater than the non diagonal probability values,which means that the common technical ratio types of ecological efficiency at both ends have certain robustness,This indicates that the likelihood of these two regions maintaining their original common technology ratio type is at least 0.3372,while the likelihood of maintaining their original state is 0.3372 and 0.3483,respectively.(7)The number of cities in the lower ecological efficiency common technology ratio and low ecological efficiency common technology ratio types is continuously decreasing,but at the same time,most cities in the western region that originally belonged to the high ecological efficiency common technology ratio type are also shifting towards lower ecological efficiency common technology ratios,with more ecological efficiency common technology ratios in the middle two types of cities.Cities with high ecological efficiency and common technology ratios are showing a trend of moving from west to east.According to the distribution map of the transformation of the level type of the common technical ratio of ecological efficiency of prefecture level cities in Chinese Mainland,most cities show a downward trend,and only one city has a stable transformation of the type of the common technical ratio of ecological efficiency.(8)According to the spatial Markov transfer matrix,for regions with low ecological efficiency common technology ratio types,the closer the neighborhood level is to cities with higher ecological efficiency common technology ratio types,the more likely they are to be influenced by higher type cities and transition to lower ecological efficiency common technology ratio types.For regions with lower ecological efficiency common technology ratio types,the closer the higher the level of ecological efficiency common technology ratio type to the higher level of ecological efficiency common technology ratio type,the greater the probability of transformation,and the closer the level of ecological efficiency common technology ratio type to the low ecological efficiency common technology ratio type,the greater the probability of transformation.For regions with higher ecological efficiency common technology ratios,the closer they are to the same type of ecological efficiency common technology ratio,the easier it is to transition to the type with lower ecological efficiency common technology ratios. |
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