Regional differences and dynamic evolution of urban land green use efficiency within the Yangtze river economic belt, China

In this study, we calculate the urban land green use efficiency (ULGUE) in Yangtze River Economic Belt from 2005 to 2019 by using epsilon-based measure (EBM) model. Further, spatial-temporal distribution, regional differences and evolution trends of ULGUE are investigated depth Dagum Gini coefficient, Kernel Density estimation Markov Chain method. The following results obtained. 1) From perspective evolution, show a fluctuating upward trend 2019, it is manifested as diffusion downstream middle upper reaches. 2) differences, there relatively obvious imbalance within Belt, but narrow over time. 3) Considering distribution dynamic box diagram curve have tendency move high values, more phenomenon spatial polarization. 4) For part time space transfer, characteristic “club convergence”, Spatial an “spatial spillover” effect.