The spatio-temporal differentiation,future trends and driving factors of port efficiency in the Bohai Rim region
The super-efficiency SBM model,kernel density estimation and Theil index are used to measure and analyze the temporal and spatial evolution of port efficiency in the Bohai Rim re-gion from 2001 to 2020.Further,the future trend of port efficiency is explored by combining the Theil-Sen median trend,Mann-Kendall test and Hurst index,and finally the driving factors of port efficiency are identified by using the Tobit model.The results show that:(1)The overall port efficiency in the Bohai Rim region shows a fluctuating growth trend,and has experienced two development stages of rapid growth and slow growth successively;(2)The regional differ-ences of port efficiency in the Bohai Rim region are significantly reduced,and the clockwise de-creasing pattern of"Shandong-Jinji-Liaoning"is gradually weakened,and the spatial distribution of port efficiency is more balanced.(3)The spatial differences of port efficiency in the Bohai Rim region are mainly from intra-regional differences,and the intra-regional differences are mainly caused by the intra-regional differences in the Shandong region.(4)In the future,there is a risk that the spatial difference of port efficiency in the Bohai Rim region will expand again;(5)Port function,port spatial competition and transportation capacity are the main factors driving the spatio-temporal evolution of port efficiency in the Bohai Rim region,while the level of open-ing up and hinterland economy are secondary factors.
port efficiencyspatio-temporal differentiationdriving factorsHurst indexBo-hai Rim region
NETL
NSTL
万方数据
