In order to explore the efficiency of coastal port groups in China,the three-stage slacks-based measure(SBM)model is used to measure the efficiency of five major coastal port groups in China from 2012 to 2021.The results show that:the 4 selected environmental variables have obvious effects on the efficiency of port groups,and the improvement of external environmental conditions can effectively improve the efficiency of port groups;after excluding the influence of external interference factors,the efficiency ranking of port groups from high to low is the Yangtze River Delta port group,the southwest coastal port group,the Bohai Rim port group,the Pearl River Delta port group and the southeast coastal port group,among which the Yangtze River Delta port group is the only port group that reaches the efficiency frontier.The development of ports within a port group is uncoordinated and the efficiency values are uneven,so it is necessary to clarify the positioning of port functions,optimize the allocation of port resources and accelerate port integration to improve the efficiency of port groups.
port groupport efficiencythree-stage slacks-based measure(SBM)model
NETL
NSTL
万方数据
