Research on ecological evaluation of Shanghai port logistics based on emergy ecological footprint models

With the advent of economic globalization, port logistics industry in China has developed rapidly, but the energy consumption and pollution emissions brought by the development of port logistics are also increasing, which has seriously affected the regional environment. This study improves the traditional calculation method of ecological footprint based on the theory of emergy analysis and builds the emergy-ecological footprint (EEF) model of port logistics. Through data collection and analysis, the ecological situation of Shanghai port logistics from 2009 to 2018 is studied. The results show that the energy footprint of Shanghai port logistics is the largest component of the ecological footprint of port logistics, followed by the pollution footprint. Although the development of port water logistics promotes the development of natural resources and improves the ecological carrying capacity of port logistics, the ecological footprint is higher than the ecological carrying capacity, and Shanghai port logistics is still in an ecological deficit state. Therefore, this paper puts forward some strategies and suggestions to improve the ecological situation of Shanghai port logistics from the aspects of the formulation of laws and regulations, the improvement of port production and operation facilities, the improvement of collection and distribution structure and the strengthening of propaganda. Not only is it beneficial to the development of Shanghai green port logistics, but it also brings certain reference significance to the construction of other green ports.