Abstract
The improved Lotka-Volterra model for the multi-goods of the multi-ports is proposed based on the competition of kinds of ecological populations in nature. Based on the analysis of the current throughput, annual average growth rate, potential throughput growth space, and the impacts of other port cargo throughput, the model establishes a competition coefficient matrix to determine the competitive cooperation model between different ports. The model is used to analyze the competition and cooperation relationship of different cargo types in four ports of Fujian. The results show that the model can reflect the mutual influence mechanism of competition and collaboration of multiple types of cargo in multiple ports, which can provide an effective and targeted basis for optimizing the cargo structure of ports and improving the competitive relationship of the ports.
Highlights
The Lotka-Volterra model was first proposed by the American ecologist Lotka[1] and the Italian mathematician Volterra[2] based on the Logistic model, and it was an important model to study ecological population relations, and was widely used in the fields of population, economy and chemistry
The model studied the interaction of different variables under the same environmental capacity and can intuitively reflect the relationship between different variables
The model has been applied to many fields, including economy, transportation and port business[4-11]
Summary
The Lotka-Volterra model was first proposed by the American ecologist Lotka[1] and the Italian mathematician Volterra[2] based on the Logistic model, and it was an important model to study ecological population relations, and was widely used in the fields of population, economy and chemistry. The model has been applied to many fields, including economy, transportation and port business[4-11]. In the area of port, the two-population model is mostly used, and the Lotka-Volterra model has not yet been fully developed. The modes of cooperation among ports are not uniform, and it is necessary to comprehensively analyze the competing modes of the multiple types of cargo of multiple ports in order to determine the dominant cargo type of each port. This paper attempts to use the Lotka-Volterra model to qualitatively and quantitatively analyze the competing relationships of different cargo types in different ports within the same region, coordinate the distribution of cargos in the region, and provide new ideas and methods for the study of the impact relationships among ports, provide effective basis for the management and development of the port
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