Research on How to Ensure the Sustainable Supply of Vegetables in the Nordic Countries: A Differential Game Model

Due to the perennial cold, uneven urban distribution, and the impact of the vegetable growing environment, it is difficult to achieve sustainable supply of vegetables in Nordic countries. Governments and enterprises need to take measures to ensure the sustainable supply of vegetables in Nordic countries. Considering that the supply process of vegetables is dynamic and continuous, this paper uses a differential game model to study the sustainable supply of vegetables in Nordic countries. Common vegetable supply modes include original supply, cold chain supply and “mobile factory”. This paper constructs the differential game model under the three modes and compares and analyzes the equilibrium results. Finally, the study concludes that when the return on guarantee the continuous supply of vegetables per unit is small, the cold chain mode can maximize the benefits of governments and enterprises. As the return on guarantee the continuous supply of vegetables per unit increases, the returns of governments and enterprises under the three modes will increase. When the return on guarantee the continuous supply of vegetables per unit is greater than a certain value, the “mobile factory” mode can maximize the benefits of governments. However, when the return on guarantee the continuous supply of vegetables per unit is greater than another specific value, the original mode can maximize the benefits of enterprises.