关键词: 碳排放, 车辆路径问题, 冷链物流, 生鲜农产品, 蚁群算法

Abstract: Taking the lowest costs as the objective function, the total costs of distribution include the following costs：the fixed costs of distribution vehicles, transportation costs, damage costs of fresh agricultural product, refrigeration costs, carbon emissions costs in the process of delivery, penalty costs due to not meeting the customers’required service time windows. The distribution route optimization model of fresh agricultural products considering carbon emissions is constructed. An improved ant colony algorithm combined with 2-opt local search mechanism is proposed to solve the model. With a numerical example, the effectiveness of the model and the algorithm is proved, and the sensitivity of the parameters in algorithm is analyzed with the numerical example. The simulation results and algorithm comparison show that the model and the algorithm are effective, and can provide reference for logistics enterprises’ distribution decision.

Key words: carbon emission, vehicle routing problem, cold logistics, fresh agricultural product, ant colony algorithm