| In recent years,the carbon emission in the atmosphere increases,and the temperature of the earth surface rises accordingly.The global warming directly leads to the frequent occurrence of extreme climate such as drought,heat and flood,which has an important impact on the environment.The use of fossil fuels is one of the main reasons for the increase of carbon emissions,and at present the energy consumption of our country is still increasing every year,so it is imperative to control carbon emissions.In addition,with the improvement of our people’s quality of life,people’s demand for dairy products has gradually increased.Due to the characteristics of short shelf life and easy to perishable,the storage and distribution of dairy products have extremely high temperature requirements.If the improper way is used in the transportation process or storage,it is very easy to produce a variety of microorganisms to affect the quality of dairy products.If it reaches consumers,it will harm their safety and quality of life.In order to ensure the quality of dairy products,storage and transportation of dairy products need fresh-keeping and refrigeration,which promotes the rapid development of cold chain logistics industry in our country.But the use of cold chain equipment usually causes high energy consumption and carbon emissions.Therefore,this paper studies the problem of optimizing the distribution route of dairy products cold chain logistics which considers carbon emissions.First of all,this paper summarized the existing research results of cold chain logistics of dairy products,vehicle routing and logistics routing optimization considering carbon emissions,and then introduced the relevant theories of cold chain logistics distribution of dairy products,vehicle routing and carbon emissions accounting.On this basis,the optimization of cold chain distribution of dairy products considering carbon emissions was studied.Secondly,by analyzing the distribution characteristics of cold chain logistics of dairy products and the current"two-carbon" development strategy,this paper chooses to explore the cold chain logistics path of dairy products in the multi-temperature co-distribution mode from the perspective of considering carbon emissions.In this paper,various costs in the cold chain logistics distribution process of dairy products were considered,and the optimization goal was to minimize the total distribution cost.A cold chain logistics route optimization model under the multi-temperature co-distribution mode of dairy products was constructed.In addition,two policy scenarios were analyzed respectively considering the implementation of carbon trading policy and carbon tax policy,and carbon tax and carbon trading price were introduced to calculate carbon emission costs.The carbon emission is converted into economic cost,and the model under two conditions is constructed,Finally,taking the distribution of dairy products of A logistics company as an example,this paper uses python software and improved genetic algorithm to solve the problem.The results show that under the condition of considering carbon emission,no matter the carbon tax policy or carbon trading policy is implemented,the total cost and total mileage of distribution are reduced,and the carbon emission is also significantly reduced.At the same time.compared with the actual data of A logistics company,the total distribution cost and the number of distribution vehicles are reduced under the multi-temperature co-distribution mode.In addition,the sensitivity analysis of carbon tax price and carbon trading price,which affect carbon emissions and total distribution cost,is also carried out in this paper.The study of this paper can play a certain reference and reference significance for the reasonable planning of cold chain distribution of dairy products in logistics companies,and can also play a certain role in the setting of relevant parameters for the government to implement carbon emission reduction policies. |
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