Analysis Of The Impact Of Suburban Railway Construction Investment On The Economy Of Metropolitan Area Based On CGE Model

With the development and expansion of my country’s major metropolitan areas,the important position of suburban railways has gradually become prominent,and the construction of suburban railway infrastructure has also been put on the agenda.By studying the impact of suburban railway infrastructure construction on the social economy in the metropolitan area,it is clear that the increase in investment in suburban railways will optimize other industries,and quantify the social benefits generated by the operation of suburban railways.This will help optimize the regional economic layout and promote coordinated regional development.Important practical significance.This paper uses the Computable General Equilibrium(CGE)model to construct a CGE model with five modules: production,trade,income and expenditure,investment and savings,and macro closed equilibrium.And the economic area in the CGE model is divided into two parts: the data statistical area and the area other than this area.The model divides trade into inter-provincial trade and international trade.In view of the actual situation of my country’s current regional fiscal revenue and expenditure,the model divides government departments into central government and local government.Taking the Beijing-Tianjin-Hebei metropolitan area as the research object,the 42 activity departments in the compiled Beijing Social Accounting Matrix were merged into eight major departments.Among them,the construction industry was split into the suburban railway infrastructure construction industry and other construction industries.Using GAMS(The General Algebraic Modeling System)software,the economic impact of suburban railway construction investment is measured by directly changing the amount of investment in the suburban railway infrastructure construction industry in the programming language.By increasing Beijing’s suburban railway infrastructure investment by 10%,20%,50%,80%,and 100%,it simulates the five aspects of regional GDP,other industrial sectors,other total investment,corporate and government income,and employment.influences.Explore the economic impact of investment in suburban railway infrastructure construction on society.This is only the social impact generated during the construction of the suburban railway,and the social benefits generated during the operation of the suburban railway also need to be considered.The five social benefits of improving travel efficiency,improving comfort,reducing fatigue,reducing traffic accident losses,inducing passenger flow and bus replacement are measured,and part of the social benefits during the operation of suburban railways are quantified.According to the simulation and calculation results,it is found that the construction of suburban railway has obvious external economy and public welfare,and the socio-economic impact during the operation of suburban railway is magnified.In this way,we put forward policy recommendations on the planning and construction of suburban railways.