Evaluation Model And Optimization Method Of Urban Passenger Transport System Based On Carbon Emission Target

At present, China is at a stage of rapid development of urbanization, and themotorization level of the cities is also rapidly increasing. The number of cars in2010hasreached50million with an over20%annual growth rate, and will amount to100-130million in2020. As a result of such a rapid growth of motor vehicles in China, CO andCO2emission of the vehicles has reached respectively85%and50%of the wholepollution emission. Many cities face double pressures of energy crisis and environmentaldegradation, which has made the low-carbon economy a trend in current socialdevelopment.The dissertation first studied the impact of low-carbon economy on urbandevelopment and did a research of the urban transportation system based on thelow-carbon economy. Then, taking life-cycle carbon emission of the urban transportationsystem as a study object, the dissertation analyzed the carbon emission structure inChina’s transportation system, and built a model to measure carbon emissions in theconstruction of urban infrastructure and the process of urban passenger transportation.In the dissertation, the carbon emission calculation models for construction phaseand operation phase of urban transport system are established respectively. A case studywas conducted to test the models which could measure carbon emissions in the twophases. The research provided a quantitative model for the evaluation of low-carbonprojects of urban transport infrastructure.This dissertation did a quantitative study on the structure of urban transport systemand built a low-carbon optimization model for urban transport system which aims atoptimizing the overall transport efficiency and takes various factors affecting thelow-carbon target as the constraint conditions. First, the dissertation obtained the carbonemission factors of different transportation methods by using Mobile software, and thenused COMMUTER software to compare the carbon emissions before and afteroptimizing the transport system. Finally, it analyzed the impact of urban transport controlmeasures on transport efficiency and carbon emissions of the urban transport system.Based on the above-mentioned study, a life-cycle carbon emission measurement model for Guiyang City was built, aiming at meeting the goal of low-carbon citydevelopment and keeping abreast of the status of carbon emissions in transport system.This model can help to find a reasonable way to build a low-carbon transport system inGuiyang.To sum up, this dissertation put forward a scientific and reasonable “carbonreduction path” for Guiyang City based on the low-carbon transport development strategyand the study of urban transport system. It provided a quantitative model for themeasurement of carbon emissions of urban transport system in Guiyang City, which isalso very useful for low-carbon development of urban transport system in other cities.