Research On Carbon Emission Influencing Mechanism And Emission Reduction Strategy Considering Structural Evolution

Increasing carbon emissions from anthropogenic activities are the main cause of global warming.With the popularization of the concept of green and low-carbon development and the broad agreement of international emission reduction,carbon emissions have become a hot issue in international and domestic circles.Revealing the influential mechanism of important factors on carbon emissions of economy or industry is the premise of formulating effective emission reduction policies and implementing positive emission reduction measures,and also a hot research topic in academic circles.At present,though there are abundant studies focus on the influential factors of carbon emissions,the studies which considering the impacts from the changes of structural factors still needs to be improved.This dissertation constructs a theoretical model for analyzing the mechanism of carbon emission impacts considering structural factors.Based on this theoretical model,the carbon emission impact mechanism from the perspective of production and demand is discussed.By expanding the input-output subsystem model,the impacts of changes in demand and supply linkages in the production links of the economic subsystem are incorporated into the decomposition model,and key industries and factors affecting carbon emissions at the production and demand sides are identified and quantitatively analyzed from the perspective of the subsystem.In order to analyze the mechanism deeply,this dissertation takes the power industry as an example to construct the power subsystem model.From the perspective of industrial linkages and structural change of driving force of economic growth,the dissertation studies the mechanism of the influence of power structure and demand structure on the carbon emission change of power industry.Then,it introduces the regional power transmission model to analyze power transmission from the perspective of regional supply and demand structure.The impacts of transmission structure and regional power generation structure on regional power consumption structure and carbon emission responsibility are discussed.Finally,taking the construction industry as an example,the key industry of indirect carbon emissions,and combining with the first-hand survey data,the structure of building materials input and energy supply scenarios are integrated into the life cycle evaluation model.Investigate the impact of initial input structure and operational energy supply mode on carbon emission performance of indirect emission sectors from the perspective of material input and energy use structure of consumption terminals.The main conclusions are as follows:The change of energy use structure and production efficiency is the main reason for the downward trend of carbon emissions.The effect of the change of demand structure on emission reduction is far less than that of the change of production structure factors,and the change of demand structure is not always advantageous to emission reduction during the research period.In the short term,promoting the optimization of production and demand structure is still an important effort to promote emission reduction.In the long run,the emission reduction effect of energy structure optimization is the most significant.Strengthening investment scale and operation management of fixed assets in the indirect sector is crucial to reduce the emission growth from demand factors.Without supervision and operation management,it is difficult to achieve the established energy saving and emission reduction effect by configuring energy-saving equipment and intelligent systems in energy use terminals,and new energy technologies and equipment should be carefully distributed in areas with low level of cleanliness of energy structure.