Input-output analysis and structural decomposition method and system for polycyclic aromatic hydrocarbon emission

Abstract

The invention discloses an input-output analysis and structure decomposition method for polycyclic aromatic hydrocarbon emission. The method comprises the following steps: acquiring input-output tables of a plurality of years and setting industry classification; according to the price index, converting the input-output table into a specified year price; determining each polycyclic aromatic hydrocarbon emission coefficient of each industry in each year; obtaining the total amount of polycyclic aromatic hydrocarbons; obtaining a row of emission intensity matrixes according to the total amount of polycyclic aromatic hydrocarbons; acquiring a consumption and input coefficient matrix through the input-output table, carrying out the emission linkage analysis, and obtaining a linkage matrix based on a consumption end and a linkage matrix based on an input end; obtaining a backward contact value and a forward contact value, and determining a key emission industry. The method is used for determining the polycyclic aromatic hydrocarbon emissions of the consumption end and the input end, and key industries which are dominant in emission in an industrial chain can be determined; through year structure decomposition analysis, the contribution of each social economic factor to the polycyclic aromatic hydrocarbon emission variation among different years is determined, and the method can be used for formulating a polycyclic aromatic hydrocarbon emission reduction strategy of each industry.

Description

technical field [0001] The invention relates to the research field of environmental economics, in particular to a method and system for input-output analysis and structural decomposition of polycyclic aromatic hydrocarbon emissions. Background technique [0002] The existing input-output analysis methods and structural decomposition methods are all aimed at the emission of pollutants such as carbon dioxide, sulfur dioxide, and PM2.5, and there is a lack of analysis methods for polycyclic aromatic hydrocarbons based on both the consumption side and the input side. As a by-product of combustion, polycyclic aromatic hydrocarbons are carcinogenic, but there is no input-output analysis method based on consumption and input for polycyclic aromatic hydrocarbons, and there is also a lack of structural decomposition to analyze the changes in polycyclic aromatic hydrocarbons due to socioeconomic factors method. Therefore, for key PAH-emitting industries, industry emission characteris...

AI Technical Summary

Problems solved by technology

[0002] The existing input-output analysis methods and structural decomposition methods are all aimed at the emission of pollutants such as carbon dioxide, sulfur dioxide, and PM2.5, and there is a lack of analysis methods for polycyclic aromatic hydrocarbons based on both the consumption end and the input end.

As a by-product of combustion, polycyclic aromatic hydrocarbons are carcinogenic, but there is no input-output analysis method based on consumption and input for polycyclic aromatic hydrocarbons, and there is also a lack of structural decomposition to analyze the changes in polycyclic aromatic hydrocarbons due to socioeconomic factors method

Therefore, for key PAH-emitting industries, industry emission characteristics and flow patterns are not clear

In addition, the impact of socio-economic factors on PAH emissions has yet to be clarified

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