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**Research on Carbon Emission of Residents’ Consumption—Based on the City of Guangzhou** ()

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*Low Carbon Economy*,

**8**, 31-39. doi: 10.4236/lce.2017.81003.

1. Introduction

Chinese government has set a strategic goal of reducing carbon intensity by 40% to 45% by 2020. Carbon dioxide is the most important part of greenhouse gases, and human activities produce carbon dioxide. Climate warming will cause heat wave invasion, changes in the pattern of drought and flood. Environment we live and our social economic development will have a serious impact.

China’s carbon emissions research has made rapid progress since 2006. However, China’s research on carbon emissions is mainly focused on reducing carbon emissions in high energy-consuming industries, ignoring the impact of consumer spending on carbon emissions. With the rapid development of China’s economy and the continuous transformation of society, China’s consumption patterns continue to change, the resulting carbon emissions are changing. Therefore, to explore the issue of consumer carbon emissions, is conducive to strengthening our understanding of consumer carbon emissions, is conducive to improving China’s carbon emission reduction policies and decision-making targeted and operational.

As to the study of residents of indirect living energy consumption growth factors, Li Yanmei et al. [1] implied input-output method research. Feng Ling et al. [2] used the CLA method to quantify the indirect energy consumption and carbon emission changes of urban residents in China from 1999 to 2007, and analyzed their potential influencing factors. Yao Liang et al. [3] used the LCA method to account for the implied carbon emissions of residents in China in 1997, 2002 and 2007. Zhang Jilu [4] implied factor decomposition method to analyze China’s domestic consumption of indirect carbon emissions, and analysis of domestic consumption of carbon emissions factors and the impact of each factor. Therefore, this paper uses LMDI decomposition method, the urban level as a research perspective, with originality. Considering that most of the previous studies have focused on the carbon footprint of energy consumption [5] , this paper focuses on the carbon emissions of indirect energy consumption.

2. Research Methods

LMDI (logarithmic mean weight division index method) is the use of timing variables of the two endpoints of the logarithmic average as the decomposition of the weight ratio, the weight Equation is:

$L\left(x,y\right)=\{\begin{array}{c}\left(y-x\right)/\left(\mathrm{ln}y-\mathrm{ln}x\right),if\text{}x\ne y\\ x,if\text{}x=y\end{array}$

So

${\omega}_{i}=\frac{L\left({V}_{i}^{0},{V}_{i}^{t}\right)}{L\left({V}^{0},{V}^{t}\right)}=\frac{\left({V}_{i}^{t}-{V}_{i}^{0}\right)/\left(\mathrm{ln}{V}_{i}^{t}-\mathrm{ln}{V}_{i}^{0}\right)}{\left({V}^{t}-{V}^{0}\right)/\left(\mathrm{ln}{V}^{t}-\mathrm{ln}{V}^{0}\right)}$

Substituted the weight equation into the exponential decomposition formula:

$\begin{array}{l}\frac{{V}^{t}}{{V}^{0}}=\mathrm{exp}\left({\displaystyle \underset{i}{\sum}{\omega}_{i}}\mathrm{ln}\frac{{X}_{1i}^{t}}{{X}_{1i}^{0}}\right)\cdot \mathrm{exp}\left({\displaystyle \underset{i}{\sum}{\omega}_{i}}\mathrm{ln}\frac{{X}_{2i}^{t}}{{X}_{2i}^{0}}\right)\cdot \cdot \cdot \mathrm{exp}\left({\displaystyle \underset{i}{\sum}{\omega}_{i}}\mathrm{ln}\frac{{X}_{ni}^{t}}{{X}_{ni}^{0}}\right)\\ \text{}=\mathrm{exp}\left({\displaystyle \underset{i}{\sum}{\omega}_{i}}\mathrm{ln}\frac{{X}_{1i}^{t}{X}_{2i}^{t}\cdot \cdot \cdot {X}_{ni}^{t}}{{X}_{1i}^{0}{X}_{2i}^{0}\cdot \cdot \cdot {X}_{ni}^{0}}\right)\\ \text{}=\mathrm{exp}\left({\displaystyle \underset{i}{\sum}\frac{\left({V}_{i}^{t}-{V}_{i}^{0}\right)/\left(\mathrm{ln}{V}_{i}^{t}-\mathrm{ln}{V}_{i}^{0}\right)}{\left({V}^{t}-{V}^{0}\right)/\left(\mathrm{ln}{V}^{t}-\mathrm{ln}{V}^{0}\right)}\mathrm{ln}\frac{{V}_{i}^{t}}{{V}_{i}^{0}}}\right)\\ \text{}=\mathrm{exp}\left(\frac{\mathrm{ln}{V}^{t}-\mathrm{ln}{V}^{0}}{{V}^{t}-{V}^{0}}{\displaystyle \underset{i}{\sum}{V}_{i}^{t}-{V}_{i}^{0}}\right)\\ \text{=}\frac{{V}^{t}}{{V}^{0}}\end{array}$

From the above equation we can see that LMDI is a complete decomposition method, it will not produce residuals, the data contains zero is no problem. At the same time, due to the characteristics of exponential operations, LMDI is divided into multiplication and decomposition of two, two forms can be converted between each other.

3. Data Source

At present, China’s energy intensity and carbon intensity are measured using energy intensity and carbon intensity per unit of GDP. However, this paper does not simply compare the eight consumer expenditure contents with the energy consumption and output data of the China Energy Statistical Yearbook, but rather 18 industrial sectors related to these consumer expenditure contents (am- ong the industry sectors corresponding to the consumption expenditure contents) are selected from 23 industrialized sub-sectors in Guangzhou Statistical Yearbook (form 2003-2014) (see Table 1). Guangzhou residents consumption expenditure projects and production departments linked. The energy intensity and carbon intensity of consumption expenditure are calculated as follows:

$E{I}_{i}=\frac{{\displaystyle \underset{i}{\overset{n}{\sum}}{E}_{i,n}}}{{\displaystyle \underset{i}{\overset{n}{\sum}}{I}_{i,n}}},\text{}C{I}_{i}=\frac{{\displaystyle \underset{i}{\overset{n}{\sum}}{C}_{i,n}}}{{\displaystyle \underset{i}{\overset{n}{\sum}}{I}_{i,n}}}$ ,

$E{I}_{i}$ represent the energy intensity of the i-th consumer spending; n represent the number of industrial parts corresponding to the content of consumer expenditure; ${E}_{i,n}$ represent the amount of consumption energy of the nth industry sector corresponding to the consumption expenditure of category i; ${I}_{i,n}$ represent the output value of the nth sector of the i-type consumer expenditure corresponds to the output value; $C{I}_{i}$ represent the i-th consumer spending should be the amount of carbon emissions in the nth sector.

Guangzhou residents living in various consumer spending content of indirect energy carbon emissions are calculated as follows:

Table 1. Directly related to the household consumption expenditure activities.

${E}_{ind}={\displaystyle \underset{i}{\sum}\left(EI{}_{i}\times {X}_{i}\right)}\times P,\text{}{C}_{ind}={\displaystyle \underset{i}{\sum}\left(CI{}_{i}\times {X}_{i}\right)}/\times P$

${E}_{ind}$ represent Guangzhou residents living energy indirect energy consumption; ${C}_{ind}$ represent Guangzhou City residents living indirect energy consumption total carbon emissions; ${X}_{i}$ represent Guangzhou City residents per capita expenditure of consumer expenditure; P represent the population of Guangzhou residents.

This paper multiplies the physical quantity of coal, fuel oil, gasoline and diesel in the main energy consumption of industrial sub-sectors above the scale of Guangzhou City, and multiplies the carbon dioxide emission factor to obtain the carbon dioxide emission. Electricity and heat generated by the indirect CO_{2} emissions are still calculated in accordance with the method of electric carbon sharing, that is, the first year of the country to calculate the thermal power generation and heating CO_{2} emissions, and then according to the various departments of Guangzhou City, the terminal power and heat consumption The proportion of electricity and heat consumption in the country, respectively, calculated by the various sectors of electricity consumption and thermal consumption of indirect CO_{2} emissions.

4. Guangzhou Residents Indirect Energy Consumption Carbon Emissions LMDI Decomposition

$C={\displaystyle \underset{ij}{\sum}{C}_{ij}}={\displaystyle \underset{ij}{\sum}P\frac{{P}_{i}}{P}}\frac{{Q}_{i}}{{P}_{i}}\frac{{Q}_{ij}}{{Q}_{i}}\frac{{E}_{ij}}{{Q}_{ij}}\frac{{C}_{ij}}{{E}_{ij}}={\displaystyle \underset{ij}{\sum}P{F}_{i}}{H}_{i}{I}_{ij}{J}_{ij}{K}_{ij}$

C represent Guangzhou city residents indirect energy consumption total CO_{2} emissions; P represent the population of Guangzhou residents; i represent Guangzhou urban and rural population structure, including urban residents and rural residents; j represent Guangzhou residents living and drinking items, including food, clothing, transportation and communications, health care, home appliances and services, education, culture and entertainment services, residential, miscellaneous goods and services;
${P}_{i}$ represent population of urban residents or rural residents in Guangzhou;
${Q}_{i}$ represent consumption of urban re- sidents or rural residents in Guangzhou;
${Q}_{ij}$ represent Guangzhou urban residents or rural residents of the consumer spending;
${E}_{ij}$ represent Guangzhou cty residents or rural residents of the consumption of energy consumption;
${C}_{ij}$ represent consumption of CO_{2} from consumption of urban residents or

rural residents in Guangzhou;
${F}_{i}=\frac{{P}_{i}}{P}$ represent population structure of urban and rural areas in Guangzhou;
${H}_{i}=\frac{{Q}_{i}}{{P}_{i}}$ represent per capita consumption level of urban or rural Residents in Guangzhou;
${I}_{ij}=\frac{{Q}_{ij}}{{Q}_{i}}$ represent Guangzhou residents’ consumption structure ;
${J}_{ij}=\frac{{E}_{ij}}{{Q}_{ij}}$ represent energy consumption intensity of Guangzhou;
${K}_{ij}=\frac{{C}_{ij}}{{E}_{ij}}$ represent CO_{2} Emission intensity in Guang-

zhou, representing the Guangzhou energy structure and CO_{2} emission coefficient.

Therefore, the amount of change in CO_{2} emissions can be broken down into:
$\Delta {C}_{1},\text{\Delta}{C}_{2},\text{}\Delta {C}_{3},\text{}\Delta {C}_{4},\text{}\Delta {C}_{5},\text{}\Delta {C}_{6}$ , represent the contribution of six factors, such as population size, urban and rural population structure, per capita consumption level, residents' consumption structure, energy consumption intensity and CO2emission intensity. Use R and 0 to represent two comparison objects, according to the LMDI method, CO_{2} emissions change can express:

$C={C}_{R}-{C}_{0}=\Delta {C}_{1}+\Delta {C}_{2}+\Delta {C}_{3}+\Delta {C}_{4}+\Delta {C}_{5}+\Delta {C}_{6}$

The above formula 6 variables for different residents living consumption of CO2specific formula is as follows:

$\begin{array}{l}\Delta {C}_{1}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{P}^{R}}{{P}^{0}}\right)\\ \Delta {C}_{2}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{F}_{i}^{R}}{{F}_{i}^{0}}\right)\\ \Delta {C}_{3}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{H}_{i}^{R}}{{H}_{i}^{0}}\right)\\ \Delta {C}_{4}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{I}_{ij}^{R}}{{I}_{ij}^{0}}\right)\\ \Delta {C}_{5}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{J}_{ij}^{R}}{{J}_{ij}^{0}}\right)\\ \Delta {C}_{6}\text{=}{\displaystyle \underset{ij}{\sum}\frac{{C}_{ij}^{R}-{C}_{ij}^{0}}{\mathrm{ln}{C}_{ij}^{R}-\mathrm{ln}{C}_{ij}^{0}}}\mathrm{ln}\left(\frac{{K}_{ij}^{R}}{{K}_{ij}^{0}}\right)\end{array}$

i represent the population type of one year in Guangzhou, including urban residents and rural residents of two categories ;j represent Guangzhou residents living and drinking items, including food, clothing, transportation and communications, health care, home appliances and services, education, cultural and entertainment services, living, miscellaneous goods and services a total of eight types; R and 0 represent two years;
${C}_{ij}^{R}$ 、
${C}_{ij}^{0}$ represent year R and year 0 Guangzhou urban residents or rural residents j class energy CO_{2} emissions, the unit is 10,000 tons of standard coal;
${P}^{R}$ 、
${P}^{0}$ represent year R and year 0 Guangzhou residents population, the unit for the million people;
${F}_{i}^{R}$ ,
${F}_{i}^{0}$ represent year R and year 0 Urban and Rural Population Structure in Guangzhou;
${H}_{i}^{R}$ ,
${H}_{i}^{0}$ represent year R and year 0 Guangzhou Urban residents or rural residents per capita consumption level, unit is yuan;
${I}_{i\text{j}}^{R}$ ,
${I}_{ij}^{0}$ represent year R and year 0 Guangzhou urban residents or rural residents consumption structure;
${J}_{ij}^{R}$ ,
${J}_{ij}^{0}$ represent year R and year 0 urban residents or rural residents in Guangzhou energy consumption structure strength, in ton/yuan;
${K}_{ij}^{R}$ ,
${K}_{ij}^{0}$ represent years R and year 0 Guangzhou urban residents or rural residents energy consumption intensity, in kg/kg.

For the 2002-2003 China residents indirect energy consumption of CO_{2} emissions trends, the cumulative effect of time series:

${\left(\Delta {C}_{1}\right)}_{0,R}={\left(\Delta {C}_{1}\right)}_{0,r}+{\left(\Delta {C}_{1}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{1}\right)}_{R-1,R}$

${\left(\Delta {C}_{2}\right)}_{0,R}={\left(\Delta {C}_{2}\right)}_{0,r}+{\left(\Delta {C}_{2}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{2}\right)}_{R-1,R}$

${\left(\Delta {C}_{3}\right)}_{0,R}={\left(\Delta {C}_{3}\right)}_{0,r}+{\left(\Delta {C}_{3}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{3}\right)}_{R-1,R}$

${\left(\Delta {C}_{4}\right)}_{0,R}={\left(\Delta {C}_{4}\right)}_{0,r}+{\left(\Delta {C}_{4}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{4}\right)}_{R-1,R}$

${\left(\Delta {C}_{5}\right)}_{0,R}={\left(\Delta {C}_{5}\right)}_{0,r}+{\left(\Delta {C}_{5}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{5}\right)}_{R-1,R}$

${\left(\Delta {C}_{6}\right)}_{0,R}={\left(\Delta {C}_{6}\right)}_{0,r}+{\left(\Delta {C}_{6}\right)}_{r,r+1}+\cdots +{\left(\Delta {C}_{6}\right)}_{R-1,R}$

4.1. Influencing Factors of Indirect Energy Consumption of Urban Residents in Guangzhou

We should look at this form from the following point of view: A positive numbers indicate a stimulating effect, the bigger the value, the stronger the stimulating effect. A negative number indicates a repressive effect, the bigger the absolute value of the negative number, the stronger the inhibitory effect.

From Table 2 we can see that, on the whole, population size, urban and rural population structure, per capita consumption level, the consumption structure of residents of urban residents in Guangzhou City, indirect energy consumption of carbon emissions have stimulated; energy consumption intensity, CO_{2} emission intensity On the urban residents of Guangzhou City, indirect energy consumption of carbon emissions have an inhibitory effect.

During the period from 2002 to 2013, the total amount of CO_{2} emissions from indirect consumption of urban residents in Guangzhou increased by 71,570.67 million tons of standard coal. 49.45% from the per capita consumption level; 25.03% from the consumer structure; population size and urban and rural popu-

Table 2. Indirect energy consumption of urban residents in Guangzhou from 2002 to 2013.

lation structure contribution rate was 19.73% and 5.78%, respectively. Inhibition of urban residents in Guangzhou indirect energy consumption of CO_{2} emissions to reduce the total amount of 129,437.15 tons of standard coal. Among the factors that inhibit the indirect energy consumption of urban residents in Guangzhou, 73.89% came from energy consumption intensity and 26.11% were derived from CO_{2} emission intensity. Therefore, the decisive factor in stimulating the CO_{2} consumption of urban residents’ indirect energy consumption is the per capita consumption level. The decisive factor in restraining the indirect energy consumption of urban residents in Guangzhou is energy consumption intensity.

4.2. Influencing Factors of Indirect Energy Consumption in Rural Residents of Guangzhou

From Table 3 we can see that, on the whole, population size, per capita consumption level, the consumption structure of residents of urban residents in Guangzhou City, indirect energy consumption of carbon emissions have stimulated; urban and rural population structure, energy consumption intensity, CO_{2} emission intensity On the rural residents of Guangzhou City, indirect energy consumption of carbon emissions have an inhibitory effect.

During the period from 2002 to 2013, the indirect energy consumption of rural residents in Guangzhou increased by 31,263.84 million tons of standard coal, and 90.79% of the factors that stimulated the indirect energy consumption of rural residents in Guangzhou were from the per capita consumption level. Size and the consumption structure of the residents were 5.64% and 3.57% respectively. 51.71% of the factors contributing to the CO_{2} consumption of indirect energy consumption in rural areas of Guangzhou were from energy consumption intensity; 34.98% were from CO_{2} emission intensity and 13.31% were from

Table 3. Indirect energy consumption of rural residents in Guangzhou City in 2002- 2003.

urban and rural population structure. Therefore, the decisive factor in stimulating the CO_{2} consumption of indirect energy consumption of rural residents in Guangzhou is the per capita consumption level. The decisive factor in restraining the indirect energy consumption of rural residents in Guangzhou is energy consumption intensity. This is consistent with the decisive factors that affect the indirect energy consumption of urban residents in Guangzhou.

4.3. Influencing Factors of Indirect energy Consumption in Guangzhou Residents

The comparison of the influencing factors of indirect energy consumption CO_{2} consumption between urban residents and rural residents in Guangzhou, we can see that, on the whole, the population size, the level of per capita consumption, the consumption structure of residents in Guangzhou urban and rural residents living energy consumption of CO_{2} emissions are stimulated, energy consumption intensity, CO_{2} emission intensity of Guangzhou urban and rural residents indirect energy consumption CO_{2} emissions Have an inhibitory effect. Urban and rural population structure of urban residents in Guangzhou City, indirect energy consumption of CO_{2} emissions have stimulated the role of urban residents in Guangzhou City, indirect energy consumption of CO_{2} emissions have an inhibitory effect. This is due to the increase in the number of rural residents as a result of the increasing population of urban residents, so that the urban and rural population structure has an inhibitory effect on CO_{2} emissions from rural residents’ indirect energy consumption.

5. Conclusion and Prospect

5.1. Conclusion

On the whole, the population size, the per capita consumption level and the consumption structure of the residents are stimulating the indirect energy consumption of urban and rural residents in Guangzhou. The energy consumption intensity and CO_{2} emission intensity of the urban and rural residents in Guangzhou are the indirect energy consumption Have an inhibitory effect. Urban and rural population structure of urban residents in Guangzhou City, indirect energy consumption of CO_{2} emissions have stimulated the role of urban residents in Guangzhou City, indirect energy consumption of CO_{2} emissions have an inhibitory effect.

5.2. Prospect

In this paper, the standard that I choose the factors of the indirect energy consumption of residents will be more allow for data availability. I hope that I will further study the influence of other factors on the indirect energy consumption of residents.

Conflicts of Interest

The authors declare no conflicts of interest.

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