Tittle :
The Effect of Environmental Tax and Technology on Different Types of Air Pollution Emissions
(A Comparative Study between OECD-China)

Based on air pollution emissions as an essential problem facing the globe, this research try to answer the following questions:
1- Does environmental tax affect significantly on air pollution emissions such as nitrogen oxides, carbon dioxide, particulate matter (NO, CO2 and Pm2.5)?
2- Is there any influence of the existence of technology on air pollution emissions like NO, CO2 and Pm2.5?
3- Can the intensity effect of environmental tax and technology on air pollution emissions for a specific pollutant is greater significant than other pollutant emissions in the proposed study?
4- Does the impact of environmental tax and technology in OECD region is less than that of a selected sample of OECD members of air pollution emissions such as nitrogen oxides, and carbon dioxide (NO, CO2) ?
5- Is there a difference on the influence of particulate matter (Pm2.5) air pollution emissions due to the presence of environmental tax and technology between China and a selected member of OECD countries?
6- Using different scales of environmental tax is there any correlation among the control variables represented by annual growth rate of GDP and population size (OP) on air pollution emissions (NO, CO2, Pm2.5) in short and long term?
7- Based on the ratio of environmental tax and technology to the annual growth rate (GDP) how does the effectiveness of the different scales varies significantly on the air pollution emissions (NO,CO2,Pm2.5) in long and short term ?
Our research tries to encompass all research questions by formulating different hypotheses that are constructed in the given below:
1- The presence of environmental tax affect significantly on air pollution emissions such as NO, CO2, Pm2.5
2- The existence of technology has an influence on air pollution emissions like as: NO, CO2, Pm2.5.
3- The intensity effect of environmental fees and technology for a specific air pollution emission is different in the proposed study ( OECD , sample )
4- OECD as a whole is less significant to environmental tax and technology compared to the selected sample of OECD members for one of the air pollution emissions (CO2 or NO).
5- The influence of particulate matter (pm2.5) due to the performance of environmental tax and technology is different in China compared to the selected sample of OECD members.
6- The annual growth rate (GDP) and population size (OP) are relatively correlated to air pollution emissions (NO, CO2, Pm2.5) in short and long term.
7- In the short term the effectiveness of environmental tax at its different scales is more significant than long term while technology with its different scales is more sufficient in long term in the proposed study.