1.Introduction A large amount of green house gases (GHGs) have been exhausted with the rapid development of urbanization and human activity, and the reduction of environmental load on energy consumption of daily transportation has caused extensive concern.A low-carbon society (LCS)④ is a society which has a minimal output of GHG emissions into the biosphere.GHGs specifically refers to CO2.The international community has come to the conclusion that there is such an accumulation of GHGs (especially CO2) in the atmosphere due to anthropogenic causes that the climate is changing, with negative impacts on humanity in the foreseeable future.