Measurement the low-carbon level of residents´ daily travel in Zhengzhou city

In this paper, we choose almost four hundred households in Zhengzhou city for investigating their daily travel behavior. And combined with the statistical data about the Zhengzhou transportation, we estimated the CO2 emissions of Zhengzhou residents commute and obtained some conclusions: in 2001-2010, the carbon dioxide emissions of Zhengzhou urban residents is growing, and its growth rate is similar to the growth of the private cars of CO2 emissions and the traffic CO2 emissions of per person. The change of CO2 emissions of buses and taxis are quite minimal, whose emissions ratio in the total carbon dioxide emission of residents daily travel is decreasing gradually; the traffic low-carbon standard of Zhengzhou residents is a high-carbon mode due to the low-carbon index, which is greater than 1.2 except in 2005, which for the city residents transport CO2 emissions, the growth rate was much greater than the growth rate of per capita consumption expenditure. The increasing income and the growth of daily commuting distance could induce to more motor vehicles and longer annual mileage. The further optimization in the public transport network not only promotes a small increase in carbon emissions from buses, but also will inhibit the rapid growth of carbon emissions from private cars and optimize the structure of the resident´s transportation carbon emissions, which may be an opportunity for the carbon reduction of the residents daily commute.