Abstract:

Along with the constant increase of China air transportation turnover volume，jet fuel consumption continues to rise. However，as the jet fuel price and environmental costs(i.e. from carbon trade schemes or taxes)are higher and higher，airlines have to take good measures on fuel-saving. To evaluate the jet fuel consumption of airlines more precisely，this paper studies the existing evaluation index of fuel consumption，per ton-kilometer，based on the 1981-2010 statistical data of China air transportation with least square method，introduces the index of taking off and landing fuel consumption，solves multicollinearity by method of ridge regression and achieves standard ridge regression equation. The results show that the fuel consumption when taking off and landing is higher than when cruising，and introducing the index of taking off and landing fuel consumption is more in line with the actual situation of China air transportation.

Key words: jet fuel consumption, evaluation index, least square method, ridge regression