关键词: 城市交通, 公交信号优先, 优先级, 优先策略, 延迟, 层次分析法

Abstract: The energy consumptions of aircrafts during 1960-2009 are calculated, and the energy consumption intensity and its dynamic characteristics are analyzed, based on annual statistical data collected by Chinese Civil Aviation Statistic Center. The results show that the energy consumption of aircrafts in China increases at a rate of 0.4024 Mt standard coal equivalent per year. The energy consumption intensity of aircrafts decreases from 1.42 kg standard coal equivalent (converted t km) -1in 1960 to 0.46 kg standard coal equivalent (converted t km)-1 in 2009 at an average rate of 19.6 g standard coal equivalent (converted t km)-1 per year. The energy consumption of aircrafts exceed that of locomotives since 2002. The proportion of aircrafts energy consumption to that of vehicles in China is 4.4%. This study can provide some valuable data on the status quo of energy consumption of civil aviation of China. Furthermore, the estimation presented in this paper can also give some suggestions for making energy saving strategy in China civil aviation.

Key words: air transportation, civil aviation of China, aircraft, energy, energy consumption intensity