Study on the decoupling relationship between transport carbon emission and economic growth is of great practical significance for achieving the goals of carbon peaking and carbon neutrality. This paper mainly uses a "bottom-up" transportation carbon emission calculation method to calculate the annual transportation carbon emission of railways, aviation, water, and roads in China and various provinces. It analyzes the spatiotemporal changes of China's transportation carbon emission from 2000 to 2020, and uses the Tapio decoupling models to explore the decoupling status of China's transportation carbon emission. It is found that (1) From 2000 to 2020, the total carbon emission from China's transportation increased from 237.7441 million tons to 1390.5147 million tons. The period from 2004 to 2011 was a period of rapid growth, and the growth rate began to slow down after 2012; (2) From 2000 to 2020, road carbon emission was the main source of carbon emissions in China's transportation, with a slight increase in the proportion of carbon emission from air transportation and a significant decrease in the proportion of carbon emission from railways and waterways; (3) From 2000 to 2020, there were significant regional differences in transportation carbon emission in the four major regions of eastern, central, western, and northeastern China; (4) From 2000 to 2020, the carbon emissions and economic development of China's transportation industry showed an overall trend of "relative decoupling", with most provinces including Beijing and Shanghai achieving "decoupling".

transportation carbon emissions  /  decoupling analysis  /  Tapio decoupling model