Uncovering trajectories and impact factors of CO2 emissions: A sectoral and spatially disaggregated revisit in Beijing

•We uncover changes and impact factors of sectoral CO2 emissions by districts.•We apply STIRPAT model to examine impact factors of CO2 emissions at district level.•Residential and transportation CO2 emissions increased largely in Beijing.•Population, affluence, energy intensity, industrialization level increase emissions.•Driving factors lead to different impacts on sectoral CO2 emissions.