55 Guanghuacun St,
Chengdu, Sichuan 610074
China
Southwestern University of Finance and Economics (SWUFE)
low-carbon transportation system (LCTS), carbon efficiency, Carbon intensity, spatial difference-in-differences approach (SDID), spillover effects
urban rail transit system, haze pollution, spatial difference-in-differences approach, spillover effect
Social networks, social influence, information diffusion, Renewable energy, biogas, China