Research on green synergistic development of urban traffic and land use based on the synergistic degree model of composite system

The green synergistic development of urban traffic and land use has emerged as a key requirement for the integrated planning of urban traffic systems and spatial land use. Drawing on system theory and synergy theory, this paper develops a synergistic model of the composite system of urban traffic and land use, considering the influence of ecological environmental factors. Using relevant data from Lanzhou City from 2012 to 2022, an empirical analysis was conducted, revealing that the development levels of traffic, land use, and the environment in Lanzhou City have generally been on the rise. However, the development has been uneven, with ecological progress lagging behind, and the overall synergistic development effect has not been prominent. The synergy of the composite system fluctuated between [-0.1048, 0.7613] from 2013 to 2022, with rapid growth since 2019. Traffic, land use, and the environment have begun to form a synergistic mechanism interacting to promote mutual development. By 2022, Lanzhou City’s green synergistic development has progressed from a slight ecological imbalance recession to ecologically balanced synergistic development.