Low-Carbon City and Underground Space Planning in the Mountain City - A Case of Chongqing

The city nowadays becomes the home of high concentration of carbon emissions. Hence, the development of underground space can lead to the integration of transportation in urban agglomeration, specifically in mountain cities. However, underground space can be layout as the structure of "Flake-node network" in the core area ,or the structure of "gathering point" in the periphery consequential area .The planning of underground space coordinate the ground city‘s structure of" Multi-center and team-style", and should develop by axis with track.