1. Department of Environmental Science, Shaanxi Normal University, Xi'an 710062, China
2. State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210023, China
3. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an710127, China
4. Big Data and Urban Spatial Analytics Laboratory, College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China