1Key Laboratory of Northwest Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
2School of Geography and Environment, Shandong Normal University, Jinan 250358, PR China
3Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
4State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
5CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China
6Hainan Tropical Ocean University, Sanya 572022, China
7Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
8Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China