1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), Xi’an 710061, China
2. Xi’an Institute for Innovative Earth Environment Research, Xi’an, 710061, China
3. Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center of IEECAS, Xi’an 710061, China
4. Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China
5. Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China