Funding for this research was provided by:
National Key R&D Program of China (2017YFC1502502, 2017YFC1502506)
135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS (No.SDS-135-1701)
Youth Innovation Promotion Association of the Chinese Academy of Sciences (2018405)
National Natural Science Foundation of China (41372331, 51679229, 41672318)
Article History
Received: 26 October 2017
Accepted: 13 June 2018
First Online: 15 August 2018