Funding for this research was provided by:
National Natural Science Foundation of China (Grant No. 31270538)
The National Key R&D Program of China (2018YFC1406701)
The R&D Infrastructure and Facility Development Program of the Ministry of Science and Technology of the People’s Republic of China (Grant No. NIMR-2017-8)
The Chinese Polar Scientific Strategy Research Fund (IC201706)
Text and Data Mining valid from 2019-06-04
Received: 11 February 2019
Accepted: 15 May 2019
First Online: 4 June 2019
Compliance with ethical standards
: The authors declare that there are no conflicts of interest.
: This article does not contain any studies with human participants and/or animals performed by any of the authors. The formal consent is not required in this study.