Funding for this research was provided by:
National Natural Science Foundation of China (41125020)
Polar Strategic Research Foundation of China (20140306)
Polar Environment Investigation and Assessment Supported by the Chinese Arctic and Antarctic Administration (CHINARE2017-03-04-03, CHINARE2017-04-03-05)
Article History
Received: 21 November 2016
Accepted: 14 September 2017
First Online: 20 September 2017