Funding for this research was provided by:
National Science Foundation of China (21507009)
Natural Science Foundation of Heilongjiang Province (B2016002)
Natural Science Foundation of Heilongjiang Province (QC2015012)
Young Innovative Talent Training Program of Heilongjiang Province (UNPYSCT-2016083)
Article History
Received: 2 March 2018
Accepted: 7 June 2018
First Online: 15 June 2018