Funding for this research was provided by:
Jiangsu Province Natural Science Foundation of China (BK20150201)
National Natural Science Foundation of China (61402521)
National Natural Science Foundation and Shanxi Provincial Peoples’ Government Jointly Funded Project of China for Coal Base and Low Carbon (U1510115)
Qing Lan Project and China Postdoctoral Science Foundation (2013T60574, 2016M601910)
Article History
First Online: 18 June 2018