Funding for this research was provided by:
Environmental Protection Department of Hubei Province (2017HB04)
Fundamental Research Funds for the Central Universities (CUG170102)
Article History
Received: 8 August 2019
Accepted: 6 December 2019
First Online: 9 January 2020
Compliance with ethical standards
: The author(s) declare that they have no competing interests.