State;
Key;
Laboratory;
of;
Lake;
Science;
and;
Environment,;
Nanjing;
Institute;
of;
Geography;
and;
Limnology,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210008,;
China;
Nanjing;
Institute;
of;
Geology;
and;
Palaeontology,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210608,;
China;