State Key Laboratory of Environmental Geochemistry;
Institute of Geochemistry;
CAS;
Guiyang 550081;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
CAS Center for Excellence in Quaternary Science and Global Change;
Guiyang 550081;
China;
Carbonate; weathering; Hydrochemical; variation; Biological; carbon; pump; effect; Sediment; trap; Autochthonous; organic; carbon; Carbon; sink;