College of Environmental Science and Engineering;
Nanjing Tech University;
Nanjing 211816;
China;
State Key Laboratory of Pollution Control and Resource Reuse;
School of the Environment;
Nanjing University;
Nanjing 210023;
China;
School of Medicine;
Nankai University;
Tianjin 300071;
China;
Department of Civil and Environmental Engineering;
Rice University;
Houston 77005;
USA;
Antibiotic resistance genes(ARGs); Extracellular antibiotic resistance; genes(eARGs); Coastal mudflats; Amplicon sequencing; Geochemical variable; Mobile genetic elements;