Key Laboratory of Lake and Environment;
Key Laboratory of Basin Geology;
Chinese Academy of Sciences;
Nanjing Institute of Geography and Limnology;
Nanjing;
China;
Department of Geology;
University of Dar es Salaam;
Dar es Salaam;
Tanzania;
School of Geographic and Oceanographic Sciences;
Nanjing University;
Nanjing;
China;
Farming; Systems; Agricultural; Nitrogen; Balance; Fertilization; Environmental; Pollution; Taihu;