School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 ChinaState Key Laboratory of Soil Sustainable Agriculture Institute of Soil Sciences Chinese Academy of Sciences Nanjing 210008 China;
School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China;
School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China;
State Key Laboratory of Soil Sustainable Agriculture Institute of Soil Sciences Chinese Academy of Sciences Nanjing 210008 China;
School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China;
(137)Cs dating; modified AHP method; environment quality comprehensive evaluation; heavy metal contamination of sediment; Lake Dianchi;