Anthropogenic phosphorus flow analysis of Hanshan County in Anhui Province Effects of eutrophication on distribution and population density of Corbicula fluminea and Bellamya spin Chaohu Lake RS-and GIS-based study on ecological function regionalization in the Chaohu Lake Basin, Anhui Province, China Effect of straw mulch on nitrogen and phosphorus loss from farmlands in Chaohu Lake Region under natural rainfall condition Study on ecological security evaluation of the Chaohu Lake Basin Integrated matrix-hydrology-biological remediation technology for bank collapse lakeside zone of Chaohu Lake Variations of phytoplankton in Chaohu Lake in spring and summer seasons