Ecological impacts of water transfers on Lake Taihu from the Yangtze River, China

摘要: Abstract As an ecosystem responds to external environmental changes slowly due its reorganization compared with the water quality and it has great influence on lake ecosystems, is indispensable evaluate ecological impacts from transfers for security of source in Lake Taihu. Evaluations were conducted by comparing indicators exergy (Ex), structural (Ex st ) phytoplankton buffer capacity ( β ((TP)/(Phy)) after 2002 2007 those reference statuses where not implemented 1998 2001. Besides three indicators, affiliated such as ratio zooplankton biomass biomass, diversity index trophic state also involved evaluation. The results showed altered status had positive effects Taihu most sub-zones, Gonghu Bay, Northwest Zone, Southwest Zone Centre post-transfer period. seasonable trends indicated that health influences excluded November February was better than May August during there significant differences first second stages transfers. stage (from 2004), while opposite obtained 2005 Dongtaihu Bay East Epigeal Zone. On whole, serve deter algal congregation