Eco-environmental evaluation of Baiyangdian Watershed using GIS The diatom assemblages and their response to different environments of Baiyangdian Lake, China A study of the lowest ecological water level of Baiyangdian Lake Biomass and dynamic changes of nutritive value over different growth periods of Potamogeton crispus in Baiyangdian Lake Characteristics of rotifera community structure in the Baiyangdian Lake Preliminary Discussion of Vegetation Succession and Climate Change Since the Holocene in the Baiyangdian Lake District A comparative study on the diversity of rhizospheric bacteria community structure in constructed wetland and natural wetland with reed domination Landscape dynamics of Baiyangdian Lake from 1974 to 2007 Ecosystem health assessment in Baiyangdian Lake