Spatial distribution and beta diversity of forest communities in mountainous areas of the West Lake in Hangzhou, East China Effects of allelopathy of submerged macrophytes on the phytoplankton community collected from the west part of the West Lake wetland in Hangzhou, China The model of chlorophyll-a concentration forecast in the West Lake based on wavelet analysis and BP neural networks A PHOSPHORUS CIRCULATION DYNAMICS MODEL IN THE ECOSYSTEM FOR THE WEST LAKE AFTER DRAWING,HANGZHOU