Changes of Phytoplankton Community and Influencing Factors in Constructed Wetland Based on Running Water Chains of Multi Ponds:A Case Study of Shibalianwei Wetland
Shibalianwei is the estuary wetland of Chaohu lake,which was constructed based on multi-pond running water chain.In March and July 2023,physical and chemical indicators of water quality and phytoplankton community structure in four units of Shibalianwei were investigated.The results showed that the multi-pond running water chain was effective in removing nutrient pollutants,but the efficiency varied greatly between two seasons.A total of 127 species of phytoplankton from 8 phyla and 213 species from 8 phyla were identified in winter and summer respectively.In summer,Cyanobacteria were almost all dominant,while Bacillariophyta were more dominant in winter.However,Pseudoanabaena sp.became the dominant species in both two seasons,which might be in a key position in the food web.Nitrogen and dissolved oxygen are the most essential driving factors on phytoplankton community structure in winter,while COD,nitrate and total phosphorus in summer.Long-term monitoring of phytoplankton provide data support and a theoretical basis for the restoration of ecological health of Chaohu lake and its surrounding areas.
ShibalianweiMulti-pond running water chainsPhytoplanktonConstructed wetland
NETL
NSTL
万方数据
