Ecological health status evaluation of Yangcheng Lake based on phytoplanktonic index of biotic integrity(P-IBI)
In order to establish phytoplankton community structure and assess ecological health in Yangcheng Lake,where stocked densely with Chinese mitten crab,2 times of phytoplankton sampling and water environmental factors measuring were conducted in July(summer)and December(winter)2022.A preliminary phytoplanktonic index of biotic integrity(P-IBI)was developed to evaluate the health of Yangcheng Lake.Results showed that P-IBI evaluation showed the health status of Yangcheng Lake in summer and winter was average and healthy,respectively.In summer,the health status in descending order was east lake,west lake,and central lake,while in winter it was west lake,central lake,and east lake.P-IBI was significantly positively correlated with transparency,flow rate,nitrate nitrogen,and total nitrogen(P＜0.01),and negatively correlated with pH,water temperature,phosphate,chlorophyll-a,and permanganate index(P＜0.01).The variation of phytoplankton community structure and biotic integrity were driven directly or indirectly by water environmental factors.
Yangcheng Lakephytoplanktonfunctional groupsphytoplanktonic index of biotic integrityhealth assessment
万方数据
维普
