Evaluation and Analysis on Aquatic Community of Typical Mountain River in the Yellow River—Taking Dayu River as an Example
Five sites were settled to monitor the species composition and community structure of aquatic in Dayu River.The assessment results indicated that 38 taxa of phytoplankton,8 species of zooplankton and 13 species of benthic macroinvertebrate were identified.The amount of phytoplankton,zooplankton and benthic macroinvertebrate were respectively between 4.29×105～2.76×106 cells/L,0.8～231.4 ind/L and 18～200 ind/m2.The biomass of phytoplankton,zooplankton and benthic macroinvertebrate were separately between 0.2～1.97,0.004～0.82 mg/L and 0.023～1.095 g/m2.The diversity evaluation results show that the diversity and richness of phytoplankton are high,indicating that the water quality is in a clean state,while the diversity of zooplankton and benthic doesn't show well.The variation pattern shows that agricultural pollution、human activity interference and habitat conditions are the main factors affecting its diversity.
Dayu RiverPhytoplanktonZooplanktonBenthic macroinvertebrateDiversity index
NETL
NSTL
万方数据
