The analysis of phytoplankton diversity in water among Xiaowutai Mountain Basin (China)

摘要

Based on the investigation of phytoplankton in 14 samples of the waters among Xiaowutai Mountain in August 2016, the species composition, evenness, abundance and diversity of phytoplankton in the Xiaowutai Mountain were studied, and then evaluated the quality conditions of water. The results showed that the samples collected from the phytoplankton survey in the Xiaowutai Mountain were identified by microscopic observation. There were 108 species of 8 phyla, among which the dominant species of cyanobacteria species accounted for 41 species, accounting for 37.96% of all species, followed by diatoms and green algae. Dominant species are mainly Microcystis flos-aquae, Anbaena circinalis, Melosira sp., Oedogonium sp., Closterium sp. There is unique geographical environment among Xiaowutai Mountain. It is a national nature reserve and is rated as the national AA level tourist scenic spot. The ecological types of phytoplankton are varied. The Diversity index was 0.687 - 4.905. The degree of evenness was 0.226 - 1.637 and the richness were 2.389-8.564.4. The diversity evenness and richness index were fluctuated in August (the wet season). The results show that most of the sampling points are not highly nutritious and the water quality is good.