Abstract
Xin'an Spring located in the cross of Lucheng,Licheng and Pinshun county in Shanxi Province,North China.The spring is a large cool spring with rich algal resources.We selected 7 sites and sampled the algae four times from 1995 to 2003.In the research,36 species of macroalgae have been identified,comprising 6 divisions,11 families and 18 genera.Chlorophyta was the most diversified division,with 19 species in 4 families and 8 genera.Cyanophyta was ranked as second,with 11 species in 2 families and 5 genera.The third was Xanthophyta,with 3 species in 2 families and 2 genera.Which was ranked as the last were Rhodophyta,Bacillariophyta and Charophyta,they respectively only have 1 species in 1 family and 1 genus.The macroalgal flora of Xin'an Spring was mainly divided into 4 kinds of communities: Cladophora community,Vaucheria community,Spirogyra-Zygnema community and Chara community.The results show that the species diversity have become reduced.
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