Abstract: The species composition of soil algae and corticolous algae of Liquidambar formosana, Cyclobalanopsis glauca, Pinus massoniana and Cunninghamia lanceolata in Ningguo city, Anhui Province was conducted in March 2021, the richness of aerial algae and its relationships with environmental factors were analyzed. The results showed that a total of 83 species of algae were detected in the surface soil and bark, belonging to 5 phyla, 7 classes, 21 orders, 35 families, 45 genera, dominated by Cyanophyta，Chlorophyta respectively. The richness of aerial algae in different attachment substrates was soil >bark, 22 species were present on both substrates. The dominant families of soil algae and corticolous algae were Ulotrichaceae of Chlorophyta and Chroococcaceae of Cyanophyta, respectively. The richness of soil algae was as follows, Cyclobalanopsis glauca > Liquidambar formosana > Cunninghamia lanceolata > Pinus massoniana, and the most significant correlation factors affecting its richness were ammonia nitrogen and organic matter (P<0.05). The richness of corticolous algae was as follows, Pinus massoniana > Cyclobalanopsis glauca > Cunninghamia lanceolata > Liquidambar formosana, and was not significantly affected by surface bark nutrients.

Key words: aerial algae, forest, soil algae, corticolous algae