The Study Of Taxology And Ecology Of Sub-aerial Blue-green Algae On Lava Of Aershan

In this paper we studied the species composition of sub-aerial blue-green algae on lava of Aershan, and the relations between ecological factors and species compositionwere also discussed and analyzed.gathering and recording and analyzing the 106 pieces of sub-aerial blue-green algae on lava of Aershan,which belongs to Sample hall of the school of life , Northeast normal university. The result shows that there are 50 species on lava of Aershan, which belong to 6 families, 15 genera.The study of taxology and ecology of sub-aerial blue-green algae of Neimenggu was comparatively deficient in the past. As a result, my research will supply datatostudy the particular function of sub-aerial blue-green in terrestrial ecosystem.Inthispaper the species composition of sub-aerial blue-green algae on lava was researched,an index on sub-aerial blue-green algae was compiled. In addition, the relations between species composition and ecological factors were also discussed and analyzed. After a detailed compare of frequencies of several species, it is discovered that Nostoc commune and Stigonema minutum have more excellent characteristics than the others to grow on lava of Aershan. They enhance the water-holding power of soil and are good sources of organic matter, therefore we can reach the conclusion that Nostoc commune and Stigonema minutum can be considered as a pioneer in the improvement of lava.