Tank microcosm was used to simulate effects of different aeration ways(aerating to sediment,aerating to water) on alga communities in eutrophic landscape water body,and their affecting factors were studied.The results showed that aerating to water could greatly enhance the alga growth and make DO increase in the eutrophication process of landscape water body,and the dominant alga in water body was rapidly changed from Chlorophyta to Xanthophyta.As aerating to sediment restrained the release of P from sedime...