适宜生活水深相对较浅的小茨藻及狸藻分枝数出现显著下降（p＜0.05），

Suitable living depth relatively shallow Najas minor and bladderwrack number of branches occur decreased significantly (p <0.05), while stuckenia pectinata, Myriophyllum large Najas decreased not significant (p> 0.05), small Mainz algae fallen from 13.4 / 6.8 to strain / strains, while Myriophyllum by the initial 5.9 / strain only dropped to 5.4 / strain. In terms of biomass of submerged plants, with the increase of water level, submerged plant biomass between each sampling point decline in the deeper water depth of sampling points, submerged plant biomass decreased more, Donghu District biological minus a small amount significantly higher than Lake region (p <0.05). This indicates that the water uplift, submerged plants to adapt to the new environment by reducing the number of branches, increased plant height adjust its allocation of resources, on the whole, the water level elevation, biomass submerged plants declined, indicating that the water level is too artificial lift give submerged communities to restore or expand caused some inhibition.

The number of small algae and beaver algae branches with relatively shallow water depth satwasawas decreased significantly (p 0.05), while the decline was not significant (p.05), the number of chlorella algae decreased from the initial 13.4 to 6.8 plants, and the fox tail algae decreased from the initial 5.9 / plant to only 5.4 / plant. In terms of biomass of submerged plants, with the increase of water level, the biomass of the sunken plants between the sampling points decreased, and at the deeper the sampling point, the more the biomass of the submerged plant decreased, and the biomass reduction in the East Lake District was significantly higher than that of the West Lake Area (p 0.05). This shows that after the water lift, the submerged plant adapts to the new environment by reducing the number of branches and increasing the resource allocation of the plant higher to adjust its own resource allocation, in general, after the water level is raised, the biomass of the sedimentary plant has decreased, indicating that the artificial raising of the water level too fast has caused some inhibition to the recovery or expansion of the sedimentary plant community.

The number of branches of C. minor and C. vulgaris, which are suitable for living in relatively shallow water depth, decreased significantly (P < 0.05), but the number of branches of C. serrata, C. foxtail and C. dahuriensis did not decrease significantly (P > 0.05), the number of branches of C. minor decreased from 13.4 to 6.8 per plant, while that of C. foxtail decreased from 5.9 to 5.4 per plant. In terms of the biomass of submerged plants, with the rise of water level, the biomass of submerged plants decreased between sampling points. The deeper the water depth is, the more the biomass of submerged plants decreased. The biomass reduction of East Lake area is significantly higher than that of West Lake area (P < 0.05). This shows that the submerged plants adapt to the new environment by reducing the number of branches and increasing the plant height and adjusting their resource allocation after the water lifting. Generally speaking, the biomass of submerged plants decreases after the water level lifting, indicating that the artificial lifting of the water level too fast causes a certain inhibition phenomenon for the recovery or expansion of submerged plant community.