The results showed that the trophic lenel of Lake Taihu was in the transition state, from meso-eutrophic to eutrophic,of which the meso-eutrophic made up about 70% of the total are .The eutrophic and hyper-eutrophic waters accounted for 10% or so.

• 结果表明，太湖营养水平处于中富向富营养过渡状态，中富面积约占全湖面积的70%25以上；夏季富营养及重富营养水域出现在北部湖区的梅梁湖、五里湖和西部沿岸，约占全湖面积的10%25。