The synthetical evaluation about that the Three Gorges Dam affects on the eco-environment of Yangtze Valley draws conclusions

they are

the unfavourable results are much more

the effects of disadvantages surpass the effects of benefits

no good result can be utilized until the project ended

but the disadvantageous effects will emerge immediately when the dam is built

however

some of them will be forever. At present

the ability of holding people has been beyond the limit in the Three Gorges area

besides that

if the big dam is built

so much effective land will be inundated

thousands of people would have to emigrate from the reservoir area. Certainly it can only be a disastrous event to have the Three Gorges Project.