This research is based on the Wulong mountain pumped storage power project in Hills red soil region of Zhejiang province.First the land-use maps and vegetation maps before and after the construction are generated with ARCVEW software

by using the SPOT images in 2004 as the basic information sources

the project initial design as the bases

and by ways of material collection

field work

quadrat investigation and analysis of satellite and aero images.With these maps

three evaluation factors(land-use

vegetation and eco-integrity) are chosen to analyze the potential effect of the construction on the ecological environment.The result shows that the effect brings certain impact on land-use and vegetation of the area(namely

an increase in land-use types

a slight change in the area of each type

no change in vegetation types

and adecrease in vegetation area

biomass and productivity value).Yet the environmental effect of the project will not essentially alter the original eco-integrity of the evaluated area.The eco-system remains its complete structure and consistent operating process.