According to the remote sensing data of thermal infrared image taken by aerial imaging spectrometer

and the environment investigation data of the Douhe reservoir

we analysed the ecological environment factors which include the heat pollution of the water

the pollution of suspended material

the influence of heat radiating resulted by the growth of water plants in the reservoir. Based on that

we discussed how to control the water quality in order to make the Douhe reservoir to be the drinking water resource area for the Tangshan city

and ensure that the people of this city can use high quality drinking water from there.