Abstract:

The investigation object of this paper is the Danjiangkou Reservoir Area,which is the main submerged area and water source area of Middle Route of the SouthtoNorth Water Transfer Project.Using remote sensing as the main data source,aiming at the main ecological problems in the region,choosing precipitation and heat,land use/land cover,topography,soil erosion as assessing factors，we established comprehensive assessment model for ecological environmental quality and studied the spatial distribution of assessed results.The result showed that the quality of the Danjiangkou Reservoir Area was ordinary and slightly good as a whole,4324% area reaching good level,1006% area under relatively poor level.The condition of ecological evaluation showed vertical distribution.Good level area focused on the valley.The area between 500~1 000 m showed different environmetal quality and were vulnerable to human activities interference.Thus,more measures should be taken and adjusted to local conditions in order to make ecological environment better.