Digital terrain model(DTM) was build from combining information of digital elevation model(DEM),river model,model of lake and home range around lakes,and vegetation model.DTM was applied to search potential habitat of Bar-headed Goose (Anser indicus) by using the overlap functions of Geographic Information System(GIS).The locations of potential habitat of Bar-head Goose were checked by satellite-tracking data of eleven bar-headed geese banded in Qinghai Lake.The result showed that total of 275 sites of bar-...