Application of Fisher Discriminate Analysis to different grassland types in theeast area of Qinghai Lake

To identify the main trace elements of different types grassland from habitat of Przewalskis gazelle in east area of Qinghai Lake, the Fisher Discriminate Analysis was used to quantify the forage value by measuring the copper, manganese, iron, zinc, selenium and molybdenum content of mixed forage samples during summer, autumn, and winter. This study showed that test method was credible and effective, indicating that the molybdenum was the main trace element responding to grassland types except for Artemisis frigida grassland type. The established model could be used to identify the grassland type in the other regions.