The Study in Ecology, Morphology, Structure of Cochlea and Hearing Function of Hipposideros Pratti Pratti Thomas, Rhinolophus Rouxi Sinicus Andersen and Miniopterus Schreibersi Chinensis Thomas;

The statolith microstructure may be observed by using the scanning electron microscope and the trace element can be detected by nuclear technology,and then the relationship between environmental factors and statolith length,its increments and trace elements concentration may be discussed.