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青海省是以喜马拉雅旱獭（以下简称旱獭）为主要贮存宿主的鼠疫自然疫源地。旱獭生活在海拔270O米以上的地区。该地区属大陆性气候，以干燥、寒冷、温差大、冬季漫长、夏季短促为特点。植被由东南部的草甸草原、灌丛草原到西北部的高山草原和高山荒漠草原。另外还分布有多种鼠
Qinghai Province is a plague natural foci with Himalayan marmot (hereinafter referred to as Marmot) as the main storage host. Marmots live in an area 270O meters above sea level. The area is a continental climate, characterized by dry, cold, large temperature differences, long winters and short summers. Vegetation from southeastern meadows, shrublands steppe to the northwestern alpine steppe and alpine desert steppes. In addition there are many kinds of rats