1.Taking the ecogeographical data into acount, the authors consider the surveyed area to be a natural focus of plague with the marmot M.baibacina as the main rservoir.

1.结合其它生态理资料,判定沙湾前带角湾存自然源,并认为是以灰旱獭为主要贮存宿主的单宿主源。