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.

结其它生态地理资料,判定沙湾县山地前山带角湾存在鼠疫自然疫源地,并认是以灰旱要贮存宿的单宿鼠疫疫源地。