Abstract: Capillaria hepatica is one of the popular parasites to Campbell’s hamster (Phodopus campbelli). An investigation was made on the infection of C. hepatica on P. campbelli populations in Xilinguole, Inner Mongolia from 2004 to 2005. The results showed that there was a significant positive correlation between P. campbelli age and C. hepatica infective rate (r=0.97, P<0.05). Older age groups suffered more infection than relatively younger groups,while the juveniles were rarely infected. The infection index was also significantly positively correlated with age (r=0.93, P<0.05). Body mass was another indicator, which had significant positive correlations with both infective rate (r=0.99, P<0.05) and infection index (r=0.95, P<0.05). However, the population density of P. campbelli had no apparent correlation with the infective rate (r=0.27, P>0.05) and infection index (r=0.41, P>0.05).

Key words: Agro-pasture ecotone, Soil wind erosion, Vegetation cover, Soil moisture content