Influence Of Food Supplementation Cm Population And Burrowing Behavior Of Lasiopodomys Brandtii

The fall storage and digging storehouse is very important for Brandt's voles(Lasiopodomys brandtii),which is directly related to the survival rate of it's population.In order to investigate the food factors on the population and study the burrowing behavior of Brandt's voles,this research conducted an experiment,with 8fences including 4 control groups and 4 food supplementation treatment groups,at Research Station of Animal Ecology on Grassland in Xiliguole League,Inner Mongolia in 2017.To investigate the population dynamics of Brandt's voles by using the mark-recapture method.Environmental factors were continuously recorded during the burrowing period,and soil hardness,humidity,and vegetation structure of each enclosure were simultaneously investigated.Impacts of these environmental factors on burrowing behavior were analyzed by regression analysis.Main conclusions are as follows:(1)Food supplementation treatment could significantly increase the population of the Brandt's voles(P<0.05),but it doesn't change the population ratio significantly(P>0.05).Most the age level in the control groups were in?(40.88%)and?(37.96)age group,and most the age level in the food supplementation treatment groups were?(49.50%)age group.The demand of the biomass of dicotyledon increases with the population of the Brandt's voles(P<0.05).(2)The average soil amount of digging storehouse and the total soil amount of digging storehouse of Lasiopodomys brandtii in the food supplementation treatment group were higher than those in the blank control group,but without significant difference(P>0.05).Lasiopodomys brandtii participated in digging storehouse accounted for 42.24%of the total population,and there was no significant difference between the sex ratio and the total population of Lasiopodomys brandtii participated in digging storehouse(P>0.05).Environment factors such as wind speed,daily maximum temperature and daily minimum temperature also had no significant effect on the burrowing behavior(P>0.05).The vegetation structure had no significant effect on the burrowing behavior(P>0.05).There was no significant correlation between burrowing behavior and soil hardness(P>0.05),but had significant positive correlation with soil moisture at a depth of 20 cm(y=7172.234x+5380.268,R~2=0.438,P<0.05).