Population quantity and distribution regularity of rodent animal in the cropland of edge regions of Mudanjiang City

The clip day, holedigging, irrigating and smudging methods were used to collect the samples in the cropland regions of edge regions of Mudanjiang city for determining the population quantity and distribution regularity of rodents during the period from March to November of 2010. This study showed that 7 species rodents belonging to 3 orders, 5 families, and 7 genuses were observed in this field survey. The Apodemus agrarius was the dominant species among all rodent species. The population density of rodents peaked in June-July and October. Apodemus agrarius and Cricetulus triton were the most harmful to cropland due to their food storage behavior. This study proposed the control measures for all rodents, which would provide scientific information for controlling rat trouble.