关键词: 啮齿类, 区系组成, 景观, 地理区划

Abstract: The authors made an investigation on fauna distribution in Huangcang Valley, XiaoCounty Huaibei Anhui Province'in Sept.1995.The authors divided this small geographically monotonousvalley into three sections as their landscape variations: conifer tree area, decidous-broadleaf tree area andcultivated & uncultivated land area.A total number of 119 rodent specimens in 7 species were caught.The rodent desity was 19.83% in the cultivated & uncultivated land-the highest among the threeareas.Apoemu agrarius, being the dominate species, 58.34% ocupation in rodent population.The rodent density in decidous-broadleaf tree area was 13.53% and 72.98% of which was ocupied by Rattusnivirenter.The lowest density was found in conifer tree area.It was only 7.53% with dominant Apodemus draco taking 61.90% ocupation.The Rattus niviwnter & Apodemus draco were the first time tohave been found in Huaibei Anhui Province.Of all the 7 species, one belongs to Oriental realm species;three are widely spread species; three are Palaearctic species.The authors consider that the fauna distribution in Huangcang Valley falls into Palaearctic realm according to total composition and dominant species,however there is obvious color of transition.