关键词: 鼠形啮齿类, 群落结构, 种多样性, 相对丰盛度, 密度, 生物量

Abstract: The paper deals with the community structure of myomorpha rodents captured by snap -traps in the tropical mountainous rain forest and the subtropical mountainous evergreen broad-leaved forest. The field work prooeeded in Jinghong County (22°13'N, 100°40'E, 900°m above sea level), in Dec., 1984, and in Jingdong County (24°32'N, 101°02'E, 2400m), from May to June, 1981. The results are as follows:1. There are 6 species in the tropical forest and the capture rate is 3.35% . The relative abundance of dominant species, Rattus niviventer, is 81.18% . In the subtropical forest 8 species are captured. The capture rate is 5.89% and Apodemus draco (73.63%) is the dominant species.2. Average density is 13.21 for 6 species in the tropical forest and 20.25 for 5 species in the subtropical forest. A significant difference between them has been found.3. Average biomass is 711.43 and 530.19 in the tropical forest and the subtropical forest, respectively, without significant difference.4. The distribution of biomass is highly inequable. R. niviventer accounts for 77.37% in the tropical forest and A.draco 70.43% in the subtropical forest.From the results we have studied, it can be distinguished that the marked dominance cf R. niviventer and A.draco in the biomass and relative abundance of myomorpha rodents shows that they are very important in the study of small mammal functions in those ecosystems.

Key words: Myomorpha rodents, Community structure, Species diversity, Relative abundance, Density, Biomass