关键词: 鼠类, 种群, 生物量, 肥满度

Abstract:

Objective To investigate the faunal characteristics of rodent community in Haidong area of Qinghai province. Methods The night trap method was used to determine the quantity of rodent populations at different habitats in this area as the basis for ecological analysis. Results A total of 427 rodents were captured in Haidong area, which belonged to 15 species, 6 families and 2 orders, including 82 rodents of 7 species in mixed conifer forests with a capture rate of 3.90%; 112 rodents of 6 species in forest edge scrubs with a capture rate of 4.53%; 77 rodents of 7 species in alpine shrubs with a capture rate of 3.35%; 95 rodents of 7 species in alpine grasslands with a capture rate of 2.94%; and 61 rodents of 9 species in residential farmlands with a capture rate of 2.60%. The highest biomass (35.95) of rodent community was observed in alpine grasslands, followed by that in forest edge scrubs (34.70) and lowest in alpine shrubs (21.59). The fatness of Mus musculus and Rattus norvegicus peaked in residential farmlands at 5.18 and 4.05, respectively; the fatness of Cricetulus longicaudatus peaked in alpine grasslands at 3.80; and the fatness of Apodemus peninsulae peaked in forest edge scrubs at 2.97. The biomass and fatness of one species varied and diversified in characteristics at different habitats. Conclusion The faunal composition of rodent populations is complicated in Haidong area of Qinghai province. Upcoming anti-rodent work should be focused on reducing the density of predominant species and preventing the occurrence of rodent infestation.

Key words: Rodent, Species, Biomass, Fatness