关键词: 鼠类, 种群数量变动, 生态学优势鼠种, 密度制约因素

Abstract: A rodent infestation for ten years in Yichang area on the Three gorges of the changjiang river was carried out in the period of 1980-1982. The results were that the quantity change of rodent in wild was not the same as the rodent in family. The density of rodent in wild was higher in 1983-1984 (11.54-24.49%), it was 4-7.5% in other years. The main effect factors of the quantity change of rodent were "nondensity dependent factor" and the density dependent factors had some effect also. The regularity of quantity change of the rodent in domestic was not obvious and the density was higher than the wild, all the years except 1984. The main species in wild were Apodemus agrarius, Rattus losea and that Domestic were Rattus norvegicus, Rattus flavipectus, Mus musculus, The main species were exchange in different years. In the article, the study results of breed and other ecology of rodent in wild and domestic were reported.