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通过10年的鼠情监测,发现长江三峡宜昌地带鼠类种群密度野外与室内的变动趋势不一致。野外鼠类密度高峰在1983～1984年,达11.54～24.49%,其他年份在4～7.5%之间波动;主要影响因素是非密度制约因素,但密度制约因素亦有一定影响。室内鼠类种群数量变动的规律不明显,但密度普遍较野外高(1984年除外)。室内优势种为黄胸鼠、褐家鼠和小家鼠,野外是黄毛鼠和黑线姬鼠,但存在交替更换现象。黑线姬鼠、黄毛鼠、黄胸鼠、褐家鼠、小家鼠的孕鼠最高胎数分别为11、12、12、14和9。
After 10 years of monitoring of the rat population, it was found that there was an inconsistent trend in the field and indoor fluctuation of rodent population density in the Three Gorges area of the Yangtze River. In the wild, the density of rodents peaked at 11.54-24.49% in 1983-1984 and fluctuated between 4-7.5% in other years. The main influencing factors were the non-density factors, but the density constraints also had a certain impact. The pattern of indoor mouse population changes is not obvious, but the density is generally higher than the wild (except 1984). Indoor dominant species Rattus flavipectus, Rattus norvegicus and Mus musculus, the field is Rattus norvegicus and Apodemus, but there is an alternation phenomenon. The highest number of pregnant mice of Apodemus agrarius, Rattus rat, Rattus flavipectus, Rattus norvegicus and Mus musculus were 11, 12, 12, 14 and 9, respectively.