1978-2007年四川省开江县鼠类组成与数量变化动态研究

目的探讨开江县家、野鼠的种群组成及数量变化情况，给鼠害防制提供科学依据。方法采用夹夜法，对野外和室内鼠密度和种群进行调查。结果野外鼠密度高峰在1989—1990年和1992—1993年，达18．85％-26．57％，一般稳定在4．21％～14．88％之间；室内鼠密度高峰为1986年，达9．47％，其余年份在1．96％-7．26％之间，均较野外密度低。野外优势种为黑线姬鼠（51．59％）、四川短尾鼩（27．36％）和褐家鼠（18．68％），室内优势种为褐家鼠（64．32％）、小家鼠（26．58％）、四川短尾鼩（7．99％），但各年度优势种存在交替更换现象。结论野外鼠密度和种群变动受密度制约因素和非密度制约因素的影响，室内密度和种群变动与常年开展灭鼠工作有关。

Study on population composition and quantity change of rodents in Kaijang county of Sichuan province

Objective To study the population composition and quantity change of rodents in Kaijiang county, Sichuan province, so as to provide basic information for rodent control. Methods The rodents density was investigated by night trapping in the indoors and outdoors. Results The rodent density in the field was higher in 1989-1990 and 1992-1993, reaching about 18.85%-26.57% and steady in 4.21%-14.88%. The rodent density in the indoors was in the peak in 1986 （9.47%）, and it was 1.96%-7.26% in other years. The rodent density in the field rodent was higher than that in the indoors. The dominant species were Apodemus agrarius （51.59%）, Anourosorex squamipes （27.36%） and Rattus noregicus （18.68%） in the field. However, The dominant species in the indoors were R.norvegicus （64.32%）, Mus musculus （26.58%） and An.squamipes （7.99%）. The dominant species exchanged in different years. Conclusion The rodent density and its population dynamics were affected by density dependent factor and non-density dependent factor in the field, but that in the indoors was relative to the control of rodent.