西安铁路分局管内的西安地区各单位及家属住宅、医院、学校等均设置在西安市的市郊 ,并且较多单位和家属生活住宅区与近郊的农村、农田相邻。为了摸清管内鼠类种群 ,优势种及地区分布 ,掌握管内鼠情 ,探讨对鼠类的防制对策 ,我们于2 0 0 1年 1～ 12月进行了鼠密度及季节消长调? All units and their families ’houses, hospitals and schools in Xi’an area under the jurisdiction of Xi’an Railway Bureau are located in the suburbs of Xi’an City, and more units and families’ residential areas are adjacent to the rural areas and farmlands in the suburbs. In order to find out the distribution of rodent species, dominant species and regions in the tube, to control the rodents in the tube and to explore the control strategies for the rodents, we conducted rat density and seasonal fluctuation adjustment from January to December 2001