近些年来,在我国东北、华北、西北等地的一些林区内,由于生态环境的变化失控,使生活在林区边缘地带的一些害鼠不断猖獗起来。这些鼠类以啃咬环剥针阔叶树的树根、茎干、幼枝的嫩皮和果实种子为食物,经常造成大面积幼林死亡和种子欠收,危害十分严重,已成为林区生产上的一大灾害。 In recent years, due to the uncontrolled changes in the ecological environment in some forest areas in northeastern China, north China and northwestern areas, some pests living on the fringe of the forest have been continuously rampant. These rodents feed on the roots, stems, young shoots and fruit seeds of ring-broached coniferous and broad-leaved trees, often resulting in the death of large-scale young forests and the lack of seeds, which have become very serious A big disaster.