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由于森林的采伐和人工更新,改变了原来森林生态系统的条件;特别是人工纯林的出现,使得鼠类天敌(鸮、鼬、蛇)数量减少,使林木鼠害日趋严重,危及日本落叶松、长白落叶松、樟子松、油松、赤松、红松、杨树等40余种林木,因而引起多方关注。前人曾做了大量的研究工作,笔者根据吉林省临江林业局(1981～1984)、黄泥河
Due to the logging and artificial regeneration of forests, the conditions of the original forest ecosystems have been changed. In particular, the emergence of artificial pure forests has resulted in the reduction of the numbers of natural enemies (mites, weasels, and snakes), which have made the tree rodents increasingly serious and endangered Japanese larch , Larix olgensis, Pinus sylvestris var.mongolica, Pinus tabulaeformis, Pinus sylvestris, Pinus sylvestris, Pinus sylvestris, Poplar and other more than 40 kinds of trees, which attracted much attention. The predecessors have done a lot of research work, the author according to Linjiang Forestry Bureau of Jilin Province (1981 ~ 1984), Wong Nai River