由于帝俄、日本帝国主义侵略者对我国东北森林严重破坏的结果,使绰尔林区大面积的森林变成了荒山迹地,仅在交通不便的偏远地区还残存些原始林。解放后由于加强了森林保护、封山育林和各种经营措施,目前,大部分采伐迹地与火烧迹地均获得了天然更新;占旧采伐迹地面积的75%。更新起来的幼树一 As a result of the grave ruin of forests in northeast China by the imperial Russia and Japan by the Japanese imperialist aggressors, large areas of forests in the Chalulin area turned into barren hills and only some primitive forests remained in remote areas with inconvenient transportation. After the liberation, as a result of strengthening forest protection, closing off hills for afforestation and various management measures, most of the deforested land and the burned-out land have been naturally renewed at present; they account for 75% of the area of ​​the old deforested land. Updated sapling one