一、人工林资源现状和抚育现状塞罕坝机械林场位于河北省东北部,森林资源丰富,土地总面积95078.8hm~2,其中林业用地面积87477.9hm~2,全场森林覆盖率73.4%,在林业用地面积中有林地面积69831.1hm~2,占林业用地面积的79.83%,其中商品林27484.9hm~2,中幼龄林面积19482.7hm~2,占商品林的70.89%,近熟林面积7558.35hm~2,占商品林的27.50%,成熟林面积443.0hm~2,占商 I. Status of Plantation Resources and Tending Status Saihanba Machinery Forest Farm is located in the northeastern Hebei Province with abundant forest resources. The total land area is 95078.8hm ~ 2, of which forestry land area is 87477.9hm ~ 2 and forest coverage is 73.4% The forest land area is 69831.1hm ~ 2, accounting for 79.83% of the total forest land use area, of which 27484.9hm ~ 2 is commercial forest, 19482.7hm ~ 2 is middle-aged forest, accounting for 70.89% of commercial forest and 7558.35 hm ~ 2, accounting for 27.50% of commercial forest, mature forest area 443.0hm ~ 2, accounting for business