不同森林经营模式对东北天然次生林木材收获的影响

Affect of Timber Harvest in Different Forest Management Model Natural Secondary Forest in the Northeast

以吉林省汪清县金沟岭林场典型的针叶林、阔叶林、针阔混交林3种天然次生林为研究对象,分析每种森林类型在传统经营、近自然经营、无干扰3种不同经营模式下的木材收获情况,结果表明:在针叶林、阔叶林、针阔混交林中,胸径20cm以下林木每公顷收获量排序都是无干扰>近自然经营>传统经营,且无干扰与近自然经营、传统经营差异显著;胸径20cm以上林木每公顷收获量排序和全林每公顷收获量排序均为近自然经营>无干扰>传统经营,且近自然经营与无干扰、传统经营差异显著,近自然经营模式显著的促进了大径阶林木及林分收获量量的生长,说明实行近自然经营可以提高森林质量,加快蓄积生长,是改造低质量林分的一条切实可行经营方式。

Article to 3 species typical coniferous forest, broadleaf forest, mixed coniferous natural secondary forest as the research object in Jilin Wangqing Jingouling forest farm, analysis each species forest type in traditional business, and near natu- ral business, and no interference 3 species different business mode of wood harvest situation, results indicates that： In selected forest types, trees per hectare harvest Sort interference〉nearly natural operation〉 traditional business at diameter breast height 20cm, and no interference and near natural business, and traditional business differences significantly; Diameter at breast height 20cm above forest each hectares harvest volume sort and full forest each hectares harvest volume sort are for near natural business 〉 no interference〉 traditional business, and near natural business and no interference, and traditional busi- ness differences significantly. Recent natural business model significantly contributed to the growth of large diameter class for- estry and forest harvest, the near natural operations can improve the quality of forest, accelerate growth of the accumulation, whose a practical mode of operation in transformation of low-quality stands.