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探讨了大面积纯林形成的原因及由此带来的生态问题,提出了调整林分树种组成的几项措施,包括:依据当地天然林的树种组成,配置造林树种;人工林天然化,对不同树种进行团块状、带状或根据地形进行不规则混交;补植造林,与原有天然更新树种混交,并进行封山育林;幼林抚育时要保留一定数量的非目的树种,丰富林分的物种多样性,增强森林的自控能力;成熟林实行块状择伐,保留天然更新幼树或补植与原有植被形成混交林。
The reasons for the formation of large-area pure forests and the resulting ecological problems are discussed. Several measures are proposed to adjust the composition of stand-tree species, including: afforestation of tree species according to the composition of native natural forests; naturalization of plantation, The different tree species are agglomerated, banded or irregularly mixed according to the terrain; replanting and afforestation, mixed with the original natural regeneration tree species, and closed hillside afforestation; Young forest tending to retain a certain number of non-target species, rich forest species Diversity and enhance the ability of self-control of the forest. The mature forest implements the block-selective cutting, keeping the natural regeneration sapling or replanting and the original vegetation to form the mixed forest.