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在辽宁省本溪市草河口试验林场内设置固定标准地,观察杂木林抚育间伐效果。经过分析,中度间伐下的杂木林生长良好,活立木蓄积生长率最大,其余依次为弱度间伐区、对照区和强度间伐区。强度间伐区的草本和木本植物多样性最高,对照区、中度间伐区次之,弱度间伐区最低。从凋落物的年凋落量及贮量看,中度间伐区林地凋落物的凋落量和贮量均较合理,故认为中度间伐是适合于辽宁东部山区的森林采伐强度。
A fixed standard site was set in Caohekou Experimental Forest Farm, Benxi City, Liaoning Province to observe the effect of tearing and cutting of mixed woods. After analysis, the moderate thinning under the good growth of the miscellaneous woods, living trees the largest growth rate of accumulation, followed by weakness thinning area, the control area and the intensity of thinning area. Intensity thinning area of the highest herbaceous and woody plant diversity, control area, the second in the middle of the thinning, thinning the lowest degree of weakness. From litter annual litterfall and storage, the litterfalls and stocks of forest litter in moderate thinning area are reasonable, so it is considered that moderate thinning is suitable for the harvesting intensity of the forest in the eastern mountainous area of Liaoning.