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以原始阔叶红松林为研究对象,采用密度依赖矩阵模型,模拟了自然生长预案下林分径级结构的动态变化,分析了一种择伐预案对林分径级结构的影响,计算了7种不同择伐强度下森林的恢复期。结果表明:原始阔叶红松林比较稳定,但也有比较缓慢的自然生长,林分株数密度呈下降趋势,符合森林的自然稀疏规律,随着时间的推移,各径阶株数的变化速度逐渐减弱,趋于稳定,验证了演替顶极理论。以生长量、收获量、保留林分结构和采伐费用为森林经营效果的评价指标,则20%的采伐强度、35年采伐周期和25%的采伐强度、45年的采伐周期的2种方案较优。
Taking the original broad-leaved Korean pine forest as the research object, the density-dependent matrix model was used to simulate the dynamic change of the stand diameter-class structure under the natural growth plan. The effect of a pre-plantion plan on the stand diameter-size structure was analyzed. The recovery period of forest under different types of selective cutting intensity. The results showed that the original broad-leaved Korean pine forest was relatively stable, but also had relatively slow natural growth. The stand density depended on the natural sparse law of the forest. With the passage of time, Tends to be stable, validated the succession theory. The growth rate, harvest volume, stand structure and harvesting cost are the evaluation indexes of forest management efficiency. The two schemes of 20% harvesting intensity, 35-year harvesting cycle, 25% harvesting intensity and 45-year harvesting cycle excellent.