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本文运用动态竞争可比性林木分级法，对天然赤松林进行了立木分级。通过立木级归纳认为，东宁现有天然赤松林种群划分为三类，且有从A型种群经B型种群阶段向C型种群发展的趋势。还对各类型种群的特点、发展趋势及经营方向进行了深入的讨论，并分析了各立木级组成对天然赤松种群生产力的影响。
In this paper, dynamic competition can be compared with the forest grading method, the natural Pinus densiflora forest classification. According to the inducement of standing tree, the existing natural Pinus densiflora population in Dongning is divided into three types, and there is a tendency from type A population to type C population through stage B population. The characteristics, development trends and operating directions of various types of populations were also discussed in depth, and the effects of each standing grade on the productivity of natural Japanese red cedar were analyzed.