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通过在人工林内带状间伐开拓天然更新效应带 ,分析了赤松在不同试验地内的天然更新种群的结构与生长状况 .结果表明 :更新种群个体数量按年龄分布的曲线呈偏态分布 ,峰值偏左 ,在7年生苗木达到最高 .采伐后更新的赤松幼苗 ,地径和苗高生长在 4年生以后对环境条件的差异产生显著反应 ,7年生最为剧烈 ,不同样地中以采伐带内同龄幼苗生长分化最为严重 .带状采伐对伐前更新苗木的高生长也有很大促进作用 .更新苗木死亡的年龄主要集中在 7年生以下阶段 .因此 ,改善林地内的光照条件有利于提高更新幼苗的保存率 ,促进更新苗的生长
The structure and growth status of natural regeneration population of Pinus densiflora in different experimental sites were analyzed by means of interspaced deforestation in the plantation. The results showed that the population of updated population showed a skewed distribution according to the age distribution curve, and the peak left , And reached the maximum in 7-year-old seedlings.The seedlings of Pinus densiflora after the harvesting had a significant response to the differences in environmental conditions after 4 years of age, with the most severe 7-year-old seedlings growing in the same cutting zone The most serious differentiation.The banded cutting also had a great promotion effect on the height growth of the seedlings which were replanted before cutting.The age of the regeneration nursery stock mainly concentrated in the stage below 7 years old.Therefore, improving the light conditions in the woodland is helpful to improve the preservation rate of newer seedlings , To promote the renewal of seedling growth