闽楠人工林外天然更新幼苗及幼树空间分布研究  

Study on the Spatial Distribution of Natural Regeneration Seedlings and Treelet in the Planted For⁃est of Phoebe bournei

作　　者：林照授 Lin Zhaoshou(Taoyuan National Forest Farm of Datian in Fujian Province,Datian 366101,China)

机构地区：[1]福建省大田桃源国有林场,福建大田366101

出　　处：《安徽农学通报》2020年第11期75-76,82,共3页Anhui Agricultural Science Bulletin

摘　　要：基于闽楠人工林林缘外样地,运用8种聚集度指标分析了闽楠天然更新的幼苗幼树空间分布类型及聚集强度,对比分析4个样带的更新数量情况,研究闽楠林缘外更新规律。结果表明,从林缘到林外闽楠天然更新的幼苗幼树的空间分布格局,越远离林缘,聚集度越小,更新数量越少。Based on Forest edge sample plot of the planted forest of Phoebe Fujian. This paper studies the law of the regeneration outside the edge of Phoebe bournei, and clarifies the regeneration effect of Phoebe bournei, which pro vides a theoretical basis for the observation of the forest regeneration outside the edge of Phoebe bournei and the ex pansion direction of Phoebe bournei regeneration. In this paper, 8 aggregation indexes were used to analyze the spa tial distribution type and aggregation intensity of young seedlings in natural regeneration of Phoebe bournei, and the regeneration quantity of 4 transects was compared and analyzed. The results showed that the spatial distribution pat tern of the young seedlings from the edge of the forest to the outside of the forest, the farther away from the edge of the forest, the smaller the aggregation degree and the less the number of regeneration.

关 键 词：闽楠 人工林 天然更新 空间分布 

分 类 号：S79[农业科学—林木遗传育种]