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- Title
择伐对紫椴次生林乔木幼苗分布格局及 种间关联性的影响.
- Authors
刘 月; 张德鹏; 及 利; 许丽颖; 董灵波; 杨立学
- Abstract
The distribtion pattern and interspecific associations of arbor seedlings were examined in two Tilia amurensis forest stands in Zhangguangcailing, with one without man-made interference (natural recovery secondary forest) and the other one being 20-year-old after selective cutting (selective cutting secondary forest). The results showed that the importance value of the seedlings of the soft broad-leaved (heliophile) and tolerant tree species was 7. 9 and 64. 5 in natural recovery secondary forest, and was 3.9 and 68.9 in selective cutting secondary forest, respectively. Most spatial distribution pattern of arbor seedlings in natural recovery and selective cutting secondary forests showed clustered distribution at the scale of 0-18 m and 0-15 m, respectively. Most of tree species, pairs were negatively correlated at large scale (14-45 m) in the natural recovery secondary forest, whereas tree species pairs at all the scales were mostly uncorrelated in the selective culling secondary forest. Most of the tree pairs of T. amurensis seedlings (57%) with other tree species showed negatively correlation at large scale (31-45 m) . In the natural recovery secondary forest, the proportion of negatively correlated tree pairs was higher than 60%. In selective cutting secondary forest, Acer mono seedlings were negatively correlated with other tree species at more scales (6-45 m). ln the natural recovery secondary forest, the pairs of A. mono and other arbor seedlings were positively correlated at small scale (0-5 m), but not at large scale (31-45 m). Therefore, selective cutting accelerated the succession of the secondary forest of T. amurensis, which induced random distribution of the arbor seedlings at the large scale (31-45 m), promoted a more coordinated inter-specific relationship, and adjusted the spatial competition between T. amurensis seedlings. Both stands were under succession, and thus suitable artificial management should be carried out to promote tree regeneration and community restoration.
- Subjects
SECONDARY forests; FOREST regeneration; FOREST succession; LINDENS; SEEDLINGS; TREE seedlings
- Publication
Yingyong Shengtai Xuebao, 2020, Vol 31, Issue 10, p3296
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202010.004