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- Title
云杉华北落叶松幼苗幼树空间格局及其异质性.
- Authors
李 聪; 高润梅; 石晓东; 李 进; 张雨晴; 李红月
- Abstract
The study was conducted to examine the characteristics of natural regeneration and the spatial relation of seedlings and saplings in the mixed stand of Picea spp. + Larix principis-rupprechtii in Guandi Mountain. The spatial distribution pattern and heterogeneity of naturally occurring seedlings and saplings were studied using the method of adjacent lattice combined with the semivariance function. The results showed that the regeneration density of the understory community was 450-1 350 trees • hm-2, which was dominated by Picea spp., accounting for 81.74% of the community. The regeneration density of Picea spp. was 688 trees • hm-2, and that of L. prirzcipis-rupprechtii was 167 trees•hm-2, the latter demonstrating poor regeneration. A majority of the seedlings and saplings were clustered, and the clustering intensity gradually decreasing with increasing scale. A strong spatial autocorrelation was observed between the seedlings and saplings. Structural and random factors were responsible for 79.6% and 20.4% of variations in the distribution pattern, respectively. The spatial distribution of seedlings and saplings demonstrated anisotropy, with a dominant northeast to southwest pattern and subdominant northwest to southeast pattern. The spatial autocorrelation range of the ground diameter and tree height of seedlings and saplings were 11.25 and 13.85 m, respectively. Structural factors had a greater influence on the spatial heterogeneity, which was stronger in the horizontal direction.
- Subjects
TREE seedlings; TREE height; SEEDLINGS; LARCHES; TREES; SPRUCE; PINACEAE
- Publication
Journal of Forest & Environment, 2022, Vol 42, Issue 3, p279
- ISSN
2096-0018
- Publication type
Article
- DOI
10.13324/j.cnki.jfcf.2022.03.007