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- Title
福建灵源山森林群落林下灌草生态位特征.
- Authors
陈绪辉; 林碧华; 罗敏贤; 刘 宝; 刘金福; 郑世群
- Abstract
Using quantitative analysis methods, we evaluated the niche breadth, niche overlap, and niche similarity index to determine the niche of understory shrubs and herbs in a forest community of the Lingyuan Mountain in Jinjiang City, Fujian Province and provide a basis for restoring vegetation ecology. The results showed that: (1) the sum of the importance values of dominant shrubs and herbs were 70.50 and 78.34, respectively. Schefflera heptaphylla and Arundinella hirta had the largest importance values, 7.99 and 11.92, respectively. Litsea glutinosa and Miscanthus floridulus had the largest coefficient of variation, 230.17% and 296.20%, respectively. (2) Although not significantly positively correlated with the importance value, the niche breadth was significantly negatively correlated with the variance coefficient of the importance value. The niche breadths of Rhaphiolepis indica in the shrub layer and Praxelis clematidea in the herb layer were the largest with Shannon-Wiener and Levins' niche breadths of 3.32 and 22.74, and 3.24 and 22.43, respectively. These two species occupied the largest resource position in the community, but their importance values were smaller than those of some species with a small niche breadth. (3) The average niche overlaps of the dominant shrub and herb species were 0.309 and 0.211, respectively, indicating that the competition among coexisting species was not fierce and the ability to share environmental resources was weak. (4) The niche similarities of the dominant shrub and herb species were 0.311 and 0.194, respectively, and the similarity of utilization resources was low. Niche similarity was consistent with the trend of niche overlap but showed no obvious correlation with niche breadth. In summary, the competition between the shrub and herb species in the Lingyuan Mountain forest community is not intense, and the survival environment is fragile. To repair the damaged habitat, the forest community in the Lingyuan Mountain should be comprehensively nurtured and rebuilt, and the allocation of tree species at different niche levels should be emphasized to restore vegetation ecology.
- Subjects
FUJIAN Sheng (China); MOUNTAIN forests; COMMUNITY forests; MISCANTHUS; COMMUNITY life; SPECIES; COEXISTENCE of species; COMPETITION (Biology)
- Publication
Journal of Forest & Environment, 2023, Vol 43, Issue 2, p152
- ISSN
2096-0018
- Publication type
Article
- DOI
10.13324/j.cnki.jfcf.2023.02.006