Spatial Pattern and Association of Main Species in Endangered Plant Sinojackia rehderiana Community
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    Abstract:

    In order to understand the species coexistence mechanism of Sinojackia rehderiana community in Yongxiu County of Jiangxi Province, the spatial distribution pattern and associations of 5 main species in 0.5 hm2 plot of S. rehderiana community were studied. The results showed that the vertical structure of the community was evident, Cinnamomum camphora and Celtis biondii were in upper layer; Ilex wilsonii in middle layer, and the dominant species were S. rehderiana and Alangium platanifolium in lower layer. Celtis biondii was distributed randomly at all spatial scales, and other 4 species were clumped distribution at small scale, and showed an uniform distribution or random distribution with the increment of scale. Ilex wilsonii and A. platanifolium were negatively associated with S. rehderiana at small spatial scale. However, Cinnamomum camphora and C. biondii had negative association with S. rehderiana at large spatial scale. There was no obvious association among C. camphora, C. biondii, I. wilsonii and A. platanifolium. Therefore, it was deduced that density restriction and seed diffusion restriction play a role in the spatial pattern formation of Sinojackia rehderiana community, and the influence of habitat heterogeneity is not obvious, and the community has not reached a stable state.

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周赛霞,彭焱松,高浦新,詹选怀,丁剑敏,廖梅英,严有光.濒危植物狭果秤锤树群落内主要树种的空间分布格局和关联性[J].热带亚热带植物学报,2019,27(4):349~358

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  • Received:September 12,2018
  • Revised:December 04,2018
  • Online: August 08,2019
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