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Scientia Silvae Sinicae ›› 2025, Vol. 61 ›› Issue (3): 72-85.doi: 10.11707/j.1001-7488.LYKX20240556

• Research papers • Previous Articles     Next Articles

Spatial Distribution Pattern and Correlation of Dominant Species at Different Vertical Levels in Baishanzu Mid-Mountain Evergreen Broad-Leaved Forest

Zihan Cheng1,Jinchi Zhang1,*(),Jiang Jiang1,Miaojing Meng1,*(),Jiayin Li1,Mei Luo1,Xianghua Fang2   

  1. 1. College of Forestry and Grassland, College of Soil and Water Conservation, Nanjing Forestry University Co-Innovation Center for Sustainable Forestry in Southern China Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration Nanjing 210037
    2. Lishui Vocational & Technical College Lishui 323000
  • Received:2024-09-25 Online:2025-03-25 Published:2025-03-27
  • Contact: Jinchi Zhang,Miaojing Meng E-mail:zhang8811@njfu.edu.cn;275536122@qq.com

Abstract:

Objective: To explore the spatial distribution pattern and correlation of dominant species at different height levels in the mid-mountain evergreen broad-leaved forest of Baishanzu National Park, so as to understand the survival strategies and competition mechanisms of each level in the vertical structure of the community, and to deepen the understanding of the construction and diversity maintenance mechanisms of the regional community. Method: Based on the survey data of 1 hm2 monitoring plot of mid-mountain evergreen broad-leaved forest community in Baishanzu National Park, analyze the individuals of the top three dominant species in terms of importance value at each high level by tree height division. The pair correlation function g(r) and the marked correlation function kmm(r) based on diameter at breast height were used to analyze the spatial distribution pattern of dominant species at each height level and the correlation between the layers. Spearman rank correlation coefficient was used to analyze the correlation between population number distribution and topographic factors at each level. Result: The dominant species in the community are affected by environmental factors, and their individual number distribution is positively correlated with topographic factors; the spatial distribution pattern of dominant species in each level of the community showed a trend of changing from low-scale aggregation to high-scale random or uniform distribution, and after removing the influence of habitat heterogeneity, the scale range of aggregation distribution was reduced; the upper layer dominant species showed low-scale negative correlation with those in the intermediate and lower layers; in the marked point pattern analysis based on the diameter at breast height, there was some negative correlation among individuals within and between the intermediate and lower layers at the low scale. Conclusion: The dominant species of mid-mountain evergreen broad-leaved forest community in Baishanzu National Park exhibit a spatial pattern of aggregation at a low scale and random or uniform distribution at a high scale. The upper layer restricted the growth and development of individuals in the intermediate and lower layers at close distance, and there was resource competition between individuals in the intermediate and lower layers at low scale.

Key words: community structure, spatial distribution pattern, spatial correlation, marker correlation function, mid-mountain broadleaf evergreen forest

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