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林业科学 ›› 2025, Vol. 61 ›› Issue (3): 72-85.doi: 10.11707/j.1001-7488.LYKX20240556

• 研究论文 • 上一篇    下一篇

百山祖中山常绿阔叶林不同垂直层次优势种空间分布格局及关联性

程子翰1,张金池1,*(),姜姜1,孟苗婧1,*(),李珈印1,罗梅1,方向华2   

  1. 1. 南京林业大学林草学院、水土保持学院 南方现代林业协同创新中心 江苏省水土保持与生态修复重点实验室 南京 210037
    2. 丽水职业技术学院 丽水 323000
  • 收稿日期:2024-09-25 出版日期:2025-03-25 发布日期:2025-03-27
  • 通讯作者: 张金池,孟苗婧 E-mail:zhang8811@njfu.edu.cn;275536122@qq.com
  • 基金资助:
    百山祖国家公园科学研究项目(2022JBGS03,2022JBGS06,2021ZDLY01)。

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

摘要:

目的: 研究百山祖国家公园中山常绿阔叶林不同高度层次优势物种的空间分布格局及关联性,以理解群落垂直结构中各层次的生存策略、竞争机制,加深对区域群落构建和多样性维持机制的理解。方法: 基于百山祖国家公园中山常绿阔叶林群落1 hm2监测样地调查数据,通过树高划分,对各高度层次中重要值排名前3位的优势种个体进行分析,采用成对相关函数g(r)以及基于胸径的标记相关函数kmm(r)分析各高度层次优势种群空间分布格局及层间关联性,采用Spearman秩相关系数分析各层次种群数量分布与地形因子的相关性。结果: 群落优势种群受环境因素影响,其个体数量分布与地形因子呈现正相关;群落各层次优势种群的空间分布格局呈现由低尺度的聚集分布转变为高尺度的随机或均匀分布的趋势,去除生境异质性影响后,聚集分布的尺度范围降低;上层与中层、下层优势种群在低尺度负关联;基于胸径的标记点格局分析中,中层、下层个体在层内及层间于低尺度存在一定负关联。结论: 百山祖国家公园中山常绿阔叶林群落优势种群呈现低尺度聚集分布、高尺度随机或均匀分布的空间格局,上层种群对近距离中层、下层个体生长发育产生限制,中层、下层种群存在低尺度上个体间的资源竞争现象。

关键词: 群落结构, 空间分布格局, 空间关联性, 标记相关函数, 中山常绿阔叶林

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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