林业科学 ›› 2025, Vol. 61 ›› Issue (3): 72-85.doi: 10.11707/j.1001-7488.LYKX20240556
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
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:
Zihan Cheng1,Jinchi Zhang1,*(),Jiang Jiang1,Miaojing Meng1,*(
),Jiayin Li1,Mei Luo1,Xianghua Fang2
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。
中图分类号:
程子翰,张金池,姜姜,孟苗婧,李珈印,罗梅,方向华. 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[J]. 林业科学, 2025, 61(3): 72-85.
Zihan Cheng,Jinchi Zhang,Jiang Jiang,Miaojing Meng,Jiayin Li,Mei Luo,Xianghua Fang. Spatial Distribution Pattern and Correlation of Dominant Species at Different Vertical Levels in Baishanzu Mid-Mountain Evergreen Broad-Leaved Forest[J]. Scientia Silvae Sinicae, 2025, 61(3): 72-85.
表1
样地不同高度层次树木的种群数量特征"
高度层次 Height level | 树高划分 Tree-height division/m | 优势种 Dominant species | 物种数 Species numbers | 平均胸径 Mean DBH/cm | 平均树高 Mean tree height/m |
上层 Upper layer | H > 10 | 光皮桦+木荷+甜槠 Betula luminifera + Schima superba + Castanopsis eyrei | 62 | 17.06 | 17.40 |
中层 Intermediate layer | 5 < H ≤ 10 | 鹿角杜鹃+木荷+甜槠 Rhododendron latoucheae + S. superba + C. eyrei | 95 | 5.38 | 6.92 |
下层 Lower layer | H ≤ 5 | 鹿角杜鹃+木荷+马银花 R. latoucheae + S. superba + Rhododendron ovatum | 93 | 3.10 | 3.51 |
表2
样地重要值前10位的主要物种"
物种 Species | 多度 Abundance | 平均胸径 Mean DBH/cm | 相对多度 Relative abundance(%) | 相对频度 Relative frequency(%) | 相对显著度 Relative dominance(%) | 重要值 Importance value(%) |
木荷Schima superba | 910 | 5.30 | 15.24 | 3.26 | 10.92 | 9.81 |
甜槠Castanopsis eyrei | 498 | 6.96 | 8.34 | 3.26 | 10.22 | 7.27 |
鹿角杜鹃Rhododendron latoucheae | 750 | 4.03 | 12.56 | 2.99 | 3.68 | 6.41 |
光皮桦Betula luminifera | 107 | 20.53 | 1.79 | 2.34 | 11.73 | 5.29 |
马银花Rhododendron ovatum | 576 | 3.72 | 9.65 | 2.86 | 2.14 | 4.88 |
格药柃Eurya muricata | 494 | 3.55 | 8.27 | 3.13 | 2.18 | 4.53 |
石栎Lithocarpus glaber | 145 | 12.47 | 2.43 | 2.60 | 8.53 | 4.52 |
青冈Quercus glauca | 236 | 7.56 | 3.95 | 2.47 | 6.63 | 4.35 |
鹅耳枥Carpinus turczaninowii | 162 | 9.52 | 2.71 | 2.99 | 5.19 | 3.63 |
蓝果树Nyssa sinensis | 45 | 22.74 | 0.75 | 1.56 | 6.73 | 3.02 |
图5
在完全空间随机(CSR)零模型下各高度层次优势种的空间分布格局 A:下层优势种;B:中层优势种;C:上层优势种;O:该层次内的所有优势物种;Ro:马银花;Ss:木荷;Rl:鹿角杜鹃;Bl:光皮桦;Ce:甜槠。A: Dominant species in the lower layer; B: Dominant species in the intermediate layer; C: Dominant species in the upper layer; O: All dominant species within this layer; Ro: Rhododendron ovatum; Ss: Schima superba; Rl: Rhododendron latoucheae; Bl: Betula luminifera; Ce: Castanopsis eyrei."
图6
在异质泊松(HP)零模型下各高度层次优势种的空间分布格局 A:下层优势种;B:中层优势种;C:上层优势种;O:该层次内的所有优势物种;Ro:马银花;Ss:木荷;Rl:鹿角杜鹃;Bl:光皮桦;Ce:甜槠。A: Dominant species in the lower layer; B: Dominant species in the intermediate layer; C: Dominant species in the upper layer; O: All dominant species within this layer; Ro: Rhododendron ovatum; Ss: Schima superba; Rl: Rhododendron latoucheae; Bl: Betula luminifera; Ce: Castanopsis eyrei."
图7
各高度层次优势种基于胸径的单变量标记点格局分析 A:下层优势种;B:中层优势种;C:上层优势种;O:该层次内的所有优势物种;Ro:马银花;Ss:木荷;Rl:鹿角杜鹃;Bl:光皮桦;Ce:甜槠。A: Dominant species in the lower layer; B: Dominant species in the intermediate layer; C: Dominant species in the upper layer; O: All dominant species within this layer; Ro: Rhododendron ovatum; Ss: Schima superba; Rl: Rhododendron latoucheae; Bl: Betula luminifera; Ce: Castanopsis eyrei."
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