Community characteristics of a 64-ha secondary forest dynamics plot in a tropical montane rainforest in Jianfengling, Hainan

doi:10.17520/biods.2024445

Abstract

Abstract:

Aims: Tropical rainforests are an important ecosystem because of their role in conserving species diversity and mitigating global warming. However, there have been few studies about the ability of secondary tropical forests to recover from environmental catastrophe. To fill this gap in the literature, the goal of this study was catalogue species diversity and spatial distribution in a secondary forest in Jianfengling, Hainan in order to explore the characteristics of the recovering community structure in tropical forests.

Methods: To meet this objective, a 64-ha secondary forest dynamics plot was established in a tropical montane rainforest from 2020 to 2021 in Jianfengling, Hainan. Trees with diameter at breast height (DBH) ≥ 5.0 cm were tagged and mapped, and the species of tree was identified. Finally, these survey data were analyzed based on their species diversity, importance value, and spatial distribution patterns.

Results: The results revealed that: (1) A total of 152,958 surviving trees with DBH ≥ 5.0 cm were recorded in the plot, belonging to 65 families, 153 genera, and 262 species, among which there were 80 rare species, 113 occasional species, and 69 common species. (2) There were 24 species with an importance value greater than 1.00%, with the top 5 species being Castanopsis carlesii, Gironniera subaequalis, Nephelium topengii, Cryptocarya chinensis, and Lithocarpus fenzelianus. The dominant families were Fagaceae, Lauraceae, and Symplocaceae, and the dominant genera were Castanopsis, Symplocos, and Lithocarpus. (3) The average DBH was 13.00 cm, and the DBH distribution exhibited an inverted “J” shape, indicating this secondary forest was regenerating well and maintaining its stability. (4) The dominant species in the plot exhibited aggregated distribution patterns across spatial scales from 1 m to 100 m and demonstrated a preference for certain habitats, indicating that niche differentiation plays an important role in the maintaining biodiversity in this tropical montane rainforest.

Conclusion: This study elucidates the community structure of a secondary forest in a tropical montane rainforest, which can provide scientific basis for the conservation and management of species diversity in Jianfengling, Hainan.

Key words: Jianfengling, Hainan, secondary forest, forest dynamics plot, community structure, spatial distribution pattern

Li Yanpeng, Chen Jie, Lu Chunyang, Xu Han. Community characteristics of a 64-ha secondary forest dynamics plot in a tropical montane rainforest in Jianfengling, Hainan[J]. Biodiv Sci, 2025, 33(2): 24445.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2024445

https://www.biodiversity-science.net/EN/Y2025/V33/I2/24445

Figures/Tables 8

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物种 Species	相对胸高断面积 Relative basal area (%)	相对多度 Relative abundance (%)	相对频度 Relative frequency (%)	重要值 Importance value (%)
米槠 Castanopsis carlesii	9.52	4.20	1.47	5.07
白颜树 Gironniera subaequalis	4.72	4.56	2.09	3.79
海南韶子 Nephelium topengii	3.58	3.29	1.88	2.92
厚壳桂 Cryptocarya chinensis	2.25	3.54	1.78	2.52
红柯 Lithocarpus fenzelianus	4.26	1.46	1.23	2.31
黧蒴锥 Castanopsis fissa	4.09	1.57	0.87	2.18
毛果柯 Lithocarpus pseudovestitus	3.64	1.22	1.21	2.02
薄叶山矾 Symplocos anomala	1.35	3.15	1.49	2.00
大叶蒲葵 Livistona saribus	3.41	0.86	1.03	1.77
山油柑 Acronychia pedunculata	1.17	2.02	1.49	1.56
阴香 Cinnamomum burmanni	1.02	1.74	1.39	1.38
黄叶树 Xanthophyllum hainanense	1.77	1.22	1.05	1.35
鹅掌柴 Heptapleurum heptaphyllum	1.41	1.28	1.34	1.34
木荷 Schima superba	1.50	1.39	1.10	1.33
北油丹 Alseodaphne hainanensis	1.24	1.39	1.36	1.33
腺叶山矾 Symplocos adenophylla	0.75	1.85	1.33	1.31
硬壳桂 Cryptocarya chingii	0.78	1.77	1.36	1.30
黄杞 Engelhardia roxburghiana	1.80	0.87	1.01	1.23
木姜叶柯 Lithocarpus litseifolius	1.67	0.90	0.99	1.19
双瓣木犀 Osmanthus didymopetalus	1.20	1.24	1.08	1.17
九节 Psychotria asiatica	0.39	1.84	1.25	1.16
橄榄 Canarium album	1.01	1.12	1.28	1.14
托盘青冈 Quercus patelliformis	1.40	0.79	0.95	1.05
多瓣核果茶 Pyrenaria multisepala	0.73	1.10	1.29	1.04
其他 Others	45.35	55.62	68.67	56.55
合计 Total	100.00	100.00	100.00	100.00

物种 Species	相对胸高断面积 Relative basal area (%)	相对多度 Relative abundance (%)	相对频度 Relative frequency (%)	重要值 Importance value (%)
米槠 Castanopsis carlesii	9.52	4.20	1.47	5.07
白颜树 Gironniera subaequalis	4.72	4.56	2.09	3.79
海南韶子 Nephelium topengii	3.58	3.29	1.88	2.92
厚壳桂 Cryptocarya chinensis	2.25	3.54	1.78	2.52
红柯 Lithocarpus fenzelianus	4.26	1.46	1.23	2.31
黧蒴锥 Castanopsis fissa	4.09	1.57	0.87	2.18
毛果柯 Lithocarpus pseudovestitus	3.64	1.22	1.21	2.02
薄叶山矾 Symplocos anomala	1.35	3.15	1.49	2.00
大叶蒲葵 Livistona saribus	3.41	0.86	1.03	1.77
山油柑 Acronychia pedunculata	1.17	2.02	1.49	1.56
阴香 Cinnamomum burmanni	1.02	1.74	1.39	1.38
黄叶树 Xanthophyllum hainanense	1.77	1.22	1.05	1.35
鹅掌柴 Heptapleurum heptaphyllum	1.41	1.28	1.34	1.34
木荷 Schima superba	1.50	1.39	1.10	1.33
北油丹 Alseodaphne hainanensis	1.24	1.39	1.36	1.33
腺叶山矾 Symplocos adenophylla	0.75	1.85	1.33	1.31
硬壳桂 Cryptocarya chingii	0.78	1.77	1.36	1.30
黄杞 Engelhardia roxburghiana	1.80	0.87	1.01	1.23
木姜叶柯 Lithocarpus litseifolius	1.67	0.90	0.99	1.19
双瓣木犀 Osmanthus didymopetalus	1.20	1.24	1.08	1.17
九节 Psychotria asiatica	0.39	1.84	1.25	1.16
橄榄 Canarium album	1.01	1.12	1.28	1.14
托盘青冈 Quercus patelliformis	1.40	0.79	0.95	1.05
多瓣核果茶 Pyrenaria multisepala	0.73	1.10	1.29	1.04
其他 Others	45.35	55.62	68.67	56.55
合计 Total	100.00	100.00	100.00	100.00