海南尖峰岭热带山地雨林60 hm2大样地幼苗物种组成及数量特征

doi:10.11707/j.1001-7488.LYKX20230318

Abstract

Abstract:

Objective: This paper analyzed the species composition and quantitative characteristics of seedlings in a 60 hm² plot in the tropical mountain rainforest in Jianfengling, Hainan Island, in order to further understand the community species composition and the forest natural regeneration process. Method: This study was conducted in a typical tropical mountain rainforest in Jianfengling, Hainan. The seedling dynamics in 290 sample stations (each with three 1 m×1 m small quadrats) in a 60 hm² plot was monitored for 7 consecutive years (from 2013 to 2019). All seedling species were classified into four life forms, and three mycorrhizal types and species dominance were distinguished respectively. Their species composition and quantitative dynamic changes were analyzed. Result: In the seven years, a total of 60 750 seedlings, belonging to 234 species, were recorded, including four life forms (tree, shrub, liana, and herb). There were three mycorrhizal types, including arbuscular mycorrhiza (AM). ecto-mycorrhiza (ECM), and AM & ECM mixed type. The dominant species, Psychotria asiatica and Cryptocarya chinensis, were widely distributed, occupying the top two positions in terms of importance values, abundance and frequency among all species seedlings. The distribution number of species in each seedling station was uneven. A large part of species only had sparse seedlings. Conclusion: There are abundant species of seedlings in the tropical forests and most of them are rare. This study provides important references for understanding the dynamic changes of seedling species composition, distribution and quantity characteristics at the spatial and temporal scales, and exploring their influencing factors in the future.

Key words: Jianfengling, Hainan Island, tropical mountain rainforest, seedling, species composition, quantity characteristics

CLC Number:

S718.5

Jiazhu Shi,Han Xu,Yanpeng Li,Jie Chen,Tushou Luo,Mingxian Lin,Yide Li. Species Composition and Quantitative Characteristics of Seedlings in a 60 hm² Plot in the Tropical Mountain Rainforest in Jianfengling, Hainan Island[J]. Scientia Silvae Sinicae, 2024, 60(9): 33-40.

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生活型 Life forms	样站数 Number of sample stations	相对频度 Relative frequency (%)	相对多度 Relative abundance (%)	物种数 Number of species	幼苗植株数量 Number of seedlings
草本Herb	51b	5.6a	0.4b	4c	259d
藤本Liana	289a	31.4a	22.7b	41b	13 766c
灌木Shrub	290a	31.5a	30.2a	54b	18 318b
乔木Tree	290a	31.5a	46.7a	135a	28 407a

菌根类型 Mycorrhizal types	样站数 Number of sample stations	物种数 Number of species	幼苗植株数量 Number of seedlings	相对多度 Relative abundance (%)	相对频度 Relative frequency (%)
AM	290a	215a	58 719b	96.6a	61.7a
ECM	151b	16b	1 807b	3a	32.1a
AM & ECM	29c	3c	224b	0.4a	6.2a

物种Species	样站数 Number of sample stations	重要值 Importance value (%)	相对频度 Relative frequency (%)	相对多度 Relative abundance (%)	幼苗植株数量 Number of seedling	幼苗密度 Seedling density
九节Psychotria asiatica	269	13.65	4.22	9.43	5 750	6.61
厚壳桂Cryptocarya chinensis	266	12.84	4.17	8.67	5 263	6.05
四蕊三角瓣花Prismatomeris tetrandra	223	8.97	3.50	5.47	3 320	3.82
红鳞蒲桃Syzygium hancei	157	6.65	2.46	4.18	2 539	2.92
腺叶山矾Symplocos adenophylla	190	6.34	2.98	3.36	2 038	2.34
罗伞树Ardisia quinquegona	180	6.10	2.82	3.28	1 991	2.29
白颜树Gironniera subaequalis	200	5.31	3.14	2.17	1 317	1.51
柏拉木Blastus cochinchinensis	82	3.87	1.29	2.58	1 566	1.80
黄叶树Xanthophyllum hainanense	117	3.56	1.84	1.72	1 046	1.20
红算盘子Glochidion coccineum	125	3.53	1.96	1.57	951	1.09
小计Sub-total	—	70.81	28.39	42.42	25 781	—

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Species Composition and Quantitative Characteristics of Seedlings in a 60 hm² Plot in the Tropical Mountain Rainforest in Jianfengling, Hainan Island

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Species Composition and Quantitative Characteristics of Seedlings in a 60 hm2 Plot in the Tropical Mountain Rainforest in Jianfengling, Hainan Island

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Species Composition and Quantitative Characteristics of Seedlings in a 60 hm² Plot in the Tropical Mountain Rainforest in Jianfengling, Hainan Island