Impacts of forest logging on the species diversity of endemic seed plants from Hainan Island

doi:10.3724/SP.J.1003.2012.09169

Abstract

Abstract:

Endemic seed plants are important floral components in tropical rainforests, and are often sensitive to human disturbance. However, few reports exist of the impacts of forest logging on these species. In this study, based on surveys of 164 quadrats of 25 m×25 m in Jianfengling, Hainan Island, the species composition and relationships between species richness of Hainan endemic seed plants and the total plant species richness were analyzed. Each of the 164 quadrats was grouped into one of three forest types, including old-growth, selectively logged and clear-cut forests. Then changes in species diversity were studied by comparing species-area relationships, cumulative species-individual relationships and species abundance distributions for the Hainan endemic seed plant species among the three forests types. Results highlighted the abundance and diversity of endemic seed plant species in Jianfengling. We found 158 species which acount for 40% of all endemic seed plant species found on Hainan Island, including 98 woody species (excluding lianas). Fifty-two woody endemic seed plant species (excluding lianas) from Hainan Island were recorded in the 164 quadrats; 53% of all woody endemic seed plant species in Jianfengling. Among them, Lauraceae, Fagaceae and Rubiaceae are dominant families. The richness of the woody seed plant species endemic to Hainan Island was linearly correlated with the total plant species richness in the quadrat. After forest logging, the number of woody endemic seed plant species appears to increase slightly, especially in selectively logged forests. However, the woody endemic seed plant species that appear to increase post-logging only occur in 1-2 quadrats and have relatively small and unstable populations, and may therefore disappear during forest succession. On the other hand, some endemic seed plant species still have medium populations after logging, such as Nephelium topengii, Madhuca hainanensis and Castanopsis jianfenglingensis.

Key words: Jianfengling, seed plant species endemic to Hainan Island, forest logging, species diversity

Han Xu, Yide Li, Tushou Luo, Dexiang Chen, Mingxian Lin, Huai Yang. Impacts of forest logging on the species diversity of endemic seed plants from Hainan Island[J]. Biodiv Sci, 2012, 20(2): 168-176.

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URL: https://www.biodiversity-science.net/EN/10.3724/SP.J.1003.2012.09169

https://www.biodiversity-science.net/EN/Y2012/V20/I2/168

Figures/Tables 7

References 44

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科名 Family	尖峰岭地区 Jianfengling district		164个样地 164 quadrats
科名 Family	特有种子植物 Endemic seed plant species	特有木本种子植物, 不含藤本 Woody endemic seed plant species (excluding lianas)	特有木本种子植物, 不含藤本 Woody endemic seed plant species (excluding lianas)
樟科 Lauraceae	18	18	9
壳斗科 Fagaceae	10	10	6
茜草科 Rubiaceae	19	9	5
柿树科 Ebenaceae	5	5	4
桃金娘科 Myrtaceae	8	8	3
大戟科 Euphorbiaceae	6	6	3
无患子科 Sapindaceae	4	4	3
茶科 Theaceae	3	3	3
紫金牛科 Myrsinaceae	5	5	2
冬青科 Aquifoliaceae	3	3	2
山矾科 Symplocaceae	2	2	2
蝶形花科 Papilionaceae	7	3	1
木犀科 Oleaceae	3	2	1
茶茱萸科 Icacinaceae	2	2	1
山榄科 Sapotaceae	2	2	1
瑞香科 Thymelaeaceae	2	2	1
牛栓藤科 Connaraceae	1	1	1
金楼梅科 Hamamelidaceae	1	1	1
胡桃科 Juglandaceae	1	1	1
山龙眼科 Proteaceae	1	1	1
梧桐科 Sterculiaceae	2	2	1
卫茅科 Celastraceae	2	2	0
夹竹桃科 Apocynaceae	5	1	0
唇形科 Lamiaceae	2	1	0
苏铁科 Cycadaceae	1	1	0
杜英科 Elaeocarpaceae	1	1	0
木兰科 Magnoliaceae	1	1	0
马鞭草 Vitaceae	1	1	0
莎草科 Cyperaceae	5	0	0
兰科 Orchidaceae	5	0	0
苦苣苔科 Gesneriaceae	4	0	0
棕榈科 Palmaceae	3	0	0
爵床科等6科^①	1	0	0
天南星科等11科^②	2	0	0
总计 Total	158	98	52

科名 Family	尖峰岭地区 Jianfengling district		164个样地 164 quadrats
科名 Family	特有种子植物 Endemic seed plant species	特有木本种子植物, 不含藤本 Woody endemic seed plant species (excluding lianas)	特有木本种子植物, 不含藤本 Woody endemic seed plant species (excluding lianas)
樟科 Lauraceae	18	18	9
壳斗科 Fagaceae	10	10	6
茜草科 Rubiaceae	19	9	5
柿树科 Ebenaceae	5	5	4
桃金娘科 Myrtaceae	8	8	3
大戟科 Euphorbiaceae	6	6	3
无患子科 Sapindaceae	4	4	3
茶科 Theaceae	3	3	3
紫金牛科 Myrsinaceae	5	5	2
冬青科 Aquifoliaceae	3	3	2
山矾科 Symplocaceae	2	2	2
蝶形花科 Papilionaceae	7	3	1
木犀科 Oleaceae	3	2	1
茶茱萸科 Icacinaceae	2	2	1
山榄科 Sapotaceae	2	2	1
瑞香科 Thymelaeaceae	2	2	1
牛栓藤科 Connaraceae	1	1	1
金楼梅科 Hamamelidaceae	1	1	1
胡桃科 Juglandaceae	1	1	1
山龙眼科 Proteaceae	1	1	1
梧桐科 Sterculiaceae	2	2	1
卫茅科 Celastraceae	2	2	0
夹竹桃科 Apocynaceae	5	1	0
唇形科 Lamiaceae	2	1	0
苏铁科 Cycadaceae	1	1	0
杜英科 Elaeocarpaceae	1	1	0
木兰科 Magnoliaceae	1	1	0
马鞭草 Vitaceae	1	1	0
莎草科 Cyperaceae	5	0	0
兰科 Orchidaceae	5	0	0
苦苣苔科 Gesneriaceae	4	0	0
棕榈科 Palmaceae	3	0	0
爵床科等6科^①	1	0	0
天南星科等11科^②	2	0	0
总计 Total	158	98	52

森林类型 Forest types	样地数 No. of quadrats	物种数 No. of species	个体数 No. of individuals	625 m²样地水平的物种密度 Species density per 625 m² quadrat
森林类型 Forest types	样地数 No. of quadrats	物种数 No. of species	个体数 No. of individuals	平均值±标准偏差 Mean ± SD	P^①
原始林 Old-growth forests	52	34	1,403	6.1±2.2	—
径级择伐 Selectively logged forests	73	40	2,491	6.3±1.9	0.52
皆伐 Clear-cut forests	39	32	1,306	6.1±2.4	0.89

森林类型 Forest types	样地数 No. of quadrats	物种数 No. of species	个体数 No. of individuals	625 m²样地水平的物种密度 Species density per 625 m² quadrat
森林类型 Forest types	样地数 No. of quadrats	物种数 No. of species	个体数 No. of individuals	平均值±标准偏差 Mean ± SD	P^①
原始林 Old-growth forests	52	34	1,403	6.1±2.2	—
径级择伐 Selectively logged forests	73	40	2,491	6.3±1.9	0.52
皆伐 Clear-cut forests	39	32	1,306	6.1±2.4	0.89

	原始林 Old-growth forests (%)	径级择伐 Selectively logged forests (%)	皆伐 Clear-cut forests (%)
仅在1个样地中出现的海南特有种子植物的物种数 Endemic seed plant species found only in one quadrat	11(32.4)	14(35.0)	11(34.4)
仅在≦2个样地中出现的海南特有种子植物的物种数 Endemic seed plant species found less than two quadrats	14(41.2)	22(55.0)	16(50.0)