热带作物学报

海南桉树人工林林下植物多样性特征研究

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杜珊 , 余雪标 ^* , 史茂源 , 周华 , 陈海辉 , 黄海 , 吴金群

热带作物学报 | 种质资源与遗传育种 2023,44(1): 92-102

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热带作物学报 | 种质资源与遗传育种 2023, 44(1): 92-102

海南桉树人工林林下植物多样性特征研究

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杜珊, 余雪标^*, 史茂源, 周华, 陈海辉, 黄海, 吴金群

作者信息

海南大学林学院，海南海口　570228

杜珊（1996—），女，硕士研究生，研究方向：森林生态。

通讯作者:

*余雪标，E-mail: yuxuebiao@163.com。

Characteristics of Understory Plant Diversity of Eucalyptus Plantation in Hainan

Shan DU, Xuebiao YU^*, Maoyuan SHI, Hua ZHOU, Haihui CHEN, Hai HUANG, Jinqun WU

Affiliations

College of Forestry, Hainan University, Haikou, Hainan 570228, China

出版时间: 2023-01-25 doi: 10.3969/j.issn.1000-2561.2023.01.010

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摘要

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为探究海南桉树人工林林下植物多样性特征，对不同区域桉树人工林进行植被调查，采用标准木法和收获法相结合的方法，测定样方内地上部分的生物量，再结合灌木层、草本层α多样性指数与地上部分生物量构建综合功能指数，并比较新指数与α多样性指数。结果显示：（1）桉树人工林林下植物共101种，其中灌木层植物共49种，隶属31科45属，草本层植物共52种，隶属28科48属。（2）不同区域桉树人工林林下灌木层多样性指数差异不显著，仅临高的草本层α多样性指数显著大于其他区域，说明灌木层多样性水平相近，而草本层多样性水平更易受环境影响。（3）不同区域桉树人工林下灌木层、草本层的地上生物量分配差异显著，灌木层大于草本层，但是分配比例波动范围较大。（4）不同区域桉树人工林灌木层综合功能指数（Yd）无显著差异，临高和定安的草本层Yd指数显著大于屯昌和东方，表明不同区域桉树林灌木层的综合功能相近，草本层的综合功能则是临高和定安明显较强。（5）灌木层Yd指数与α多样性指数的相关性很强；草本层Yd指数与α多样性指数的相关性一般，与地上生物量相关性很强。结果表明，桉树林下植物多样性特征受区域环境影响，其中草本层比灌木层更易受影响；灌木层α多样性指数对Yd指数的影响更大，草本层则是地上生物量对Yd指数的影响更大。Yd指数可同时反映林下植物的α多样性水平和生物量2个方面，是评价桉树人工林林下植被生态功能的良好补充。

关键词

桉树人工林 / 林下植物 / α多样性指数 / 地上生物量 / Yd指数

Abstract

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To investigate the characteristics of plant diversity in the understory of eucalyptus plantations in Hainan, vegetation surveys were conducted in different areas of eucalyptus plantations, and the biomass of the upper part of the interior of the sample plots was measured by combining the standard wood method and the harvesting method, then theα-diversity index of the irrigation and grass layers was combined with the biomass of the above-ground part to construct a comprehensive functional index, and the new index was compared with the α diversity index. There were 101 species of understory plants in eucalyptus plantation, among which 49 species appeared in shrub layer, belonging to 45 genera of 31 families, and 52 species appeared in herb layer, belonging to 48 genera of 28 families. There was no significant difference in the diversity index of understory shrub layer in different regions of eucalyptus plantations. The α diversity index of herbaceous layer in Lingao was significantly higher than that of other areas. It means the diversity level of shrub layer was similar, while the diversity level of herb layer was more affected by environment. There were significant differences in aboveground biomass allocation between shrub layer and grass layer in different regions. Although shrub layer was larger than herb layer, the distribution ratio fluctuated widely. Yd indices of shrub layer of eucalyptus plantations in different areas had no significant difference, and Yd indices of herb layer in Lingao and Ding'an were significantly higher than those in Tunchang and Dongfang. It means that the ecological functions of shrub layer in different areas were similar, while the ecological functions of herbaceous layer were obviously stronger than those of Lingao and Ding'an. The Yd index of the shrub layer was strongly correlated with the α-diversity index; the Yd index of the herb layer was generally correlated with the α diversity index and strongly correlated with above-ground biomass. The results show that the plant diversity characteristics of the eucalyptus understory are influenced by the regional environment, with the herbaceous layer being more susceptible than the shrub layer; the α-diversity index of the shrub layer has a greater influence on the Yd index, while the above-ground biomass of the herbaceous layer has a greater influence on the Yd index. The Yd index can reflect both the α-diversity level and biomass of the understory, and is a good complement to evaluate the ecological functions of the understory vegetation of eucalyptus plantations.

Key words

eucalyptus plantation / understory plant / α species diversity index / aboveground biomass / Yd index

引用本文

杜珊, 余雪标, 史茂源, 周华, 陈海辉, 黄海, 吴金群. 海南桉树人工林林下植物多样性特征研究. 热带作物学报, 2023 , 44 (1) : 92 -102 . DOI: 10.3969/j.issn.1000-2561.2023.01.010

Shan DU, Xuebiao YU, Maoyuan SHI, Hua ZHOU, Haihui CHEN, Hai HUANG, Jinqun WU. Characteristics of Understory Plant Diversity of Eucalyptus Plantation in Hainan[J]. Chinese Journal of Tropical Crops, 2023 , 44 (1) : 92 -102 . DOI: 10.3969/j.issn.1000-2561.2023.01.010

基金

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横向科研项目“桉树人工林生态环境影响监测”(RH2000008400)

参考文献

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2023年第44卷第1期

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文章信息

doi: 10.3969/j.issn.1000-2561.2023.01.010

接收时间：2022-02-21
首发时间：2026-03-05
出版时间：2023-01-25

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收稿日期：2022-02-21
修回日期：2022-05-31

基金

横向科研项目“桉树人工林生态环境影响监测”(RH2000008400)

作者信息

海南大学林学院，海南海口　570228

通讯作者:

*余雪标，E-mail: yuxuebiao@163.com。

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https://castjournals.cast.org.cn/joweb/rdzwxb/CN/10.3969/j.issn.1000-2561.2023.01.010

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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