| 摘要: |
| 为了揭示珠江三角洲地区广宁红花油茶 Camellia semiserrata 生境的植物群落物种组成与植物多
样性特征, 研究选择 1958 年建于东莞市黄江镇青山的广宁红花油茶林, 通过野外样方调查的方法, 统计
生境群落乔、 灌、 草、 藤层的植物科、 属、 种数量及优势种, 植物多样性指标以及垂直、 水平分布, 并
探究群落不同结构层次间植物多样性的分布特征。 研究发现, 群落乔木层和灌木层的科、 属、 种数量明
显多于草本层和藤本层, 乔、 灌、 草、 藤各层级分别以三桠苦 Melicope pteleifolia、 豺皮樟 Litsea rotundifolia var. oblongifolia、 芒萁 Dicranopteris pedata 和玉叶金花 Mussaenda pubescens 等为主要优势种; 灌木层
的 Shannon-Wiener 指数、 Margalef 物种丰富度指数以及藤本层的 Pielou 均匀度指数在各层级相应指数中
最高; 群落植株的高度及乔灌木的胸 (基) 径和冠幅峰值均位于总体分布的较低值区间。 在广宁红花油
茶生境植物群落中, 垂直分层较为清晰, 灌木层的植物多样性在各层级中最高, 群落植物的科、 属、 种
数量和多样性水平在各层次结构上呈现出分布不均衡的格局。 |
| 关键词: 珠江三角洲 广宁红花油茶 植物多样性 垂直分布 水平分布 |
| DOI：10. 20221 / j. cnki. 2096-2053. 202504011 |
| 分类号: |
| 基金项目:粤桂联合基金-面上项目 (2020A1515410007), 广东省林业科技创新项目 (2024KJCX019)。 |
|
| Plant Diversity Characteristics in the Habitat of Camellia semiserrata in the Pearl River Delta Region ———A Case Study of Qingshan Hill, Dongguan City |
|
ZHANG Jianfeng1, LIU Jun1, XU Baohua2, ZHANG Yingzhong2
|
|
1.Zhangmutou Forest Farm of Guangdong,Dongguan;2.Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou
|
| Abstract: |
| To reveal the species composition and diversity characteristics of the plant community in the habitat of Camellia semiserrata in the Pearl River Delta Region, this study selected a C. semiserrata forest stand established in 1958 at Qingshan Hill, Huangjiang Town, Dongguan City, Guangdong Province. Field surveys
were conducted to investigate the numbers of plant families, genera, and species, dominant species, plant diversity indices, as well as vertical and horizontal distribution patterns of plants in each forest layer. The results showed that the numbers of families, genera, and species were significantly higher in the arbor and shrub layers
than in the herb and liana layers. The dominant species in each layer were Melicope pteleifolia, Litsea rotundifolia var. oblongifolia, Dicranopteris pedata, and Mussaenda pubescens, respectively. The shrub layer exhibited the highest Shannon-Wiener index and Margalef species richness index among all layers, while the liana layer had the highest corresponding indices. The peak values of the height of community plants as well as the diameter at breast height (or base) and crown width of arbors and shrubs all fall within the interval of relatively low
values in the overall distribution. The vertical stratification of the community is relatively distinct, and the numbers of families, genera, and species and the diversity level exhibited an unbalanced distribution pattern in the
vertical structure in the C. semiserrata habitat of this study. |
| Key words: Pearl River Delta Camellia semiserrata plant diversity vertical distribution patterns horizontal distribution patterns |
