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| 粤北车八岭杉木人工林物种多样性及优势植物种群结构 |
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宋相金,束祖飞,戴文坛,陈伟霖,方碧真,覃希,缪绅裕
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广东车八岭国家级自然保护区,广东车八岭国家级自然保护区,广州大学 生命科学学院,广州大学 生命科学学院,广州大学 生命科学学院,广州大学 生命科学学院,广州大学 生命科学学院
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| 摘要: |
| 基于 1 hm2 的固定样地数据，对广东车八岭国家级自然保护区人工杉木（Cunninghamia
lanceolata）林的物种多样性及优势阔叶植物种群的年龄结构和高度结构等特征进行了分析，以探讨群
落的自然演替进程。结果表明：样地中胸径≥ 1.0 cm 的植物共 62 种，个体总数 3 740 株，其中杉木占
57.03%，重要值为 50.51；其他 7 种优势阔叶植物的重要值之和为 29.72；杉木林乔木层的 Gleason 指
数、 Simpson 指数、 Shannon-Wiener 指数和 Pielou 均匀度指数分别为 6.732、 0.655、 1.884 和 0.456；优势
阔叶植物种群中，赤杨叶（Alniphyllum fortunei）是典型的衰老种群；枫香（Liquidambar formosana）为
稳定至衰老种群；檵木（Loropetalum chinense）、油茶（Camellia oleifera）、野柿树（Diospyros kaki var.
silvestris）为基本稳定种群；木荷（Schima superba）和华润楠（Machilus chinensis）为增长种群；各植物
种群高度结构特征表现不同，只有杉木种群在 10.0 m 及以上的高度结构与整个群落相似。经过 30 a 的自
然演替，杉木的重要值仍大于 50，群落的针叶林性质未变，属于向地带性植被常绿阔叶林过渡的早期阶
段；虽然出现了赤杨叶、枫香、檵木等优势阔叶树种，但它们在群落中未达到杉木的建群种地位。 |
| 关键词: 杉木人工林 物种多样性 优势植物种群 年龄结构 高度结构 车八岭 |
| DOI： |
| 分类号: |
| 基金项目:广东车八岭国家级自然保护区森林资源调查与培育项目(SX15GZ022) |
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| Species Diversity and Structure of Dominant Species Populations of Cunninghamia lanceolata Plantation at Chebaling in Northern Guangdong |
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SONG Xiang-jin,SU Zu-fei,DAI Wen-tan,CHEN Wei-lin,FANG Bi-zhen,QIN Xi and MIAO Shen-yu
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Chebaling National Nature Reserves,Guangdong,Chebaling National Nature Reserves,Guangdong,School of Life Sciences,Guangzhou University,School of Life Sciences,Guangzhou University,School of Life Sciences,Guangzhou University,School of Life Sciences,Guangzhou University,School of Life Sciences,Guangzhou University
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| Abstract: |
| Based on the data of 1 hectare permanent sample plot, the age structure and height structure of
dominant broadleaved species populations,and species diversity within Cunninghamia lanceolata plantation
at Chebaling National Nature Reserve of Guangdong were analyzed, so as to explore the natural succession
process of the community. Results showed that there were 62 plant species with diameter of breast height more
than one centimeter and the total individual number was 3 740. The C. lanceolata accounted for 57.03%, and its
important value was 50.51, while the total important value of other seven broadleaved species was 29.72. The
Gleason index, Simpson index, Shannon-Wiener index, and Pielou evenness index of C. lanceolata forest arbor
layer was 6.732, 0.655, 1.884, and 0.456, respectively. Among the dominant broadleaved species population, theAlniphyllum fortunei population was typical declined population,and the Liquidambar formosana population was
stable to declined population, while the populations of Loropetalum chinense, Camellia oleifera, and Diospyros
kaki var. silvestris were basically stable, and the populations of Schima superba and Machilus chinensis showed
increasing types. They had own characteristics of height structure for different plant populations, but only the
population of Cunninghamia lanceolata was similar to the whole forest in the height structure above 10 m. After
30 years natural succession, the important value of Cunninghamia lanceolata was still greater than 50, and the
coniferous forest of the community had not changed, which belongs to the early stage of succession to the zonal
vegetation of evergreen broadleaved forest. Although there appeared dominant broad-leaved tree species, such
as Alniphyllum fortunei, Liquidambar formosana, Loropetalum chinense, etc, they did not reach the level of
Cunninghamia lanceolata to constructive species in the community. |
| Key words: Cunninghamia lanceolata plantation species diversity dominant plant population age structure height structure Chebaling |
