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| 粤北不同密度杉木林下植被的物种多样性比较 |
| 陈春如,安伟莉,高艳芳,谢威,朱光汉,张朝明,刘日钦,张家栋,马甫林,陈羿君,何波祥,梁东成,殷祚云 |
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| (广东尚善环境建设有限公司;仲恺农业工程学院;广东省乳阳林场;广东省林业科学研究院) |
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| 摘要: |
| 粤北杉木 Cunninghamia lanceolata 次生林分布广泛，如何兼顾木材生产和生物多样性保护， 值得深入探讨。采用定位样方法，在广东韶关乳阳林场有代表性地选取 3 个不同杉木密度的林龄为 4~8 年幼龄期杉木林群落进行植物种类调查，以探讨在不同杉木密度对林下植被物种多样性的影响。结果表明：在幼龄阶段，随着杉木密度的增加，其林下植被的物种多样性和均匀度呈现出增长趋势，而秩多度曲线的陡度逐渐增加；林下植被多为唇形科、漆树科、柏科或构属、芒属、悬钩子属，适当增加这些植物种类有益于增加物种多样性；Shannon-Wiener 多样性指数与杉木密度的相关性显著，其他不显著。 |
| 关键词: 物种多样性 林分密度 林下植被 秩多度曲线 |
| DOI： |
| 投稿时间：2020-06-16修订日期：2020-07-31 |
| 基金项目:广东省教育厅省级重大项目 |
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| Comparison of Species Diversity of Understory Vegetation of Cunninghamia lanceolata with Different Densities in Northern Guangdong |
| Chen Chunru,An Weili,Gao Yanfang,Xie Wei,Zhu Guanghan,Zhang Chaoming,Liu Riqin,Zhang Jiadong,Ma Fulin,Chen Yijun,He Boxiang,Liang Dongcheng,Yin Zuoyun |
| (Guangdong Shangshan Environmental Construction Co., Ltd;Zhongkai University of Agriculture and Engineering;Guangdong Ruyang Forest Farm;Guangdong Academy of Forestry Sciences) |
| Abstract: |
| Secondary forest of Cunninghamia lanceolata Plantations are widely distributed in northern Guangdong Province. It is worth further discussion on how to take into account wood production and biodiversity protection. In order to explore the effects of different densities of C. lanceolata Forest on the species diversity of understory vegetation, three representative C. lanceolata forest communities aged 4-8 years were selected in Ruyang forest farm, Shao guan, Guangdong Province. The results showed that: In the young stage, with the density increasing of C. lanceolata，the diversity and evenness of understory vegetation showed an increasing trend. Most of the undergrowth vegetation are Labiatae, lacqueraceae, Cupressaceae or Broussonetia, Miscanthus and Rubus, appropriate increase of these plant species is beneficial to increase species diversity . And the Shannon Wiener diversity index was the most signi?cant correlation with C. lanceolata density, the others were not signi?cant. |
| Key words: species diversity stand density understory vegetation rank multiplicity curve |