深圳市桉树相思改造乡土阔叶树种混交林林下草本群落特征研究

林冉¹, 谭琳², 陶玉柱², 窦苗², 白浩楠²

1.广东省林业政务服务中心;2.体育博彩平台排名

摘要:

营造乡土阔叶人工林是华南地区自然保护区桉树、相思林改造的主要措施之一，在提高保护地森林生物多样性和生态系统稳定性发挥了重要作用。为明确乡土阔叶树人工林林下草本群落特征，对深圳田头山和大鹏半岛市级自然保护区乡土阔叶人工林林下草本群落开展调查。结果表明：深圳市级自然保护区桉树相思改造乡土阔叶树林下草本植物平均高度在0.2~120.0 cm之间，草本平均盖度在0.2%~50.0%；田头山桉树相思改造乡土阔叶树林下草本树种丰富度为22~39种，Shannon-Weiner指数在2.54~3.03之间，Simpson指数在0.86~0.92之间，Pielou指数为0.852~0.919之间，芒萁Dicranopteris dichotoma、芒Miscanthus sinensis、毛稔Melastoma sanguineum、粪箕笃Stephania longa、乌毛蕨Blechnum orientale等为优势草本植物；大鹏桉树相思低效林改造工程区草本树种丰富度在12~14种之间，Shannon-Weiner指数为2.38~2.49之间，Simpson指数在0.88~0.91之间，Pielou指数在0.91~0.98之间，乌毛蕨、玉叶金花Mussaenda pubescens、淡竹叶Lophatherum gracile、小花露籽草Ottochloa nodosa var. micrantha、薇甘菊Mikania micrantha 等为优势草本植物。

关键词: 市级自然保护区；乡土阔叶人工林；林下草本；群落特征

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基金项目：广东省林业科技计划项目（2021-KYXM-11）；广东省林业科技创新平台项目（2021-KYXM-09）

Characterization of understory Herbaceous Communities of Eucalyptus or Acacia Transforming Native Broadleaf Species Mixed Forests in Shenzhen

linran¹, tanlin², taoyuzhu², doumiao², baihaonan²

1.Guangdong Forestry Administrative Affairs Service Center;2.Guangdong Academy of Forestry Sciences

Abstract:

The creation of native broadleaved mixedforests is one of the main measures for the 体育博彩平台排名ation of Eucalyptus or Acacia plantations in nature reserves in South China, and plays an important role in improving forest biodiversity and ecosystem stability in the reserves. To clarify the characteristics of the understory herbaceous communities of native broad-leaved plantation forests, this study investigated the understory herbaceous communities of native broad-leaved plantation forests in Shenzhen Tiantu Mountain and Dapeng Peninsula municipal nature reserves. The results showed that the average height of herbaceous plants in the understory of Eucalyptus or Acacia 体育博彩平台排名ed native broadleaf forest in Shenzhen municipal nature reserves ranged from 0.2 ~ 120.0 cm, and the herbaceous average cover ranged from 0.20%~50.0%; the herbaceous species richness in the understory of Eucalyptus or Acacia 体育博彩平台排名ed native broadleaf forest in Tiantou Mountain ranged from 22 ~ 39 species, and the Shannon-Weiner index ranged from 2.54~ 3.03. Simpson’s index was between 0.86~ 0.92, Pielou’s index was between 0.852~ 0.919, with Dicranopteris dichotoma、Miscanthus sinensis、Melastoma sanguineum、Stephania longa and Blechnum orientale as the dominant herbaceous species. Dapeng Eucalyptus-Acacia low-efficiency forest renovation project area indicated that the herbaceous species richness was between 12~14 species;Shannon-Weiner’s index between 2.38~ 2.49; the Simpson index between 0.88~ 0.91, the Pielou index between 0.91~ 0.98, Herbaceous plants with allelic advantages including B.orientale、Mussaenda pubescens、Lophatherum gracile、Ottochloa nodosa var. micrantha、Mikania micrantha.

Key words: municipal nature reserve; native broadleaed plantation; understory herb; community characteristics

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