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草业学报 ›› 2025, Vol. 34 ›› Issue (9): 12-25.DOI: 10.11686/cyxb2024421

• 研究论文 • 上一篇    下一篇

武功山山地草甸植物群落特征和生态位

向泽宇1(), 唐忠炳1, 彭昕桁2, 杨晓龙3, 杨创明4, 邱相东5, 陈春发1, 彭焱松1, 周赛霞1()   

  1. 1.江西省 、中国科学院庐山植物园,碳中和与生态系统碳汇江西省重点实验室,江西 九江 332900
    2.江西中医药大学药学院,江西 南昌 330004
    3.青海农牧科技职业学院农林科学系,青海 西宁 812100
    4.四川民族学院生态与农学院,四川 康定 626001
    5.赣南师范大学生命科学学院,江西 赣州 341000
  • 收稿日期:2024-10-24 修回日期:2024-12-05 出版日期:2025-09-20 发布日期:2025-07-02
  • 通讯作者: 周赛霞
  • 作者简介:E-mail: zhousx@lsbg.cn
    向泽宇(1986-),男,湖北汉川人,助理研究员,硕士。E-mail: xiangzy@lsbg.cn
  • 基金资助:
    2021年、2022年中央财政林业改革发展资金重点野生动植物保护项目和江西省教育厅科学技术研究青年项目(190781)

Plant community characteristics and niches in mountain meadows of Wugong Mountain

Ze-yu XIANG1(), Zhong-bing TANG1, Xin-heng PENG2, Xiao-long YANG3, Chuang-ming YANG4, Xiang-dong QIU5, Chun-fa CHEN1, Yan-song PENG1, Sai-xia ZHOU1()   

  1. 1.Jiangxi Provincial Key Laboratory of Carbon Neutrality and Ecosystem Carbon Sink,Lushan Botanical Garden,Jiangxi Province and Chinese Academy of Sciences,Jiujiang 332900,China
    2.School of Pharmacy,Jiangxi University of Chinese Medicine,Nanchang 330004,China
    3.Department of Agriculture and Forestry Science,Qinghai Vocational and Technical Institute of Animal Husbandry and Vet,Xining 812100,China
    4.College of Ecology and Agriculture,Sichuan Minzu College,Kangding 626001,China
    5.College of Life Sciences,Gannan Normal University,Ganzhou 341000,China
  • Received:2024-10-24 Revised:2024-12-05 Online:2025-09-20 Published:2025-07-02
  • Contact: Sai-xia ZHOU

摘要:

武功山草甸属于华东南地区少有的典型天然草地,是该区域山地生态系统类型多样性的重要组成部分。然而,目前对武功山草甸整体的植物群落组成和结构特征仍知之甚少。因此,非常有必要对武功山草甸植物群落多样性、生态位、结构质量及保护管理开展调查研究。本研究从林草交错带到山顶,在整个武功山草甸范围内沿海拔梯度设置了3个海拔样带(E1:1380~1580 m,E2:1580~1780 m,E3:1780~1918 m),每个样带设10个调查样方进行群落及地形调查,包括物种组成、高度、盖度以及样方海拔经纬度和坡度坡向,评估草甸植物群落的多样性(α和β多样性)、生态位及种间竞争的变化。研究结果发现随海拔增加草甸群落结构逐渐发生变化,其中,草甸植物群落α多样性随海拔的增加而显著增加,而群落变异性(β多样性)显著降低,且阴坡草甸植物群落具有更高的物种丰富度。草甸群落种间竞争分析表明优质禾草芒和野古草的生态位宽度和生态位重叠系数占绝对优势,是整个草甸最具代表性的优势物种;同时草甸群落环境还为3种兰科植物的生存提供了庇护场所,而入侵植物小蓬草和鬼针草在草甸群落中也较常见。对武功山山地草甸植物群落特征的总体研究表明:草甸群落结构整体质量优良,但提示草甸群落质量面临一定程度的退化风险,今后要加强综合保护和管理,特别是1800 m至最高峰(金顶)的区段,是草甸植物群落的地上生物量最大、物种多样性最丰富、群落最稳定的区域,是未来草甸保护的重点。

关键词: 武功山, 山地草甸, 多样性, 种间竞争, 生态位

Abstract:

The meadows of Wugong Mountain represent a rare typical natural grassland in southeast China, and constitute a significant part of the diversity of mountain ecosystem types in this area. However, our understanding of the overall composition and structure of the plant community in meadows on Wugong Mountain remains limited. Therefore, for appropriate conservation and management, it is important to explore the diversity, niches, and structural quality of the plant community in meadows on Wugong Mountain. Three transects (E1: 1380-1580 m, E2: 1580-1780 m, E3: 1780-1918 m) were established along an elevational gradient across the whole range of meadows from the forest-grass ecotone to the top of the mountain. Ten survey plots were established along each transect, and aspects of the community and terrain were recorded (species composition, height, and coverage, as well as the altitude, longitude, latitude, slope, and aspect of each plot). The changes in diversity (α, β), species’ niches, and interspecific competition in the meadow plant community along the elevational gradient were evaluated. The results showed that the meadow community structure varied gradually with the increase in elevation. The α diversity increased significantly with increasing elevation, whereas the community variability (β diversity) decreased significantly. The meadow plant community on shady slopes showed higher species richness. Analysis of interspecific competition in the meadow community revealed the wide niche and large overlap coefficient of the high-quality grasses Miscanthus sinensis and Arundinella hirta. These two species showed an absolute advantage and were the most representative dominant species across the meadows. The meadow community environment also provided a refuge for the survival of three orchid species (Ponerorchis gracilisPlatanthera minor, and Platanthera ussuriensis), while invasive plants such as Erigeron canadensis and Bidens pilosa were also relatively common. The results of this study show that the overall quality and structure of the plant community in meadows on Wugong Mountain are excellent, as well as, the meadow community is at risk of degradation. We recommend that comprehensive protection and management of these mountain meadows should be strengthened, especially in the section from 1800 m to the highest peak, Jinding. This area should be the key focus for meadow protection because it has the largest aboveground biomass of the meadow plant community, the richest species diversity, and the most stable community.

Key words: Wugong Mountain, mountain meadow, diversity, interspecific competition, niche