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植物研究 ›› 2024, Vol. 44 ›› Issue (5): 730-737.doi: 10.7525/j.issn.1673-5102.2024.05.010

• 生理与生态 • 上一篇    

大兴安岭绰纳河保护区植物多样性特征

张喜亭1,2, 张建宇3, 仲召亮4, 王文杰5()   

  1. 1.乐山师范学院生命科学学院,乐山 614000
    2.东北林业大学化学化工与资源利用学院,哈尔滨 150040
    3.泉州师范学院外国语学院,泉州 362000
    4.九江学院资源环境学院,九江 332000
    5.浙江农林大学林业与生物技术学院,杭州 311300
  • 收稿日期:2024-04-22 出版日期:2024-09-20 发布日期:2024-09-23
  • 通讯作者: 王文杰 E-mail:wwj225@nefu.edu.cn
  • 作者简介:张喜亭(1991—),男,讲师,主要从事植物生态学及森林土壤碳汇研究。
  • 基金资助:
    乐山师范学院高层次人才引进科研启动项目(RC2023018);国家自然科学基金项目(31670699)

Characteristics of Plant Diversity in Chuona River Reserve, Daxing'anling Mountains

Xiting ZHANG1,2, Jianyu ZHANG3, Zhaoliang ZHONG4, Wenjie WANG5()   

  1. 1.College of Life Science,Leshan Normal University,Leshan 614000
    2.College of Chemistry,Chemistry Engineering and Resource Utilization,Northeast Forestry University,Harbin 150040
    3.College of Foreign Languages,Quanzhou Normal University,Quanzhou 362000
    4.College of Resources and Environment,Jiujiang University,Jiujiang 332000
    5.College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300
  • Received:2024-04-22 Online:2024-09-20 Published:2024-09-23
  • Contact: Wenjie WANG E-mail:wwj225@nefu.edu.cn

摘要:

探究林分结构、立地条件、保护强度与植物多样性之间存在的耦合关系,有助于提升保护区植物多样性保护效果。基于此,该研究选择大兴安岭绰纳河国家级自然保护区森林群落作为研究对象,调查乔木层、灌木层、草本层植物多样性和林分结构特征,并采集土壤样品测定土壤理化性质。利用频率分布、冗余排序与方差分解分析等方法,揭示该区域植物多样性特征及其与影响因素间的耦合关系。结果表明:(1)绰纳河保护区乔木层主要树种为落叶松(Larix gmelinii),相对多度为64.35%,其次为白桦(Betula platyphylla);灌木以越橘(Vaccinium vitis-idaea)占比最高,达到72.70%;草本共记录77种,其中羊须草(Carex callitrichos)占比最大(23.72%)。(2)乔、灌、草丰富度与多样性指数由大到小排序依次为草本层、乔木层、灌木层,均匀度指数以灌木层最高。(3)方差分解分析和冗余分析结果表明,林分结构的独立效应对植物多样性变化解释量最大;草本层盖度、灌木密度、乔木树高和土壤容重与植物多样性变化关系最为紧密。通过调整林分结构来提升植物多样性是简单而又可靠的途径,上述结果为大兴安岭地区林分管理提供了数据支撑。

关键词: 植物多样性, 林分结构, 立地条件, 冗余分析

Abstract:

Exploring the coupling relationship among stand structure, site conditions, protection intensity, and plant diversity is helpful to improve the effect of plant diversity protection in protected areas. Based on this, the forest community of the Chuona River National Nature Reserve in Daxing’anling Mts was selected as the research object, the plant diversity and stand structure characteristics of the arbor, shrub, and herb layers were investigated, and the soil samples were collected and the soil physicochemical properties were determined. The frequency distribution, redundancy ranking and variance analysis were used to reveal the characteristics of plant diversity and its coupling relationship with influencing factors. The results showed that:(1)Larix gmelinii was the dominant tree species in the tree layer of Chuona River Reserve, with a relative abundance of 64.35%, followed by Betula platyphylla. The proportion of lingonberry(Vaccinium vitis-idaea) in shrubs was the highest, reaching 72.70%. A total of 77 herbs were recorded, of which Carex callitrichos accounted for the largest proportion(23.72%). (2)The order of richness index and diversity index was herb layer>arbor layer>shrub layer, and the shrub layer had the highest evenness index. (3)Redundancy analysis and variance decomposition analysis showed that the independent effects of stand structure explained the most changes in plant diversity. Herbaceous coverage, shrub density, tree height and soil bulk density were most closely related to plant diversity changes. Adjusting stand structure would be a simple and reliable way to improve plant diversity, and the above results provided data support for stand management in Daxing’anling Mts.

Key words: species diversity, stand structure, site conditions, redundancy analysis

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