生物多样性 ›› 2023, Vol. 31 ›› Issue (11): 23296.  DOI: 10.17520/biods.2023296

• 半湿润常绿阔叶林专题 • 上一篇    下一篇

中国中亚热带常绿阔叶林群落木本植物多样性比较

王晓凤1, 米湘成3, 王希华4, 江明喜5, 杨涛1, 张健4, 沈泽昊2,1,*()   

  1. 1.云南大学生态与环境学院, 昆明 650091
    2.北京大学城市与环境学院, 地表过程分析与模拟教育部重点实验室, 北京 100871
    3.中国科学院植物研究所植被与环境变化国家重点实验室浙江钱江源森林生物多样性国家野外科学观测研究站, 北京 100093
    4.华东师范大学生态与环境科学学院浙江天童森林生态系统国家野外科学观测研究站, 上海 200062
    5.中国科学院武汉植物园水生植物与流域生态重点实验室, 武汉 430074
  • 收稿日期:2023-08-15 接受日期:2023-11-11 出版日期:2023-11-20 发布日期:2023-12-21
  • 通讯作者: * E-mail: shzh@urban.pku.edu.cn
  • 基金资助:
    云南省科技厅-云南大学双一流学科建设重大专项(2018FY001-002);云南省基础研究计划重大项目课题(202101BC07 0002)

Comparison of woody plant diversity in the evergreen broad-leaved forest in mid-subtropical China

Xiaofeng Wang1, Xiangcheng Mi3, Xihua Wang4, Mingxi Jiang5, Tao Yang1, Jian Zhang4, Zehao Shen2,1,*()   

  1. 1 School of Ecology and Environmental Science, Yunnan University, Kunming 650091
    2 Key Laboratory of MOE for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871
    3 Zhejiang Qianjiangyuan Forest Biodiversity National Observation and Research Station, State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093
    4 Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062
    5 Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074
  • Received:2023-08-15 Accepted:2023-11-11 Online:2023-11-20 Published:2023-12-21
  • Contact: * E-mail: shzh@urban.pku.edu.cn

摘要:

常绿阔叶林是我国亚热带的地带性植被类型, 也是我国最重要的植被类型之一。常绿阔叶林植被型下各种群落类型的物种组成、结构、动态等特征已有大量研究, 本研究基于浙江的天童和古田山、湖南的八大公山以及云南的珠江源、雕翎山和鸡足山6个大型常绿阔叶林动态监测样地的调查数据, 对其木本植物的物种组成、区系成分、生长型类型百分比、种-面积关系进行了综合比较, 以期进一步了解中国中亚热带常绿阔叶林在东、中、西部地区的物种多样性差异。结果显示: (1)中国中亚热带中部的八大公山样地物种的科、属、种丰富度最高, 其次为东部的天童和古田山样地, 而西部的珠江源、雕翎山和鸡足山样地的丰富度最低, 相同植被类型样地的物种组成相似性最高, 东、中、西部的常绿阔叶林植被的物种组成存在显著的差异; (2)东部样地木本植物的科、属均以热带区系为主, 尤其泛热带分布的科、属最多, 而中、西部样地虽然以热带科为主, 但以温带属居多, 北温带分布属最多; (3)东、中部3个样地木本植物以乔木成分为主, 天童、古田山和八大公山样地乔木种比例分别是57.4%、51.6%和55.9%, 西部样地灌木(珠江源、雕翎山和鸡足山样地分别是56.9%、54.2%、48.5%)成分均高于乔木(43.1%、41.7%、42.7%), 中部样地木本植物落叶种(59.2%)占比远高于常绿种(40.8%), 东、西部样地则是常绿种比例高于落叶种, 天童、古田山、珠江源、雕翎山、鸡足山样地常绿种比例分别是51.3%、59.1%、62.7%、69.8%、58.3%; (4)八大公山和雕翎山样地的常绿种(分别有97种和67种)和落叶种(141种, 29种)在数量上差距最大, 雕翎山和珠江源样地的常绿种(69.8%, 62.7%)和落叶种(30.2%, 37.3%)在比例上差距最大。上述研究结果反映了中国中亚热带典型常绿阔叶林、山地常绿落叶阔叶混交林、半湿润常绿阔叶林的群落物种组成、物种多样性和群落结构的差异, 为指示中亚热带常绿阔叶林植被从东到西的物种周转特征和植被变化规律提供了科学依据。

关键词: 动态监测样地, 物种组成, 区系成分, 生长型, 种-面积曲线

Abstract

Aims: The evergreen broad-leaved forest is a zonal vegetation type in the subtropical region of China. Evergreen broad-leaved forests are widely distributed in China, so a variety of vegetation subtypes are available. This study aims to discuss the differences between evergreen broad-leaved forest communities from the eastern coast to the western interior.

Methods: We selected Tiantong, Gutian Mountains (GTS), Badagongshan Mountains (BDGS), Zhujiangyuan (ZJY), Diaoling Mountains (DLS) and Jizu Mountains (JZS) forest dynamics plots as the research objects. Based on nationally available data on woody plants in the six plots, we first unified the species’ names and counted the number of families, genera, and species of each plot. Then we investigated the distribution type and growth-form of all species. Based on these results, we compared the species composition and structure differences of six plots by Jaccard similarity analysis, the redundancy analysis, and the species-area curve analysis.

Results: The results showed: (1) The richness of woody plants in the BDGS plot was the highest, followed by TT plot, GTS plot, JZS plot, DLS plot and ZJY plot. The species composition of evergreen broad-leaved forests in the eastern region of mid-subtropical China is significantly different from that in the western region, with species belonging to the same vegetation subtype being more similar. (2) On the composition of growth form spectrum, the woody plants in the plots of the eastern region mainly belong to tropical families and tropical genera, with most families and genera distributed in the Pantropic zone. In other plots, the woody plants mainly belonged to tropical families but most belonged to temperate genera within the tropical families, with the most genera distributed in the Northern Temperate zone. (3) Plots in the eastern and central regions hold more trees than shrubs, while in the western region, plots hold more shrubs than trees. Only the BDGS plot holds more deciduous woody plants (59.2%) than evergreen woody plants (40.8%), while in other plots, the opposite is true. (4) The BDGS plot differs the most in the richness of evergreens (97) and deciduous woody plants (141), while the DLS plot differs the most in the proportion of evergreens (69.8%) and deciduous woody plants (30.2%).

Conclusion: Our results reflect the differences in community species composition, species diversity, and community structure among typical evergreen broad-leaved forests, mixed evergreen and deciduous broad-leaved forests, and semi-humid evergreen broad-leaved forests in mid-subtropical China. The study supplements the comparative analysis among multiple vegetation subtypes in evergreen broad-leaved forests and provides a scientific basis for revealing the species turnover characteristics and change patterns among evergreen broad-leaved forests from the eastern to the western region in mid-subtropical China.

Key words: forest dynamics plot, species composition, floristic components, growth-form, species-area curve