植物生态学报 ›› 2025, Vol. 49 ›› Issue (12): 1973-1990.DOI: 10.17521/cjpe.2024.0466  cstr: 32100.14.cjpe.2024.0466

• 研究论文 •    下一篇

西双版纳热带森林的藤本攀附比率及其影响因素

董金龙1,2,3(), 邓云1,3,*(), 张文富1,3, 袁盛东1,3, 岩光4, 陈典5, 郭贤明4, 刘峰5,6, 林露湘1,3   

  1. 1云南省森林生态系统稳定性与全球变化响应重点实验室, 中国科学院西双版纳热带植物园, 云南勐腊 666303
    2中国科学院大学, 北京 100049
    3云南西双版纳森林生态系统国家野外科学观测研究站, 云南勐腊 666303
    4云南西双版纳国家级自然保护区科学研究所, 云南景洪 666100
    5云南纳板河流域国家级自然保护区管理局, 云南景洪 666100
    6云南省林业和草原科学院, 昆明 650041
  • 收稿日期:2024-12-23 接受日期:2025-04-08 出版日期:2025-12-20 发布日期:2025-12-29
  • 通讯作者: *邓云(dy@xtbg.org.cn)
  • 作者简介:董金龙,ORCID:0009-0006-2731-3551
  • 基金资助:
    云南省基础研究专项(202301AT070356)

Liana prevalence and its influencing factors in tropical forests of Xishuangbanna, Southwestern China

DONG Jin-Long1,2,3(), DENG Yun1,3,*(), ZHANG Wen-Fu1,3, YUAN Sheng-Dong1,3, YAN Guang4, CHEN Dian5, GUO Xian-Ming4, LIU Feng5,6, LIN Lu-Xiang1,3   

  1. 1Yunnan Key Laboratory of Forest Ecosystem Stability and Global Change, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303, China
    2University of Chinese Academy of Sciences, Beijing 100049, China
    3National Forest Ecosystem Research Station at Xishuangbanna, Mengla, Yunnan 666303, China
    4Research Institute of Xishuangbanna National Nature Reserve, Jinghong, Yunnan 666100, China
    5Administration Bureau of Yunnan Nabanhe National Nature Reserve, Jinghong, Yunnan 666100, China
    6Yunnan Academy of Forestry and Grassland, Kunming 650041, China
  • Received:2024-12-23 Accepted:2025-04-08 Online:2025-12-20 Published:2025-12-29
  • Supported by:
    Yunnan Province Fundamental Research Project(202301AT070356)

摘要:

木质藤本是热带森林生态系统的重要组成部分, 木质藤本攀附显著制约树木的生长和生物量积累。然而, 目前关于木质藤本对森林树木的攀附程度及其影响因素的研究仍较为匮乏。该研究重点探究了西双版纳热带雨林、热带低山常绿阔叶林和热带季节性湿润林3种主要热带森林类型中环境因子和树木径级梯度对藤本攀附比率的影响。以西双版纳地区的21个1 hm2森林动态样地为研究对象, 通过藤本攀附比率定量描述藤本攀附程度; 分析环境因子对藤本攀附比率的贡献大小, 并探索藤本攀附比率随树木径级的变化趋势。结果表明: 藤本攀附比率表现为热带季节性湿润林(27.8% ± 9.2%) >热带雨林(25.2% ± 10.6%) >热带低山常绿阔叶林(12.5% ± 10.7%); 以最冷月最低气温、最冷季度平均气温和最干季度平均气温等气温因子为正载荷的气候主分量1, 以全碳、全氮和水解性氮含量等养分因子为负载荷的土壤主分量2和以全钾含量为主要负载荷的土壤主分量3是与藤本攀附比率相关的主要环境因子。所有森林类型下的藤本攀附比率均呈现随树木胸径的增加而上升的趋势。部分树种在不同植被类型中有较高的藤本攀附比率, 如印度锥(Castanopsis indica)在热带雨林和热带低山常绿阔叶林中的藤本攀附比率分别为54.3%和40.6%, 西南猫尾木(Markhamia stipulata)在热带低山常绿阔叶林和热带季节性湿润林中的藤本攀附比率分别为38.2%和55.6%, 毛桐(Mallotus barbatus)和粗糠柴(Mallotus philippensis)在热带雨林和热带季节性湿润林中的藤本攀附比率分别为43.9%和75.8%。该研究揭示了西双版纳热带森林中木质藤本攀附比率在不同环境因子和树木径级间的变化规律, 为理解热带森林中藤本攀附程度与植被类型和环境间的相互关系提供了新的科学依据, 将有助于促进全球变化背景下的热带森林可持续管理与保护。

关键词: 木质藤本攀附, 热带森林, 环境梯度, 树木径级梯度

Abstract:

Aims Lianas are important components of tropical forest ecosystems, often restricting tree growth and biomass accumulation through their prevalence. Despite their ecological significance, the patterns of liana prevalence among forest trees and the factors influencing them remain poorly understood. This study examines how environmental condition and tree diameter infuence liana prevalence across three tropical forest types in Xishuangbanna, Southwestern China.

Methods Using the data from 21 1 hm2 forest plots, this study assessed liana prevalence by comparing liana prevalence across forest types, analyzing environmental drivers, and exploring the trends in liana prevalence with increasing tree diameter at breast height (DBH).

Important findings Liana prevalence varied across forest types, with the highest rates observed in tropical seasonal moist forests (27.8% ± 9.2%), moderate rates in tropical rainforests (25.2% ± 10.6%), and the lowest rates in tropical lowland evergreen broadleaf forests (12.5% ± 10.7%). Key environmental factors influencing liana prevalence included Climate Principal Component 1, positivly loaded with temperature-related variables such as the minimum air temperature of the coldest month, the mean air temperature of the coldest quarter, and the mean air temperature of the driest quarter; Soil Principal Component 2, negatively loaded with nutrient factors like total carbon concentration, total nitrogen concentration, and hydrolyzable nitrogen concentration; and Soil Principal Component 3, primarily negatively loaded with total potassium concentration. Across all forest types, liana prevalence increased with tree diameter at breast height, indicating larger trees are more susceptible. Certain tree species exhibited pronounced liana prevalence in specific forest types. For example, Castanopsis indica exhibited liana prevalence of 54.3% in tropical rainforests and 40.6% in tropical lowland evergreen broadleaf forests, while Markhamia stipulata showed liana prevalence of 38.2% in tropical lowland evergreen broadleaf forests and 55.6% in tropical seasonal moist forests. Additionally, Mallotus barbatus and Mallotus philippensis recorded prevalence rates of 43.9% and 75.8% in tropical rainforests and tropical seasonal moist forests, respectively. This study highlights the variations in liana prevalence across environmental factors and tree diameter gradients in Xishuangbanna’s tropical forests. The findings advance our understanding of the interactions between liana prevalence, vegetation types, and environmental conditions, contributing to the sustainable management and conservation of tropical forests under global change.

Key words: liana prevalence, tropical forest, environmental gradient, tree diameter gradient