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生物多样性 >

2024 , Vol. 32 >Issue 12: 24372

DOI: https://doi.org/10.17520/biods.2024372

研究报告

2013-2023年浙江乌岩岭次生常绿阔叶林群落动态变化

  • 单航 ,
  • 雷祖培 ,
  • 郑方东 ,
  • 韦博良 ,
  • 仲磊 ,
  • 于明坚
展开
  • 1.浙江大学生命科学学院, 杭州 310058
    2.浙江乌岩岭国家级自然保护区管理中心, 浙江泰顺 325500
*E-mail: fishmj@zju.edu.cn

收稿日期: 2024-08-18

  录用日期: 2024-12-11

  网络出版日期: 2025-01-09

基金资助

浙江省“尖兵” “领雁”研发攻关计划(2023C03137);浙江省“尖兵” “领雁”研发攻关计划(2022C02053)

收起

Dynamic changes in the community of a secondary evergreen broad-leaved forest in Wuyanling, Zhejiang Province from 2013 to 2023

  • Hang Shan ,
  • Zupei Lei ,
  • Fangdong Zheng ,
  • Boliang Wei ,
  • Lei Zhong ,
  • Mingjian Yu
Expand
  • 1. College of Life Sciences, Zhejiang University, Hangzhou 310058, China
    2. Zhejiang Wuyanling National Nature Reserve Management Bureau, Taishun, Zhejiang 325500, China

Received date: 2024-08-18

  Accepted date: 2024-12-11

  Online published: 2025-01-09

Supported by

“Pioneer” and “Leading Goose” R&D Program of Zhejiang(2023C03137);“Pioneer” and “Leading Goose” R&D Program of Zhejiang(2022C02053)

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摘要

研究次生常绿阔叶林的动态变化对于理解常绿阔叶林群落的形成和维持具有重要意义。本研究分别于2013年、2018年和2023年对浙江省乌岩岭9 ha亚热带次生常绿阔叶林动态监测样地中胸径(DBH) ≥ 1 cm的木本植物个体进行了3次调查, 以研究次生常绿阔叶林群落动态变化规律。结果表明: (1) 10年间样地内重要值排名前10位的物种未发生变化, 但植物群落的物种多样性和多度显著下降, 个别稀有种消失。(2)小径级个体的比例逐渐减少, 中径级和大径级个体的比例逐渐增加; 不同叶生活型和地形生境中植物个体的比例基本保持稳定。(3)植物的死亡率随着径级的增加而降低, 且在不同地形生境间存在差异。(4)与2013-2018年相比, 2018-2023年植物的死亡率整体有所下降, 植物的补员率急剧下降。以上结果表明优势种对资源的竞争优势促进了乌岩岭次生常绿阔叶林群落的动态变化。本研究结果为次生常绿阔叶林的生态恢复和生物多样性保护策略提供了重要的科学依据。

关键词： 次生常绿阔叶林; 演替; 群落结构; 死亡率; 补员率

本文引用格式

单航 , 雷祖培 , 郑方东 , 韦博良 , 仲磊 , 于明坚 . 2013-2023年浙江乌岩岭次生常绿阔叶林群落动态变化[J]. 生物多样性, 2024 , 32(12) : 24372 . DOI: 10.17520/biods.2024372

Abstract

Aims: Studying the dynamic changes in secondary evergreen broad-leaved forests is crucial for understanding the formation and maintenance of these forest communities. This study aimed to investigate the dynamic changes in a subtropical secondary evergreen broad-leaved forest, providing a scientific basis for developing forest conservation and restoration strategies.

Methods: We selected a 9 ha subtropical secondary evergreen broad-leaved forest dynamics plot in the Wuyanling National Nature Reserve, Zhejiang Province, as the research site. We conducted thorough surveys of woody plants with a diameter at breast height (DBH) ≥ 1 cm in 2013, 2018, and 2023. We analyzed and compared the changes in community composition, structure, and dynamics over these years.

Results: (1) Over the past 10 years, the top 10 species by importance value within the plot have remained unchanged. However, there has been a significant decline in plant species diversity and abundance, with some rare species disappearing. (2) The proportion of small-diameter individuals decreased, while the proportions of medium-diameter and large-diameter individuals gradually increased. The proportions of plant individuals across different leaf life forms and habitats have remained relatively stable. (3) The mortality rate of plants decreased with increasing diameter and varied across different habitats. (4) Compared to the period from 2013 to 2018, the overall plant mortality rate decreased during the period from 2018 to 2023, and the recruitment rate sharply declined.

Conclusion: In the late succession stage of the 9 ha secondary evergreen broad-leaved forest dynamics plot at Wuyanling, the stability and competitive advantages of dominant species have led to a gradual decrease in diversity and the abundance of individual trees, with some rare species disappearing. The decreasing proportion of small-diameter individuals and the lower mortality rate suggest that the community is transitioning into a mature stage of succession. However, the sharp decline in the recruitment rate of plants within the plot indicates that the community’ development faces significant challenges.

Key words： secondary evergreen broad-leaved forests; succession; community structure; mortality rate; recruitment rate

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