生物多样性 ›› 2023, Vol. 31 ›› Issue (7): 22665.  DOI: 10.17520/biods.2022665

• 研究报告: 动物多样性 • 上一篇    下一篇

火后恢复时间影响大兴安岭寒温带森林内部与边缘鸟类多样性

李发扬1,2, 李滢钰1,2, 蒋文妮3, 刘曙光4, 霍超4, 孙巧奇1,2,*(), 邹红菲1,2   

  1. 1.东北林业大学野生动物与自然保护地学院, 哈尔滨 150040
    2.自然资源部寒地国土空间规划与生态保护修复重点实验室, 哈尔滨 150040
    3.北京师范大学生命科学学院, 北京 100875
    4.黑龙江南瓮河国家级自然保护区管理局, 黑龙江松岭 165012
  • 收稿日期:2022-11-30 接受日期:2023-03-29 出版日期:2023-07-20 发布日期:2023-07-26
  • 通讯作者: *E-mail: qiaoqi.sun@nefu.edu.cn
  • 作者简介:*E-mail: qiaoqi.sun@nefu.edu.cn
  • 基金资助:
    黑龙江省自然科学基金(YQ2021C002);黑龙江省博士后科研启动金(LBH-Q20063);教育部中央高校基本科研业务费项目(2572021DT05)

How forest fires affect bird diversity over time in boreal forest interiors and edges in the Greater Khingan Mountains

Fayang Li1,2, Yingyu Li1,2, Wenni Jiang3, Shuguang Liu4, Chao Huo4, Qiaoqi Sun1,2,*(), Hongfei Zou1,2   

  1. 1. College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040
    2. Key Laboratory of National Territory Spatial Planning and Ecological Restoration in Cold Regions, Ministry of Natural Resources, Harbin 150040
    3. College of Life Sciences, Beijing Normal University, Beijing 100875
    4. Heilongjiang Nanwenghe National Nature Reserve Administration, Songling, Heilongjiang 165012
  • Received:2022-11-30 Accepted:2023-03-29 Online:2023-07-20 Published:2023-07-26
  • Contact: *E-mail: qiaoqi.sun@nefu.edu.cn

摘要:

中重度火干扰通常会显著改变森林结构与功能, 甚至引发森林演替, 严重影响鸟类群落组成与多样性。大兴安岭是我国林火高发热点地区之一, 但林火对鸟类多样性影响的研究较少, 特别是对功能多样性的影响尚不清楚。本研究于2021年7-8月在大兴安岭地区的黑龙江南瓮河国家级自然保护区, 采用样点法对森林鸟类展开调查, 量化不同林火干扰时间下森林内部和边缘鸟类功能多样性的差异。同时, 通过系统性文献检索, 进一步比较了大兴安岭地区不同林分组成与鸟类功能多样性的关系。结果发现: (1)不同林火事件后, 森林内部鸟类群落的组成差异较小, 但边缘鸟类组成差异较大; (2)森林内部的鸟类功能丰富度和均匀度随火后恢复时间增加逐渐升高, 并且在火后早期阶段森林边缘的功能丰富度更高; (3)随着火后恢复时间的增加, 森林边缘的留鸟比例增加, 夏候鸟比例减少; (4)在大兴安岭地区, 针阔混交林中的鸟类功能丰富度显著高于兴安落叶松(Larix gmelinii)林。本研究建议在大兴安岭寒温带森林中, 保持森林内部结构稳定性, 同时提升火后早期阶段森林边缘的植被多样性, 这有利于维持鸟类较高的功能丰富度和功能均匀度。

关键词: 鸟类群落, 大兴安岭, 火干扰, 森林演替, 功能多样性

Abstract

Aim: Moderate/high-severity fire is highly likely to induce changes in forest structure, function, and forest succession, which further threaten bird composition and diversity. Greater Khingan Mountains is a fire-prone region, however, little is known about how forest fires influence bird diversity, particularly its functional diversity.

Methods We used the point counts approach to survey birds and quantified changes in bird community structure and functional diversity after several fires had occurred at both forest interiors and edges in the Heilongjiang Nanwenghe National Nature Reserve from July to August 2021. Furthermore, a systematic literature review was conducted to investigate the relationship between forest composition and bird functional diversity in the Greater Khingan Mountains.

Results: The results showed (1) the difference in bird community composition was small in the forest interiors, but was great at forest edges, with different fire severity histories; (2) the functional richness and evenness of birds in the forest interiors gradually increased with the increased recovery time since the fire, and bird functional richness was greatest at the forest edges in the early stages of the post-fire disturbance; (3) over time since the post-fire recovery, the proportion of resident birds increased, but the proportion of summer migratory birds decreased at the forest edges; (4) bird functional richness was significantly higher in the mixed coniferous forests compared to the larch dominant forests in the Greater Khingan Mountains region.

Conclusions: This study suggests that maintaining the structural stability in forest interiors and enhancing plant diversity at the forest edges in the early stages of the post-fire are beneficial for maintaining high bird functional richness and evenness in the boreal forests.

Key words: bird community, Greater Khingan Mountains, fire disturbance, forest succession, functional diversity