城市森林能否为鸟类提供声学庇护所?研究植被结构和人为噪音对鸟类声音多样性的影响

IF 3.4 2区 农林科学 Q1 FORESTRY
Zezhou Hao, Chengyun Zhang, Le Li, Bing Sun, Shuixing Luo, Juyang Liao, Qingfei Wang, Ruichen Wu, Xinhui Xu, Christopher A. Lepczyk, Nancai Pei
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引用次数: 0

摘要

作为陆地生态系统的重要组成部分,城市森林通过为声学空间提供合适的栖息地,在保护城市生物多样性方面发挥着举足轻重的作用。以往的研究指出,植被结构是影响城市森林中鸟类声音的一个关键因素;因此,调整频率组成可能是鸟类避免人为噪声掩盖其歌声的一种策略。然而,尽管受到人为噪声的影响,鸟类发声对植被结构的反应机制是否保持一致,目前还不得而知。假设城市森林中的人为噪声占据了鸟类鸣唱的低频空间,可能导致森林声学壁龛的重塑,而城市森林的植被结构是塑造鸟类发声声学空间的关键因素。在不同的城市森林中使用被动声学监测仪监测自然和人为噪声,并将声音分为三种声学场景(鸟声、人声和鸟-人声),以确定鸟声、人为噪声和植被结构之间的相互联系。人为噪声通过侵入鸟类使用的低频空间改变了城市森林的声学生态位,而与体积(树干体积和树枝体积)和密度(树枝数量和叶面积指数)相关的植被结构则对鸟类声音的多样性产生了显著影响。我们的研究结果表明,低频和高频信号对植被结构的响应是不同的。通过阐明这种关系,我们的研究结果有助于理解植被结构如何影响受人为噪声影响的城市森林中的鸟类声音。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Can urban forests provide acoustic refuges for birds? Investigating the influence of vegetation structure and anthropogenic noise on bird sound diversity

Can urban forests provide acoustic refuges for birds? Investigating the influence of vegetation structure and anthropogenic noise on bird sound diversity

As a crucial component of terrestrial ecosystems, urban forests play a pivotal role in protecting urban biodiversity by providing suitable habitats for acoustic spaces. Previous studies note that vegetation structure is a key factor influencing bird sounds in urban forests; hence, adjusting the frequency composition may be a strategy for birds to avoid anthropogenic noise to mask their songs. However, it is unknown whether the response mechanisms of bird vocalizations to vegetation structure remain consistent despite being impacted by anthropogenic noise. It was hypothesized that anthropogenic noise in urban forests occupies the low-frequency space of bird songs, leading to a possible reshaping of the acoustic niches of forests, and the vegetation structure of urban forests is the critical factor that shapes the acoustic space for bird vocalization. Passive acoustic monitoring in various urban forests was used to monitor natural and anthropogenic noises, and sounds were classified into three acoustic scenes (bird sounds, human sounds, and bird-human sounds) to determine interconnections between bird sounds, anthropogenic noise, and vegetation structure. Anthropogenic noise altered the acoustic niche of urban forests by intruding into the low-frequency space used by birds, and vegetation structures related to volume (trunk volume and branch volume) and density (number of branches and leaf area index) significantly impact the diversity of bird sounds. Our findings indicate that the response to low and high frequency signals to vegetation structure is distinct. By clarifying this relationship, our results contribute to understanding of how vegetation structure influences bird sounds in urban forests impacted by anthropogenic noise.

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来源期刊
CiteScore
7.30
自引率
3.30%
发文量
2538
期刊介绍: The Journal of Forestry Research (JFR), founded in 1990, is a peer-reviewed quarterly journal in English. JFR has rapidly emerged as an international journal published by Northeast Forestry University and Ecological Society of China in collaboration with Springer Verlag. The journal publishes scientific articles related to forestry for a broad range of international scientists, forest managers and practitioners.The scope of the journal covers the following five thematic categories and 20 subjects: Basic Science of Forestry, Forest biometrics, Forest soils, Forest hydrology, Tree physiology, Forest biomass, carbon, and bioenergy, Forest biotechnology and molecular biology, Forest Ecology, Forest ecology, Forest ecological services, Restoration ecology, Forest adaptation to climate change, Wildlife ecology and management, Silviculture and Forest Management, Forest genetics and tree breeding, Silviculture, Forest RS, GIS, and modeling, Forest management, Forest Protection, Forest entomology and pathology, Forest fire, Forest resources conservation, Forest health monitoring and assessment, Wood Science and Technology, Wood Science and Technology.
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