Natural volatile organic compounds (NVOCs) and airborne microorganisms in different stands of urban forests.

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-16 DOI:10.1016/j.scitotenv.2024.176964

Xin Wan, Can Yang, Sumei Qiu, Weitao Xu, Jingwei Lian, Jiaojiao Zhang, Wei Xing, Yingdan Yuan

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引用次数: 0

Abstract

Natural volatile organic compounds (NVOCs) and airborne microorganisms are important elements in urban forest air that affect air quality and human health. In this study, the Zhuyu Bay urban forest in Yangzhou was selected as the research object, and gas chromatography-mass spectrometry (GC-MS) was used to detect the composition of NVOCs in different forest stands. Terpenes, heterocyclic compounds, and esters accounted for the highest proportions. We then explored the effects of NVOCs on the physiological health of each forest stand and used Kyoto Encyclopedia of Genes and Genome enrichment analysis to identify beneficial secondary metabolites. Among the identified compounds, alpha-phellandrene 1, azulene, and other terpenoids were found to possess antibacterial, anti-inflammatory, and antioxidant properties. Heterocyclic compounds, such as 4-Pyridinecarboxylic acid and visnagin, showed significant effects in the treatment of diseases. In addition, we collected and analyzed culturable airborne microorganisms in different forest stands and found that the bamboo forest had the lowest number of culturable airborne microorganisms. To further explore the influence of urban microclimates on air microorganisms and NVOCs, a partial least squares path modelling (PLS-PM) analysis was conducted. Air negative oxygen ion is an important factor affecting NVOCs, and Air moisture has a significant positive effect on bacteria proportion.

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城市森林不同林分中的天然挥发性有机化合物 (NVOC) 和空气中的微生物。

天然挥发性有机化合物（NVOCs）和空气中的微生物是城市森林空气中影响空气质量和人体健康的重要元素。本研究以扬州竹屿湾城市森林为研究对象，采用气相色谱-质谱联用技术（GC-MS）检测不同林分中天然挥发性有机物的组成。结果表明，萜烯类、杂环类和酯类化合物所占比例最高。然后，我们探讨了非挥发性有机化合物对各林分生理健康的影响，并利用京都基因百科全书和基因组富集分析鉴定了有益的次生代谢物。在鉴定出的化合物中，发现α-黄柏烯 1、天竺葵烯和其他萜类化合物具有抗菌、消炎和抗氧化特性。杂环化合物，如 4-吡啶甲酸和粘菌素，在治疗疾病方面有显著效果。此外，我们收集并分析了不同林分中可培养的空气传播微生物，发现竹林中可培养的空气传播微生物数量最少。为了进一步探讨城市微气候对空气微生物和负氧离子的影响，我们进行了偏最小二乘法路径模型（PLS-PM）分析。空气负氧离子是影响 NVOCs 的重要因素，而空气湿度对细菌比例有显著的正向影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.