北京地区侧柏和垂柳释放有益挥发性有机物组分日动态变化特征

Characteristics of diurnal dynamic changes of beneficial BVOCs components released by Platycladus orientalis and Salix babylonica in Beijing area

以侧柏(Platycladus orientalis)和垂柳(Salix babylonica)为研究对象,采用动态顶空套袋采集法和自动热脱附-气相色谱/质谱联用技术来分析这些植物释放的挥发性有机物(VOCs)的组成和释放模式。选择不同的时间和天气条件下的样本进行采集,并记录相关信息。通过对原始数据的分析,确定有益挥发性有机物(BVOCs)的成分和相对百分含量。研究结果显示,侧柏和垂柳在不同季节释放的BVOCs成分主要包括醇类、醛类、烯烃类等其他类化合物,这些有益BVOCs在植物的生理和生态功能中扮演着重要的角色,对于深入了解植物与环境之间的相互作用具有重要意义。侧柏和垂柳释放BVOCs成分在不同季节会有所变化。其次,研究分析了侧柏和垂柳在不同季节中有益BVOCs成分的含量和变动趋势。侧柏在不同季节的释放模式呈现出明显的差异。春季的释放模式呈现出“单峰单谷”曲线,夏季的释放模式呈现出“单峰”曲线,而秋季的释放模式呈现出“双峰单谷”曲线。这表明侧柏在不同季节中的挥发物释放存在明显的季节性变化。相比之下,垂柳的释放模式在不同季节中相对稳定,呈现出一致的“单峰型”曲线。这说明垂柳的挥发物释放模式在不同季节中相对持续且稳定,不像侧柏那样受季节变化的影响较大。此外,研究还发现侧柏和垂柳释放有益BVOCs的相对含量在正午前后达到高峰期,而低谷期则出现在高峰期前后。这表明植物的挥发物释放受到日光照射和其他环境因素的影响,存在明显的日变化规律。综上所述,该研究采用了先进的分析技术,对北京市顺义区高丽营试验基地的侧柏和垂柳进行了挥发物采集和分析。结果显示侧柏和垂柳在不同季节中释放的有益BVOCs成分存在明显差异,并具有季节性变化。此外,它们的挥发物释放还受到日变化的影响。

This study was conducted for Platycladus orientalis and weeping willow in Gaoliying Experimental Base,Shunyi District,Beijing.The composition and release patterns of volatile organic compounds(VOCs)released by these plants were analyzed using dynamic headspace bag collection method and automatic thermal desorption gas chromatography/mass spectrometry technology.In order to obtain more comprehensive information,samples were collected at different times and weather conditions,and relevant information was recorded.Through the analysis of the original data,the composition and relative percentage of beneficial volatile organic compounds(BVOCs)were determined.The research results show that the BVOCs released by Platycladus orientalis and weeping willow in different seasons mainly include alcohols,aldehydes,olefins,and other compounds.These beneficial BVOCs play important roles in the physiological and ecological functions of plants,and are of great significance for a deeper understanding of the interactions between plants and the environment.Research has found that the composition of BVOCs released by Platycladus orientalis and weeping willow varies in different seasons.Secondly,the study analyzed the content and variation trend of beneficial BVOCs components in Platycladus orientalis and weeping willow in different seasons.The release patterns of Platycladus orientalis show significant differences in different seasons.The release pattern in spring presents a“single peak and single valley”curve,while the release pattern in summer presents a“single peak”curve,while the release pattern in autumn presents a“double peak and single valley”curve.This indicates that there are significant seasonal changes in the release of volatile matter from Platycladus orientalis in different seasons.In contrast,the release pattern of weeping willows is relatively stable in different seasons,presenting a consistent“unimodal”curve.This indicates that the volatile matter release pattern of weeping willows is relatively continuous and stable in different seasons,unlike Platycladus orientalis,which is greatly affected by seasonal changes.In addition,the study also found that the relative content of beneficial BVOCs released by Platycladus orientalis and weeping willow reached its peak around noon,while the trough period appeared before and after the peak period.This indicates that the release of volatile matter from plants is influenced by sunlight and other environmental factors,and there is a clear diurnal variation pattern.To sum up,the study used advanced analytical techniques to collect and analyze the volatiles of Platycladus orientalis and weeping willow in Gaoliying Experimental Base,Shunyi District,Beijing.The results showed that there were significant differences in the beneficial BVOCs released by Platycladus orientalis and weeping willow in different seasons,with seasonal variations.In addition,their volatile matter release is also affected by daily changes.