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Aims <p>Volatile organic compounds (VOCs) play a crucial role in soil health, influencing nutrient cycling, plant–microbe interactions, and atmospheric chemistry. Soil water availability is a key factor regulating VOC emissions, yet its relationship with soil physicochemical properties remains insufficiently explored. This study investigates the impact of soil water-holding capacity (WHC) on VOC emissions in a Cypriot vineyard, considering the role of soil physicochemical characteristics.</p> Methods <p>A green analytical method—headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC–MS)—was developed to monitor soil VOCs. Soil samples with WHC ranging from 10 to 70% were analyzed to assess VOC emissions and their correlation with soil physicochemical properties. Statistical analyses were performed to determine the influence of WHC on VOC profiles.</p> Results <p>Increasing soil WHC led to higher emissions of most VOCs, including hydrocarbons, aldehydes, ketones, and alcohols. However, terpene emissions were associated with low WHC (10–30%), indicating distinct moisture-dependent VOC dynamics. The observed variations suggest that microbial activity, soil chemical composition, and environmental conditions collectively influence soil VOC emissions.</p> Conclusion <p>Soil water availability strongly modulates VOC emissions, with distinct patterns for different compound classes. Understanding these dynamics is essential for assessing soil health and VOC-mediated plant–microbe interactions in vineyard ecosystems. These findings provide a basis for further research into the mechanisms driving VOC variability under changing soil moisture conditions.</p>

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Linking soil physicochemical properties, water-holding capacity, and VOC emissions in vineyards

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Kyriaki Kaikiti,
  • Agapios Agapiou,
  • Michalis Omirou

摘要

Aims

Volatile organic compounds (VOCs) play a crucial role in soil health, influencing nutrient cycling, plant–microbe interactions, and atmospheric chemistry. Soil water availability is a key factor regulating VOC emissions, yet its relationship with soil physicochemical properties remains insufficiently explored. This study investigates the impact of soil water-holding capacity (WHC) on VOC emissions in a Cypriot vineyard, considering the role of soil physicochemical characteristics.

Methods

A green analytical method—headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC–MS)—was developed to monitor soil VOCs. Soil samples with WHC ranging from 10 to 70% were analyzed to assess VOC emissions and their correlation with soil physicochemical properties. Statistical analyses were performed to determine the influence of WHC on VOC profiles.

Results

Increasing soil WHC led to higher emissions of most VOCs, including hydrocarbons, aldehydes, ketones, and alcohols. However, terpene emissions were associated with low WHC (10–30%), indicating distinct moisture-dependent VOC dynamics. The observed variations suggest that microbial activity, soil chemical composition, and environmental conditions collectively influence soil VOC emissions.

Conclusion

Soil water availability strongly modulates VOC emissions, with distinct patterns for different compound classes. Understanding these dynamics is essential for assessing soil health and VOC-mediated plant–microbe interactions in vineyard ecosystems. These findings provide a basis for further research into the mechanisms driving VOC variability under changing soil moisture conditions.