Airborne particulate matter can represent a serious issue for human health, especially in densely populated urban areas. Moreover, the inhalation of particulate can be more harmful with decreasing particles diameter. Vegetation can provide many ecosystem services to the citizens, including the removal of many different pollutants in the air, but while the effect on many gaseous compounds has already been widely proved, the capability of particulate matter (PM) sequestration driven by vegetation and its resulting benefit on air quality has not been deeply investigated yet at larger spatial scale, especially in Mediterranean environment. This study was conducted in the Real Bosco di Capodimonte, a green area of about 125 ha located inside the urban area of Naples (Italy) containing different species typical of the Mediterranean forest ecosystem. To better understand the interaction between PM and the park area, we measured fluxes of PM₁₀, PM_2.5 and PM₁ with a fast acquisition analyser, according to the Eddy Covariance technique. We found that the particle deposition was higher during the central hours of the day and it was more evident for smaller size particles. Furthermore, the daily PM fluxes found accorded with evapotranspiration and carbon sequestration operated by plants, suggesting a possible active role of vegetation on the particulate deposition.

空气中的颗粒物可能对人类健康构成严重的问题，尤其是在人口稠密的城市地区。而且，随着颗粒直径的减小，吸入颗粒物可能更加有害。植被可以为公民提供许多生态系统服务，包括去除空气中的许多不同污染物，但是尽管已经广泛证明了对多种气态化合物的影响，但植被驱动的颗粒物（PM）隔离的能力及其结果在更大的空间范围内，尤其是在地中海环境中，尚未对空气质量的益处进行深入研究。这项研究是在Real Bosco di Capodimonte上进行的，该区域位于那不勒斯市区（意大利）内约125公顷的绿色区域，其中包含地中海森林生态系统的典型物种。₁₀，PM _2.5和PM ₁具有快速采集分析仪，根据涡流协方差技术。我们发现，一天中的主要时段中，颗粒沉积较高，而较小尺寸的颗粒则更为明显。此外，发现的每日PM通量与植物的蒸散和碳固存相符，表明植被可能对颗粒物的沉积起积极作用。