Unveiling dynamic changes in the diurnal microclimate of a Buxus sempervirens with non-intrusive imaging of flow field, leaf temperature, and plant microstructure

摘要: Plant response is not only dependent on the atmospheric evaporative demand due to combined effects of wind speed, air temperature, humidity, and solar radiation, but also water transport within leaf-xylem-root system. Therefore, a detailed understanding such dynamics key development appropriate mitigation strategies numerical models. In this study, we unveil diurnal microclimate Buxus sempervirens plant using multiple high-resolution non-intrusive imaging techniques. The wake flow field measured stereoscopic particle image velocimetry, spatiotemporal leaf temperature history obtained infrared thermography, additionally, porosity X-ray tomography. We find that velocity statistics directly linked with distribution depends mainly geometry foliage which generates shear flow. interaction between regions upstream boundary layer profile seen have dominant effect turbulent kinetic energy distribution. Furthermore, area density has direct impact short-wave radiative heat flux absorption inside where 50% radiation absorbed in top 20% foliage. This localized results high local temperature. comparison variation net transpiration rate enabled us quantify hysteresis resulting from stomatal lag. day comprise four stages climatic conditions: no-cooling, high-cooling, equilibrium, decaying-cooling stages.