Vertical thermal environment of subtropical broad-leaved urban forests and the influence of canopy structure

Dong, Ya; Cai, Yue; Li, Chong; Wang, Haihua; Zhou, Lv; Sun, Jingyi; Li, Chen; Song, Bingzheng; Zhou, Guomo

doi:10.1016/j.buildenv.2022.109521

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…On the one hand, the canopy density of the NA forest is higher than that of the DL forest, causing the forest canopy to block a large amount of solar radiation, so the temperature inside the forest is lower. On the other hand, the more spacious understory allows for easier air movement and heat exchange between the inside and outside of the forest [48]. This reminds us that, in addition to the canopy density, the understory structure of the forest may also be an important factor affecting the thermal comfort within the forest, which provides a direction for creating a more comfortable forest thermal environment or renewing overly depressed forests.…”

Section: Thermal Environment Of Two Bamboo Forests and Their Effect O...mentioning

confidence: 96%

Seasonal Variation in the Thermal Environment and Health-Related Factors in Two Clustered Recreational Bamboo Forests

Tang,

Yang,

Jiang

et al. 2023

Forests

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Forest thermal environments and health-related factors have a significant impact on user experience and physical benefits. Therefore, it is important to study changes in the thermal environment and health-related factors in recreational forests. Clustered bamboo forests have unique structures featuring high canopy density and extensive understory spaces suitable for recreational activities. However, there is no relevant report on the recreational use of these forests. This study investigated seasonal characteristics in the thermal comfort and health-related factors in two clustered bamboo forests in Southwest China. Microenvironmental parameters and health-related factors (negative air oxygen ions (NAI), airborne particulate matter, airborne microorganisms, and biogenic volatile organic compounds (BVOCs)) were measured in four seasons. The microenvironmental parameters were converted into a physiological equivalent temperature (PET) for each period. The results showed that (1) most of the time, the thermal comfort, air particle, NAI, and bacteria concentrations in the two bamboo forests were superior to the controls and met the standard for recreational activities; (2) thermal comfort environments and health-related factors levels varied between two bamboo forests; and (3) the most abundant compounds in the two bamboo forests in each season were leaf alcohol and 2-hexenal. The two clustered bamboo forests provided a comfortable thermal environment and had clean air and bactericidal abilities in all seasons. The forests emitted BVOCs with fresh grass and leaf fragrances, helping to alleviate the sense of depression among visitors. The results confirm that clustered bamboo forests can provide suitable recreational conditions. The results can be used to guide the management of recreational forests and provide support for the development of bamboo forests.

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Section: Thermal Environment Of Two Bamboo Forests and Their Effect O...mentioning

confidence: 96%

Seasonal Variation in the Thermal Environment and Health-Related Factors in Two Clustered Recreational Bamboo Forests

Tang,

Yang,

Jiang

et al. 2023

Forests

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“…UAVs present the opportunity for fine-resolution spatial data over larger areas and are currently implemented in other fields, such as precision agriculture and geology [19][20][21][22]. In contrast, a limited number of studies have leveraged the potential of UAVs in urban environments for any application, including addressing the gap in the urban surface temperature literature [23][24][25][26][27][28]. These range internationally from Chile to China, but none to our knowledge have been conducted in the United States.…”

Section: Introductionmentioning

confidence: 99%

Surface Heat Monitoring with High-Resolution UAV Thermal Imaging: Assessing Accuracy and Applications in Urban Environments

Henn,

Peduzzi

2024

Remote Sensing

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The urban heat island (UHI) effect, where urban areas experience higher temperatures than surrounding rural regions, necessitates effective monitoring to estimate and address its diverse impacts. Many existing studies on urban heat dynamics rely on satellite data with coarse resolutions, posing challenges in analyzing heterogeneous urban surfaces. Unmanned aerial vehicles (UAVs) offer a solution by providing thermal imagery at a resolution finer than 1 m. Despite UAV thermal imaging being extensively explored in agriculture, its application in urban environments, specifically for surface temperatures, remains underexplored. A pilot project conducted in Athens, Georgia, utilized a UAV with a FLIR Vue Pro R 640 thermal camera to collect thermal data from two neighborhoods. Ground data, obtained using a handheld FLIR E6-XT infrared imaging camera, were compared with UAV thermal imagery. The study aimed to assess the accuracy of the UAV camera and the handheld camera for urban monitoring. Initial testing revealed the handheld’s accuracy but tendency to underpredict, while UAV camera testing highlighted considerations for altitude in both the rjpg and tiff image pixel conversion models. Despite challenges, the study demonstrates the potential of UAV-derived thermal data for monitoring urban surface temperatures, emphasizing the need for careful model considerations in data interpretation.

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First report of Colletotrichum siamense causing leaf blight on Yulania liliiflora in China

Wei,

Wang,

et al. 2024

J Plant Pathol

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Vertical thermal environment of subtropical broad-leaved urban forests and the influence of canopy structure

Cited by 6 publications

References 55 publications

Seasonal Variation in the Thermal Environment and Health-Related Factors in Two Clustered Recreational Bamboo Forests

Seasonal Variation in the Thermal Environment and Health-Related Factors in Two Clustered Recreational Bamboo Forests

Surface Heat Monitoring with High-Resolution UAV Thermal Imaging: Assessing Accuracy and Applications in Urban Environments

First report of Colletotrichum siamense causing leaf blight on Yulania liliiflora in China

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