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园林中6种常见竹类植物的温湿度调节效应
Capacities of six common bamboo species to regulate temperature and humidity of micro-environment in the garden
【目的】比较了6种常见竹类植物对环境温湿度的调节效应,为园林设计中竹类康养功能优化提供参考依据。【方法】选定4个不同环境场景的城市公园,采用热成像仪测定了6种竹类植物的辐照降温作用,并利用光合测定仪检测了竹类植物的蒸腾速率。【结果】在综合性、专类性及社区性人居环境中,竹类植物降低环境温度的幅度多为2~3 ℃,局部幅度可高达7~15 ℃,此类区域多种植孝顺竹(Bambusa multiplex)、毛竹(Phyllostachys edulis)及阔叶箬竹(Indocalamus latifolius)。不同季节和一天中不同时段的竹类植物蒸腾速率均呈现差异,8月蒸腾速率整体上大于3月,夏季日变化呈现10:00和14:00出现蒸腾高峰的规律。不同竹类植物的平均蒸腾速率为37~52 g/(m2·h),相应增湿能力为孝顺竹 > 毛竹 > 凤尾竹(Bambusa multiplex f. fernleaf) > 菲白竹(Pleioblastus fortunei) > 紫竹(Phyllostachys nigra) > 阔叶箬竹。【结论】孝顺竹与毛竹对环境微气候的调节能力最强,能综合调节环境温湿度,而阔叶箬竹的降温性能较好。城市公园的设计及建设中,可通过竹种选择、竹类植物叶面积规模控制及环境补水等措施进一步优化植物对环境温湿度的调节能力。
【Objective】Urban green spaces play a crucial role in creating a favorable living environment. This study compared the temperature and humidity regulation ability of six common bamboo species in urban parks to offer insights for optimizing their health benefits in garden design.【Method】Four urban parks with diverse environmental settings were chosen for the study. The radiation cooling effects of six common bamboo species were assessed using a thermal imager, while the transpiration rates were measured with a photosynthesis meter.【Result】The results indicated that these bamboos could reduce ambient temperatures by 2-3 ℃ in urban parks with various environmental settings, with localized reductions reaching as high as 7-15 ℃. These areas were mainly planted with Bambusa multiplex, Phyllostachys edulis, and Indocalamus latifolius. Variations in transpiration rates were observed across different seasons and times of the day, with higher rates in August compared to March and peak transpiration occurring at 10:00 and 14:00 during summer. The average transpiration rates ranged from 37 to 52 g/(m2·h) for six bamboos species and the rank of corresponding humidification efficiency was Bambusa multiplex > Phyllostachys edulis > B. multiplex f. fernleaf > Pleioblastus fortunei > Phyllostachys nigra > Indocalamus latifolius.【Conclusion】B. multiplex and Phyllostachys edulis demonstrated superior microclimate regulation abilities, effectively managing both temperature and humidity levels. However, Indocalamus latifolius primarily excelled in reducing ambient temperatures. The study suggests that the temperature and humidity regulation capabilities of bamboo can be enhanced through careful selection of bamboo species, control of leaf are scale, and appropriate environmental water management.
竹林康养 / 观赏竹 / 辐照降温 / 湿度调节 / 城市公园
bamboo forests therapy / ornamental bamboo / irradiation cooling / humidity regulation / urban park
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