Daytime irrigation leads to significantly cooler private backyards in summer
Daytime irrigation leads to significantly cooler private backyards in summer
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DOI：
10.1016/j.uclim.2022.101310
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发表时间：
2022-12
期刊：
影响因子：
6.4
通讯作者：
Pui Kwan Cheung;C.Y. Jim;N. Tapper;K. Nice;S. Livesley
中科院分区：
文献类型：
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作者：
Pui Kwan Cheung;C.Y. Jim;N. Tapper;K. Nice;S. Livesley
后院对于各个家庭发挥着重要作用，因为它们为社会和环境互动、放松、园艺和儿童活动提供了私人且安全的绿色空间。后院的使用很大程度上取决于其热条件。草坪是后院常见的表面类型，但未灌溉的草坪可能像人行道一样温暖，带来热不适并阻止人们使用它们。在某些条件下，草坪灌溉提供了通过增加蒸散量来减少热应力的机会。本研究旨在测量澳大利亚墨尔本温暖季节草坪灌溉对后院环境微气候的影响。该实验由四个 6 m × 6 m 草皮覆盖的地块组成。每日灌溉采用四种量：0、2、4 和 7 毫米，持续六周。在第 6 周，4 毫米灌溉使白天土壤温度、草坪表面温度、气温和通用热气候指数分别降低了 1.7、2.3、0.6 和 0.4°C。所有白天的影响都很显着（p < 0.05，t 检验）。灌溉结合树荫的使用有可能显着改善后院的热条件。
Backyards play important roles for individual households because they provide a private and safe green space for social and environmental interactions, relaxation, gardening and children's activities. The use of backyards is highly dependent on their thermal conditions. Turf is a common surface type in backyards but unirrigated turf can be as warm as pavement, bringing thermal discomfort and discouraging people from using them. Under certain conditions, turf irrigation provides an opportunity to reduce thermal stress by increasing evapotranspiration. This study aims to measure the impacts of turf irrigation on microclimate in a backyard environment in the warm season in Melbourne, Australia. The experiment consisted of four 6 m × 6 m turf-covered plots. Daily irrigation was applied at four amounts: 0, 2, 4 and 7 mm for six weeks. In Week 6, the 4-mm irrigation reduced daytime soil temperature, turf surface temperature, air temperature and universal thermal climate index by 1.7, 2.3, 0.6 and 0.4 °C, respectively. All daytime impacts were significant (p< 0.05,t-test). Irrigation has the potential to significantly improve the thermal conditions of backyards in combination with the use of tree shade.