生态学报2024，Vol.44Issue(7)：2849-2858,10.DOI:10.20103/j.stxb.202303230562
物联网技术支持下的城市热环境时空变化分析
Spatio-temporal variation analysis of urban thermal environment based on Internet of Things technology
摘要
Abstract
The urban thermal environment is a comprehensive physical environment system that integrates various external factors related to heat within a city,which affects the survival and development of its residents.Thermal environment is regarded as one of the most important ecological parameters in both natural and urban ecosystems.It is well established that obtaining adequate space-time-related thermal environment parameters is a prerequisite for conducting urban thermal environment studies.However,the stations of urban meteorological stations managed by government departments are relatively scattered,and the data obtained cannot express the microclimate conditions within the city.Scholars can obtain rich data on urban thermal environment parameters by independently setting up on-site monitoring points,but this requires significant economic costs.Currently,domestic and foreign scholars have achieved the goal of efficient monitoring of the ecological environment using Internet of Things(IoT)technology.Monitoring urban thermal environment by using Internet of Things(IoT)technology can effectively address these issues.In this study,we selected Guangzhou University as research area and developed a series of innovative thermal environment field measurement devices based on Internet of Things(IoT)technology to collect air temperature,wind speed,solar radiation,and land surface temperature simultaneously online.Specifically,ten measuring sites were selected to record the four thermal environmental parameters mentioned above between October 16 and 24,2022.The results were as follows:1)The two boundary parameters,solar radiation,and wind speed shaped the basic characteristics of the thermal environment in the study area.There was a strong correlation between the wind speeds of different sites,while very few sites had very low correlation between the wind speeds,indicating the uniqueness of the microclimate.2)The variations of wind speed and heat island intensity at different sites were significantly different both temporally and spatially.Even with the close distance between measurement points,the characteristics of the thermal environment were influenced by the surrounding buildings and vegetation.The wind speed and heat island intensity were higher at each measuring site during the daytime and vice versa at night.3)The correlation between land surface temperature and air temperature was more than 0.8,and this correlation was stronger at night than during the day.Interestingly,this relationship was also not greatly influenced by wind speed.The results of this study revealed the high heterogeneity of the urban thermal environment at a local scale and demonstrated the feasibility,convenience,and efficiency of IoT technology for urban thermal environment monitoring.关键词
城市热环境/时空变化/物联网/广州/校园Key words
urban thermal environment/spatio-temporal variation/internet of things/Guangzhou/campus引用本文复制引用
郭冠华,陈丽飞,曹峥,吴志峰,陈颖彪..物联网技术支持下的城市热环境时空变化分析[J].生态学报,2024,44(7):2849-2858,10.基金项目
国家自然科学基金项目(42071236) （42071236）
