摘要
【目的】通过对北京城市副中心研究区及普通对照绿地群落气象因子的监测,对比分析二者总体降温增湿效应差异及规律,揭示与评价前期研究的热岛改善关键技术对北京城市副中心绿地区域热岛效应的改善情况。【方法】自2018年9月至2019年8月,在研究区及普通对照绿地同步对比监测,利用Kestrel4500手持式气象仪和Fluke-63红外测温仪测定不同结构植物群落内气温、地温、相对湿度,对比分析二者及研究区内各植物群落降温增湿效应。【结果】绿地在春季、夏季和秋季呈现降温增湿效应,其中夏季最强,秋季次之,春季较弱,冬季则呈现保温干燥效应。春季、夏季和秋季不同结构类型绿地整体降温增湿效应排序为乔-灌-草>乔-草>灌-草>草坪。研究区绿地年均降低气温0.9℃,降低地温9.7℃,增加相对湿度3.6%。研究区绿地在春季、夏季和秋季降温增湿效应,冬季保温干燥效应,年均降温增湿效应三个方面均强于普通对照,尤其在夏季和秋季降低气温、夏季增加相对湿度、年均降低地温三方面显著强于普通对照(P<0.05)。【结论】进一步验证植物种类及配置模式在一定程度上可以更好缓解区域热岛效应,并在北京城市副中心的建设进程中发挥更好的服务及示范作用。
【Objective】By monitoring meteorological factors in the study area of Beijing sub-center and the common control green space community, the differences and rules of overall cooling and humidification effects of the two communities were compared and analyzed, so as to reveal and evaluate the improvement of key heat island improvement technologies in previous studies on the regional heat island effect of Beijing sub-center green space.【Methods】From September 2018 to August 2019, synchronous monitoring and comparison were conducted in the study area and control green space. The temperature, ground temperature, and relative humidity in different plant communities were measured by Kestrel4500 hand-held meteorological instrument and Fluke-63 infrared thermometer, and the cooling and humidification effects were compared and analyzed. 【Result】Green space showed cooling and humidification effect in spring, summer, and autumn. The strongest effect occurred in summer, followed by autumn and spring, and the effect of heat preservation and drying was exhibited in winter. In spring, summer, and autumn, the overall cooling and humidification effect of green space with different structure types was in the order: tree-shrub-grass > tree-grass > shrub-grass > grass. Compared to the control area, in the study area the average annual air temperature decreased by 0.9 ℃, the annual average ground temperature decreased by 9.7 ℃, and relative humidity increased by 3.6%. In the study area, the cooling and humidification effect in spring, summer, and autumn, heat preservation and drying effect in winter, and annual average cooling and humidification effect were all stronger than those in the normal control area, especially in decreasing air temperature in summer and autumn, increasing relative humidity in summer, and lowering the annual average ground temperature in summer(P<0.05). 【Conclusion】Further verifying that the recommended plant species and configuration patterns can more effectively mitigate the regional heat island effect to a certain extent, and play a better service and demonstration role in the construction process of Beijing sub-urban center.
作者
王行
王月容
段敏杰
WANG Xing;WANG Yuerong;DUAN Minjie(Beijing Institute of Landscape Architecture Beijing Key Laboratory of Ecological Function Assessment and Regulation Technology of Green Space,Beijing 100102,China)
出处
《北京农学院学报》
2022年第1期103-110,共8页
Journal of Beijing University of Agriculture
基金
北京市科技计划项目(Z161100001116065)。
关键词
城市绿化
热岛效应
降温
增湿
urban greening
heat island effect
temperature reduction
humidification
