居住区微气候与绿化响应极端气候的耦合关系

Coupling Relationship Between Microclimate and Extreme Climate in Residential Area

全球气候变化所引起的极端气候现象频发,如何有效应对和缓解极端气候所带来的复杂性和威胁,已经成为全球关注热点。本研究以江西省南昌市2018年初冰雪灾害、2019年中干旱灾害为契机,以南昌市青山湖区凤凰城凤鸣苑居住区为例,运用ENVI-met气候数值模拟技术对住宅区微气候进行模拟分析,并将受灾调查实测数据进行拟合分析。结果表明:(1)不同的居住区空间形态,形成小气候不同,微气候因素因受空间形态影响产生差异,其中,风速较空气温度、相对湿度对微气候的影响更大,同一空间类型,处于主导风向的空间微气候影响更大。(2)极端气候下,绿化在不同的微气候环境里,因空间形态,时间范围不同,产生的影响程度不同。

Extreme climate phenomena caused by global climate change occur frequently.How to effectively deal with and mitigate the complexity and threat brought by extreme climate has become a global hotspot.In this paper,taking the ice and snow disaster in the beginning of 2018 and the drought disaster in the middle of 2019 in Nanchang city as an opportunity,took fengmingyuan residential area in Fenghuang city,Qingshanhu district,Nanchang city as an example,used ENVI-met climate numerical simulation technology to simulate and analyze the microclimate of residential area,and fitted and analyzed the actual data of disaster investigation.The results showed that:(1)Different spatial forms of residential areas led to different microclimates,and the microclimate factors was different because of the influence of spatial form.Among them,the wind speed had a greater impact on the microclimate than air temperature and relative humidity.For the same space type,the spatial microclimate with dominant wind direction had a greater impact.(2)In the extreme climate,greening in different microclimate environment,due to the different spatial form and time range,had different impact.