基于环境小气候效应分析的合理水面率研究

Reasonable Water Surface Rate Study Based on Environmental Microclimate Effects Analysis

针对城市水域的环境小气候功能,在对城市气候特别是热岛效应研究的基础上,从水域承载的环境小气候功能出发,采用孤立变量法建立了水面率与城市气温响应关系的定量计算模式,对水域的热汇与热源效应进行了量化分析。结果表明:城市内水域的存在,可以在一定程度上减缓城市热岛效应;水体热容量大,蒸发水分多,增温和降温缓和;夏季水域起降温作用,冬季水域起升温作用。通过以上研究,为城市水域规划、建设、保护提供了一定的理论参考依据。

According to the environmental microclimate function of water area, based on the study on heat island effect of urban climate, quantitative calculation model of response relationship between water surface rate and urban climate is established through isolated variable method. Meanwhile, the heat source and heat sink effect of water area is quantitatively analyzed. The results show that the existence of urban water area can decrease the heat island effect in a certain extent, the increase and decrease of temperature is mitigatory due to the large thermal capacity of water area and a great deal of water evaporation, water area can decrease temperaturein summer and increase temperature in winter. The above study result will supply certain theoretical references for the planning, construction and protection of urban water area.