宝鸡金渭湖湿地小气候效应初探

Preliminary Study on Microclimate Effect of Baoji Jinwei Lake Wetland

以宝鸡市金渭湖湿地为研究对象,在金渭湖拦河闸桥附近进行气象及大气颗粒物观测,将拦河闸桥看作湿区,公路旁看作干区,对比分析湿地小气候特征的结果表明:宝鸡市金渭湖湿地具有明显的降温增湿作用,距离湿区越远,温度越高,相对湿度越低;冬季的相对湿度大于夏季,冬夏季的湿区温度始终低于干区,干湿两区的温度和相对湿度的日变化规律基本一致;湿区的PM2.5质量浓度小于干区,最多可小47%,表明金渭湖湿地对局地大气环境中的细颗粒物质量浓度具有显著削减作用。

The Jinwei Lake wetland in Baoji City was selected as the research object,and meteorological observation and atmospheric particulate matter observation were conducted near the Jinwei Lake sluice bridge.The sluice bridge was regarded as a wet area,and the roadside was regarded as a dry area.Wetland microclimate characteristics were compared and analyzed.The results show that the Jinwei Lake wetland in Baoji City has a significant cooling and humidifying effect.The farther away from the wet area,the higher the temperature,and the lower the relative humidity;the relative humidity in winter is greater than that in summer,and the temperature in wet areas in winter and summer is always lower than in dry and wet areas.It is basically consistent with the daily variation of temperature and relative humidity in the dry area.Wetlands contribute to the stability of the large temperature and humidity in the area.The PM2.5 mass concentration in the wet area is less than that in the dry area and can be up to 47%lower,indicating that the Jinwei Lake wetland is relatively local.The mass concentration of fine particles in the atmospheric environment has a significant reduction effect.