作　　者： ; ; ; ;

机构地区： 中国林业科学研究院林业研究所国家林业局林木培育重点实验室

出　　处： 《城市环境与城市生态》 2013年第5期16-18,23,共4页

摘　　要： 以福州旗山森林公园内毛竹林为例,对其秋季空气颗粒物浓度日变化进行了观测,结果表明:1)4种粒径颗粒物浓度日变化曲线均呈三峰两谷形,07:00、15:00和19:00出现全天的3个高峰;09:00和17:00出现全天的2个低谷。TSP日均浓度为241.4μg/m3,达到二级地区标准;PM10日均浓度为167.7μg/m3,达到三级地区标准;PM2.5日均浓度为59.6μg/m3,达到二级地区标准。2)从不同粒径空气颗粒物浓度的日变化比较来看,上午周围环境对小粒径颗粒物浓度影响不大,只有在下午大粒径浓度明显增加的同时小粒径浓度才有显著提高。3)气象因素和天气条件对颗粒物浓度(特别是粗颗粒物浓度)的影响较大;颗粒物浓度与相对湿度呈正相关,与温度、风速均呈负相关。 The diurnal variations of air particulate matter concentrations in autumn were observed in the moso bamboo （Phyllostachys pubescen） forest of Fuzhou Qishan Forest Park. The concentrations of four different diameter particles showed three daily peaks at 07：00,15：00 and 19：00 and two troughs at 09：00 and 17：00 in autumn. The daily average concentration of TSP was 241.4 μg/m^3, and the air quality reached the second class of the regional standard. The daily average concentration of PM10 was 167.7 μg/m^3, and the air quality reached the third class of the regional standard. The daily average concentration of PM~ was 59.61xg/m3, and the air qliality reached the second class of the regional standard. Comparing the daily concentration change of different kinds of particles, the surrounding environment in the morning had little effect on the concentration of small particles, whereas the small particle concentration was significantly increased together with the increase of big particles in the afternoon. The influence of meteorological factors and weather conditions on the particle concentration was strong, especially on coarse particles. Particle concentration was positively correlated with relative humidity, hut negatively correlated with temperature and wind speed.

关 键 词： 毛竹林 空气悬浮颗粒物 秋季 日变化

领　　域： [农业科学] [农业科学]