云勇生态林空气负离子浓度及变化规律

文章于2009年9月对广东省佛山市云勇生态林养护中心林地9个地点不同林分的空气负离子浓度进行了实地观测,分析了其变化规律,并于2011年12月观测了其中三种林分距离地面不同高度处的空气负离子含量及空气温湿度,分析了空气负离子含量与空气温湿度的相关性。结果如下:(1)9个不同地点林分的空气负离子浓度介于550～2 150个/cm3之间,不同林分空气负离子浓度差异显著;(2)一天中不同时刻、不同林分的空气负离子浓度不同,且不同林分的空气负离子波峰值出现的时刻不同;(3)负离子浓度随着高度的上升而显著减小,不同高度处空气质量评价指标CI值的差异不显著;(4)在近地面0.5 m处空气负离子浓度和空气质量评价指标CI值均与温度呈负相关,与相对湿度呈正相关。

The Variation of Air Anion Concentration of Ecological Forest in Yunyong

The air anion concentrations in ecological forest were studied in 2009 and 2011 in Yunyong, Foshan, Guangdong. The results are as follows： （ 1 ） Air anion concentration in 9 different stands were between 550-2 150 cm-3, with significant differences among them; （2） Air anion concentrations varied with time and stands, the highest and lowest concentration were recorded at different moments in different stands; （3） Air anion concentrations decreased sharply with the increase of height, the CI values in different heights have no significant differences ; （4） In the height of 0.5 m, air anion concentrations and CI values were significantly negatively corre- lated with temperature, and positively correlated with relative humidity.