西径山森林公园夏季空气负离子日变化

对浙江省临安市西径山森林公园内6种典型植物群落的空气负离子浓度、气温、相对湿度、光照强度等进行测定，将公园入口广场与临安市区人民广场作为对照，以此来研究不同群落类型以及各环境因子对空气负离子浓度的影响。结果表明：6种参试群落的空气负离子浓度都明显高于对照，西径山森林公园的平均环境质量明显优于市区；各群落空气负离子浓度由高到低依次为香椿Toona sinensis -紫楠Phoebe sheareri群落＞樟树Cinnamomum camphora-桂花Osmanthus fragrance群落＞杉木Cunninghamia lanceolata群落＞木荷Schima superba-青冈Cyclobalanopsis glauca群落＞青冈-苦槠Castanopsis sclerophylla fragrance群落＞毛竹Phyllostachys pubescens群落；其中5个群落的空气质量达到了最清洁；就植物群落负离子昼间变化来看，从8：00到17：00基本呈双峰状，分别在9：00－10：00和13：00－14：00出现2次峰值；对空气负离子与其他气象因子的相关分析显示，空气负离子与相对湿度极显著正相关（P＜0.01），与气温显著负相关（P＜0.05），与光照强度无明显相关性。图2表5参21

Daily variation of air anions in Mount Xijing Forest Park

The air anions concentration,temperature,relative humidity and light intensity of 6 plant communities in Mount Xijing Forest Park were measured and compared with the data of park entrance square and Lin'an People's Square to study the impacts of different community types and environmental factors on the concentrations of the air anions.The results showed that the air anions concentrations of the 6 communities were much higher than that of the two squares.The average environmental quality of the Mount Xijing...