城市森林空气负氧离子浓度变化规律研究  

Study on the concentration characteristics of air negative oxygen ions in urban forest

作　　者：李高飞[1] 李巧云[1] 颜立红[1] 廖菊阳[1] LI Gaofei;LI Qiaoyun;YAN Lihong;LIAO Juyang(Hunan Forest Botanican Garden ,Changsha 410116,China)

机构地区：[1]湖南省森林植物园,湖南长沙410116

出　　处：《湖南林业科技》2019年第2期52-56,共5页Hunan Forestry Science & Technology

基　　金：湖南省林业科技计划项目(XKL201716)

摘　　要：为探索城市森林环境空气负氧离子水平,2016年9月至2017年8月,采用便携式负离子监测仪对湖南省森林植物园不同林分森林环境空气负氧离子浓度进行了观测,根据获取的资料分析了湖南省森林植物园空气负氧离子的季、月和日变化特征,以及空气负氧离子与气象因子的相关关系。结果表明:湖南省森林植物园负氧离子浓度年平均值为845个·cm^(-3);季变化中,其最大值出现在夏季,平均949个·cm^(-3),最小值出现在冬季,平均440个·cm^(-3);月变化中,其最大值出现在8月,平均1 071个·cm^(-3),最小值出现在1月,平均310个·cm^(-3);在日变化中,上午06:00—07:00空气负氧离子浓度最高,平均1 600个·cm^(-3),中午12:00—13:00最低,平均620个·cm^(-3)。温度与负氧离子浓度表现出正相关,而湿度与负氧离子浓度表现出负相关。针叶林的空气负氧离子浓度要高于阔叶林。To explore the negative oxygen ion level of urban forest air ,the concentration of air negative oxygen ions in different forest types of Hunan Forest Botanical Garden was observed by means of manual observation from June 2016 to May 2017, characteristics of air negative oxygen ions of seasonal, monthly and daily variation in Hunan Forest Botanical Garden were analyzed based on the obtained data. The results showed that the annual average concentration of negative oxygen ions per cm^ 3 in Hunan Forest Botanical Garden was 845, the maximum concentration of negative oxygen ions was 949 in summer, the minimum concentration of negative oxygen ions was 440 appeared in winter. In monthly variation the maximum concentration of negative oxygen ions per cm ^3 was 1 071 appeared in July, the minimum concentration of negative oxygen ions was 310 appeared in January. The concentration of negative oxygen ions per cm^ 3 was highest in the morning 6:00-7:00 was 1 600, the concentration of negative oxygen ions per cm^3 was lowest at noon 12:00-13:00 was 620.Concentration of negative oxygen ion is positively correlated with temperature while is negatively correlated with humidity,The air negative oxygen ion concentration in coniferous forest was higher than that in broadleaf forest.

关 键 词：空气负氧离子 分布规律 针叶林 阔叶林 城市森林 

分 类 号：S78[农业科学—林学]