鸡公山空气负离子分布规律及其与环境因子的关系

Variation of Negative Air Ion and Its Relationship with Environmental Factors in Jigongshan

利用空气负离子测定仪对鸡公山不同生境、不同天气条件下的空气负离子分布状况进行连续的定位观测,探讨鸡公山空气负离子浓度的日变化和季节变化规律,并进一步分析空气负离子浓度与气温、空气相对湿度等环境因子之间的关系.研究结果表明:(1)不同生境的空气负离子浓度大小依次为瀑布>溪流>湖泊>阔叶林>针叶林>针阔混交林>灌丛;(2)不同天气条件下空气负离子浓度大小为:雨过天晴>晴天>阴天;(3)空气负离子浓度的日变化规律呈现出先降低再升高的趋势,即早晨最高,中午降至最低,下午又逐渐升高;(4)空气负离子浓度的季节差异显著,夏季>秋季>春季>冬季;(5)空气负离子浓度与气温和空气湿度均呈现出正相关的趋势.

The variation of negative air ion concentration and its relationship with environmental factors were examined using an air ion monitor （ITC-201A） in Jigongshan. The daily variation and seasonal variation of negative air ion in different environments were focused. In addition, the relationships between negative air ion and environments such as air temperature and humidity were analyzed. Our results showed that （ 1 ） the concentration of negative air ion in different ecological zones decreased in the order as follows： waterfall 〉 stream 〉 lake 〉 broad-leaved forest 〉 coniferous forest 〉 coniferous and broad-leaved mixed forest 〉 shrub land; （2） the concentration of negative air ion in the dif- ferent weather conditions was ： rainy 〉 sunny 〉 cloudy ; （ 3 ） The density level of negative air ion was the highest in the morning, the lowest at noon, and was gradually increased in the afternoon; （4） the average concentration of negative air ion was highest during summer and lowest during winter; （5） the concentration of negative air ion was also positively correlated with temperature and relative humidity. Our results suggested that the negative air ions concentrations obviously increased in the areas where water is moving.