资溪县城空气负离子特征及与气象因子相关性分析

Air anion concentration characteristics and its correlation with meteorological factors in Zixi county

通过对江西省资溪县连续608 d空气负离子日观测数据进行分析,结果表明:资溪县城空气负离子浓度平均值为4103个/cm3;负离子浓度有明显的日变化规律,早晨最高,为4569个/cm3,中午最低,为3411个/cm3;负离子浓度还具有明显的季节变化规律,春季最高,5月平均为5283个/cm3,秋季最小,10月平均只有2709个/cm3。负离子浓度与气象因子关系密切,其中与日照时数呈现出极显著的线性负相关,相关性F值为14.12,与降水量有显著的线性正相关;F值为3.484,与日平均气温、相对湿度的线性相关均不显著。

Based on 608 days＇ continuous observation data of air anion concentration in Zixi county of Jiangxi province, the change characteristics of air anion concentration and its correlation with meteorological factors were analyzed. The results indicated that the average of air anion concentration was 4103 per cubic centimeter. Diurnal changes of air anion concentration were obvious. The highest and the lowest concentrations were 4569 per cubic centimeter in morning and 3411 per cubic centimeter at noon, respectively. The seasonal changes of air anion concentration were also distinct. The highest and the lowest were 5283 per cubic centimeter in May of spring and 2709 per cubic centimeter in October of autumn, respectively. In addition, there was a close relationship between air anion concentration and meteorological factors. For instance, the correlation between air anion concentration and sunshine duration was negative and F value was 14.12, while the correlation between air anion concentration and precipitation was positive and F value was 3. 484. However, the correlations between air anion concentration and diurnal average air temperature and relative humidity were not significant.