Characteristics of Air Anion Distribution in Beach and Forest Environment and the Correlation between Air Anion and the Environmental Factors
Using data for seven years fromthe observation of air anion in Beidaihe, by choosing the meteorological observation, Jinshanzui and Lianfengshan as the typical example of the different ecological environment, this is, the so-called, representative of the urban green space, the beach and the forest. making some line charts of air anion mass concentration, getting some tables on the correlation coefficient which can reflect the relationships between air anionand climate elements and main pollutants. And the significance test must also be done. Doing this, in order to understand the characteristics of air anion distribution, to find out the correllation between air anion and environmental factors in Beidaihe, so, some scientific data can be provide for the environmental protection, the physical rehabilitation of model worker and the development of tourism resources. The results of the study have the following several aspects, (1) Annual average of air anion mass concentration is 1730 ind?cm-3 in seven years, and there are a few small difference on the average value of air anion mass concentration, its highest value is 535 ind?cm-3 more than its lowest value. (2) As for the change on the monthly average of air anion mass concentration in a year, its highest value is 7785 ind·cm-3 in August, its lowest value is 365 ind?cm-3 in January. On the spatial distribution of air anion mass concentration, it is obviously more than elsewhere in beach and forest, the annual average is 3902 ind?cm-3 in beach, it is 5403 ind?cm-3 in forest. (3) According to the diurnal variation of anion distribution in the four seasons, its mass concentration in the daytime is less than nighttime, the peak value of daily variation appeared at night or in the morning, and the lowest was at noon or in the afternoon. (4) Using year as the unit of time scale, there is the positive correlation between air anion mass concentration and annual rainfall day, annual total precipitation, annual thunderstorm day, annual average relative humidity. The negative correlation is between air anion mass concentration and annual average temperature, annual sunshine hours, but there is no significant correlation between annual average of air anion mass concentration and annual number of meteorological elements. (5) The mass concentration of air anion and the mass concentrations of PM2.5 is negative correlated, also being negative correlated between air anion and pollutants, such as nitrogen dioxide, sulfur dioxide, carbon monoxide, but one positive correlation coefficient is between anion and the ozone, and all of them passes the significance test. And (6) lightning can generates a huge amount of air anion.
beach and forestair anionthe environment factorscorrelation coefficient
国家科技期刊平台
NSTL
万方数据
维普
