城市森林公園空氣負離子濃度與氣象因子的相關性1)

王非　李冰　周蘊薇

(東北林業大學，哈爾濱，150040)

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城市森林公園空氣負離子濃度與氣象因子的相關性1)

王非李冰周蘊薇

(東北林業大學，哈爾濱，150040)

在位于哈爾濱市市區的黑龍江省森林植物園內，于2014年7、10月份選擇晴朗的天氣定位、同步測定距地面0.8 m處的空氣負離子濃度、風速、溫度、相對濕度、氣壓、風寒、露點溫度、濕球溫度、PM2.5、光照強度，分析不同月份負離子濃度和各氣象因素的相關性、負離子濃度和相關性顯著的各因素之間的關系，并對和負離子有顯著相關性的因子與負離子進行多元回歸分析。結果表明：研究區內，空氣負離子濃度和各氣象因子的相關關系會隨著時間發生變化。7月份，負離子濃度和露點溫度呈極顯著正相關、和PM2.5呈極顯著負相關、和濕球溫度呈顯著正相關，負離子濃度和風速、溫度、風寒、相對濕度、壓強、光照強度無明顯相關關系。10月份，負離子濃度和相對濕度、露點溫度、濕球溫度呈極顯著負相關關系，負離子濃度和壓強呈極顯著正相關關系，負離子濃度和溫度、風寒呈顯著負相關關系，負離子濃度和風速、PM2.5、光照強度無明顯相關關系。7月份負離子濃度和PM2.5相關性最強，10月份負離子濃度和壓強的相關性最強。

黑龍江省森林植物園；空氣負離子；氣象因子；城市環境

In the Heilongjiang Forest Botanical Garden of urban area of Harbin, in July and October 2014, we chose the sunny weather and the range of ground 0.8 m place to measure the negative air ion concentration, wind speed, temperature, relative humidity, air pressure, wind and cold, dew point temperature, wet ball temperature, PM2.5, and light intensity. We analyzed the relationship between different season anion concentrations and meteorological factors of relevance, and the relationship between anion concentrations and the factor with significant correlation. We used multiple regression analysis with negative ions and the anion with significant correlation factor. The concentration in the study area and the correlation various meteorol-ogical factors changed with seasons. In July, the negative air ion concentration was correlated significantly and positively with dew point temperature and wet bulb temperature, while negatively with dust PM2.5, but was not correlated with wind speed, temperature, wind chill, relative humidity, pressure and light intensity. In October, the negative ion concentration had extremely significant negative correlation with relative humidity, dew point temperature and wet bulb temperature, and it had extremely significant positive correlation with pressure. It was significantly correlated with temperature and wind chill, and it had no obvious correlation with wind speed, dust PM2.5and light intensity. The concentration of negative ions and PM2.5were most relevant in July, and the concentration of negative ions and the pressure were the most relevant in October.

當今社會環境問題日益引起人們關注，作為評價空氣清潔度的重要指標，被譽為“環境警察”的空氣負離子濃度(Negative Air Ion Concentration，NAIC以下簡稱為負離子)更是備受重視。許多研究者在探索負離子和各因素的關系，如：風速、溫度、相對濕度、光照、粉塵等對負離子濃度的影響和相關關系，但各自的觀點卻有所不同[1-14]。……