周文昌 潘磊 崔鴻俠 喻單寧 戴薛 蔡明



摘 要: 為了探討城市森林生態系統空氣負離子濃度的季節動態變化規律,采用了FLZ1型大氣負離子自動觀測系統研究武漢市九峰森林公園空氣負離子濃度日變化和季節動態規律。結果表明:九峰國家森林公園空氣負離子濃度存在明顯的季節變化規律,2014年5月至10月的空氣負離子濃度月平均值分別為610、640、973、902、987、793個/cm3,表明夏季和秋季是森林空氣負離子濃度較高的季節。森林公園空氣負離子濃度存在明顯日變化規律,表現為凌晨0600至0800出現峰值或傍晚1800后呈現增加趨勢,說明清晨太陽初升時及傍晚前后是一天內森林空氣負離子濃度較高的時間段。另外,春季(5月)、夏季初期(6月)和秋季末(10月),溫度是影響森林公園空氣負離子濃度的主導因素,而仲夏(7月和8月)和秋季初期(9月),降雨量是影響森林公園空氣負離子濃度的主導因素,但是并未發現空氣負離子濃度日平均值與空氣溫度和濕度日平均值存在顯著線性關系。
關鍵詞: 空氣負離子;森林公園;武漢市
中圖分類號:X16 文獻標識碼:A 文章編號:1004-3020(2018)01-0001-05
Aero-anionon Centration in Jiufeng National Forest Park in Wuhan City
Zhou Wenchang(1) Pan Lei(1) Cui Hongxia(1) Yu Shanning(2) Dai Xue(1) Cai Ming(3)
(1.Hubei Academy of Forestry Wuhan 430075;2.Investigation and Planning Institute of Hubei ProvinceWuhan 430079;3.Hubei Meteorological Administration Wuhan 430074)
Abstract: To find out the seasonal dynamic variation and diurnal variation of aero-anion concentration in urban forest ecosystem. As the aero-anion concentration automatic observation system, the FLZ1 model was used in the Jiufeng national forest park in Wuhan city. Our research showed that the aero-anion concentration in the Jiufeng national forest park observed obvious seasonal change. Every month mean aero-anion concentration from May to October in 2014 was about610, 640, 973, 902, 987, and 793 ind/cm3, respectively. They were suggested that the best tourist season for aero-anion is summer and autumn. In additional, Obvious diurnal variation pattern of aero-anion concentration was observed, the peak value was from Beijing time from 0600 to 0800 am (before the sun rises) or after 1800 pm (after the sun goes down), our result showed that people get the best at forest park when the sun rises and the sun goes down. In addition, on the early spring (May), summer (June) and fall (October), the air temperature seem to be the dominant factors influencing the aero-anion level in he forest park, and on the summer (July and August) and the early autumn (September), the rainfall seem to be the dominant factors influencing the forest park of air negative ions concentration,but did not find significant linear relationship between the daily mean aero-anion concentration and daily mean air temperature and humidity.
Key words: aero-anion concentration;forest park;Wuhan city
空氣負離子也稱為負氧離子,主要來源于紫外線、宇宙射線、放射性物質而引發的空氣電離作用,山林、樹冠、植物葉尖放電,及雷電、瀑布、海浪的沖擊,也能促使空氣電離,從而產生負離子[1,2]。空氣負離子對人類健康能夠起到重要促進作用,被譽為“空氣維生素和生長素”,它的濃度水平已成為衡量城市空氣質量的一項重要指標[3]。有……