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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (30): 101-107.doi: 10.11924/j.issn.1000-6850.casb2022-0911

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Variation of Negative Oxygen Ion and its Relationship with Main Meteorological Factors in Qianshan National Forest Park

GONG Miao1,2(), WANG Xiaorong2,3, LIU Qingping1,2, HE Yong1, XIA Shaodan1,2, HU Xingyi2,3()   

  1. 1 Xianning Academy of Forestry, Xianning, Hubei 437100
    2 National Positioning Observation and Research Station of Bamboo Forest Ecosystem in Mufu Mountain, Xianning, Hubei 437100
    3 Hubei Academy of Forestry, Wuhan 430075
  • Received:2022-10-31 Revised:2023-01-13 Online:2023-10-25 Published:2023-10-19

Abstract:

Air negative oxygen ion has the effect of improving human immunity and regulating function balance and is known as “air vitamin”. However, due to the difference of regional ecological environment conditions, it is uncertain to explain the change of air negative oxygen ion reasonably. Thus, it is of great significance to study the characteristics of air negative oxygen ion concentration and its influencing factors in a specific area for further revealing the change mechanism of air negative oxygen ion and carrying out regional air quality assessment. In this study took air negative oxygen ions in Qianshan National Forest Park of Mufu Mountain area of Hubei Province as the research object, and used the long-term dynamic monitoring data to analyze the characteristics of diurnal, monthly and seasonal variations of the concentration of negative oxygen ions in the air and the assessment of the concentration level. The relationship between negative oxygen ion and air temperature, relative humidity, wind speed, PM2.5 and other environmental factors was studied as well, so as to provide scientific basis for environmental quality assessment and ecological service function assessment in this region. The results showed that the distribution of negative oxygen ion concentration showed obvious seasonal variation, with the highest concentration in summer and the lowest concentration in winter, and the overall pattern was summer > autumn > spring > winter. The maximum monthly mean was in August and the minimum monthly mean was in January. The concentration of negative oxygen ions was positively correlated with air temperature, negatively correlated with relative humidity and PM2.5, and had no obvious correlation with wind speed. The mean concentration of negative oxygen ions in Qianshan National Forest Park was 2191/cm3, which had excellent air negative oxygen ion ecological health resources.

Key words: negative oxygen ion, concentration characteristics, environmental factors, grade evaluation, Qianshan National Forest Park