吊罗山热带雨林空气负离子含量变化特征初探

Diurnal and Seasonal Variation Characteristics of NAIC and Their Relation with Meteorological Elements in Diaoluoshan Tropical Rainforest

空气负离子不仅可以净化空气,达到一定含量后还对人体具有医疗保健作用。森林空气中丰富的负离子已成为一种重要的旅游资源。研究热带雨林空气负离子分布特征及其与气象要素之间的关系,可为热带雨林空气负离子资源的开发与利用提供科学依据。以吊罗山热带雨林为研究区,分析热带雨林中空气负离子含量的日变化、季节变化特征及其与气象要素之间的关系。结果表明:1)空气负离子含量的季节变化为夏季>春季>秋季>冬季。2)春、夏、秋3季热带雨林空气负离子含量的日变化曲线近似双峰型(M型),两个波峰分别为9—10时左右和15—16时左右,波谷均出现在12时左右。冬季近似单峰型,峰值出现在15时左右,最低值出现在12—13时左右。3)夏季空气负离子含量与风速负相关,与相对湿度正相关;秋季空气负离子含量与气温、相对湿度均呈正相关关系。

Negative air ions have the effects of clean air and healthcare when reaching a certain concentra-tion.The abundance of negative air ions in tropical forest has become an important tourism resource.The research on the characteristics of Negative Air Ion Concentration(NAIC)and their relation with meteoro-logical elements in tropical rainforest can provide a scientific basis for its development and exploita-tion.NAIC and meteorological elements(rainfall,wind velocity,air temperature,relative humidity)are de-termined in the Diaoluoshan Tropical Rainforest.NAIC diurnal variations in different seasons,NAIC sea-sonal variations,and their relation with meteorological elements are analyzed.Also,the NAIC healthcare functions of Diaoluoshan rainforest are evaluated.The results show that:(1)NAIC is the highest in sum-mer,followed by spring and autumn,and the lowest in winter.(2)Diurnal variation curves of spring,sum-mer and autumn are similar to ‘M’,the two peaks appear at about 9:00 -10:00 and 15:00 -16:00,re-spectively,the trough appear at about 12:00.Diurnal variation curve of winter is similar to single peak wave,the peak appear at around 15:00,the trough 12:00 -13:00.(3)In summer,NAIC and wind veloc-ity are negatively related,NAIC and relative humidity are positively related;in autumn,there is a positive relationship between NAIC and air temperature,relative humidity;no siginficant relationship is found be-tween NAIC and the determined meteorological elements.