广西部分景点地面上空气负离子浓度的分布规律

通过对广西11个县市共38个景点的检测结果表明,地面上的空气负离子浓度主要与该地区的植物数量,尤其是树木的数量呈正相关关系。表现为:山林比平地高,乡村比城市高,高楼比低房高,有阵风比无风高,有植物的地方比无植物的地方高,田野比海边高,有瀑布的地方最高。通常土质山林的空气负离子浓度为1000～2000个 cm₃;石质山林<1000个 cm₃;田野为500～800个 cm₃;海边为500个 cm₃左右;城市为300～600个 cm₃;而瀑布附近则达到104个 cm₃数量级。 

The Distribution of Air Anion Concentration above Ground at Some Scenic Sites in Guangxi

The survey among 38 scenic sites of 11 cities and counties in Guangxi demonstrates that there is positive correlation between the air anion concentration above ground and the amount of the plants,especially the trees.The air anion concentration in the mountain forests is higher than that in the flat ground areas;in the rural areas higher than in the urban areas;in high buildings higher than in low buildings;when with breezes higher than with no wind;in places with plants higher than without plants;in fields higher than at seashores;and the highest concentration is at waterfalls.Normally,the anion concentration in soil-ground mountain forests is 1 000～2 000 anions/cm₃,stone-ground mountain forests less than 1 000 anions/cm₃,field 500～800 anions/cm₃,seashores about 500 anions/cm₃,cities 300～600 anions/cm₃,and nearby waterfalls over 10~4 anions/cm₃.