七仙岭国家森林公园冬季空气负离子分布与评价

Wintertime Negative Air Ions Distribution and its Evaluation in Qixian Mountain National Forest Park

为研究热带雨林的空气负离子水平及空气质量,对海南七仙岭国家森林公园冬季的空气负离子浓度和空气温度、相对湿度进行了同步监测,并作相关性分析.结果表明:海南七仙岭国家森林公园冬季空气负离子含量在国内森林公园中处于较高水平,浓度范围在1100~15000个·cm^(-3),达到保健水平以上.通过相关性分析发现七仙岭空气负离子浓度随海拔高度先增加后降低;随相对湿度增加而显著增大;随气温升高而减小,但相关性不显著.利用森林空气离子评价指数对七仙岭空气质量进行评价,其中水体环境的空气质量达到Ⅰ级和Ⅱ级,雨林环境的空气质量为Ⅲ级和Ⅳ级,入口广场为Ⅴ级.

In order to investigate the negative air ions in tropical rainforest,by choosing Qixian Mountain National Forest Park as a monitoring spot,the concentration of air ions,temperature and relative humidity were measured simultaneously during wintertime.The results indicated that the concentration of negative air ions of Qi-xian Mountain achieved a high level of standard—ranging from 1100 ~ 15000/cm^3—compared with other domestic forest parks in winter.And the concentration of negative air ions first increased and then decreased with the increase of altitude.The correlation analysis indicated that the concentration of negative air ions has a remarkably positive correlation with the variation of relative humidity.Though decreased with the rise of temperature,its correlation with temperature was not obvious.Air quality was assessed by using evaluation index of forestry air ion,which showed that the air quality of water environment ranked around level Ⅰ and Ⅱ,tropical rainforest environment ranked around level Ⅲ and Ⅳ,and the entrance square only reached level Ⅴ.