生态环境学报Issue(6)：979-984,6.
空气负离子浓度分布特征及其与环境因子的关系
Characteristics of negative air ion concentration and its relationships with environmental factors
摘要
Abstract
Atmospheric ions are produced by many natural and anthropogenic sources and their concentrations vary widely between different environments. In this study, we conducted a week’s testing in a southern coastal province, China, where we chose 10 different typical sites to measure and research. The measurements included NAI concentration, PAI concentration, wind speed, air temperature, relative humidity and NAI concentration in materials and plants. The results showed that NAI concentration had a closer relation with wind speed, water, plants and air humidity than other factors, the most important factor was the water, followed by wind, and the minimal was air temperature. Based on the analysis of measured data to come to the conclusions: 1) The air friction can effectively and significantly increase the NAI concentration, and the two show a positive correlation. 2) The separation of positive and negative charges can be accelerated by the water in the impact and the injection process. The faster water flows, the more energy ionization corresponding friction increases. The NAI concentration of the surrounding environment is higher; in the meantime attenuation with distance, the NAI concentration has been reduced in constantly. 3) The NAI concentration is related to the structure and arrangement of species of plant community, the high layer structure of the plant, the lower layer structure of the plant, the lower layer structure of plant. 4) Relative humidity and the NAI concentration have a good correlation. 5) The relationship between temperature and NAI concentration should be further clarified. 6) The appropriate temperature, humidity and wind speed can make people feel comfortable, which are beneficial to human health. 7) All in all, in the natural ecological environment, the NAI concentration is greatest and air cleanliness is a most clean. These results and the analysis has important enlightenment to the city ecological environment construction, the author from the perspective of city planning further puts forward the following suggestions:1) The NAI concentration in the natural environment is a reference standard of the NAI concentration and air cleanliness in the urban environment, and designed to meet the climate and ecological resources running state, which plays an important part in the optimization of urban ecological environment and the level of urban and rural planning and construction. 2) Strengthen the natural ventilation, increasing water landscape design, expansion of green space and reduce unnecessary hard square or pavement, so as to continuously stimulate and maintain negative air ion concentration of the surrounding environment, reduce air pollution, effectively improve the urban ecological environment.关键词
空气负离子浓度/摩擦/风速/水体/植物/温度/相对湿度Key words
negative air ion (NAI) concentration/friction, wind speed/water, plants/temperature/relative humidity分类
资源环境引用本文复制引用
王薇..空气负离子浓度分布特征及其与环境因子的关系[J].生态环境学报,2014,(6):979-984,6.基金项目
2013安徽省教育厅自然科学项目（KJ2013A069）；2014年安徽省高校优秀青年人才支持计划；2011年安徽建筑大学校级教学团队项目 （）
