| 摘要: |
| 为研究广州市下半年空气负离子分布的时空特征，利用空气离子测量仪，在广州市选择典型的采集地，分析了广州下半年空气负离子的月际变化以及功能区类型、取样时段、典型环境对空气负离子浓度的影响。结果表明：（1）所测定的几种功能区空气负离子浓度大小顺序为：华南农业大学跃进南宿舍区>广州市白云山>华南农业大学树木园>广州市天河区五山路；（2）月际变化：9月到11月负离子没有明显的变化，而12月负离子含量明显的减少；（3）负离子浓度最大值出现在早上8:00～9:00。一天之内的负离子浓度变化呈早、晚较高，中午低的规律；（4）对广州几种典型环境进行测定，负离子浓度大小顺序为：近水区﹥林中﹥游憩区﹥道路；（5）广州市下半年负离子浓度最大值高达58000个/cm3，而最小值仅为1000个/cm3。 |
| 关键词: 空气负离子浓度 时空特征 变化规律 |
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| 基金项目:致谢：本研究得到华南农业大学大学生科技创新项目资助,华南农业大学林学院苏志尧教授自始至终对本项研究进行悉心指导,在此谨致谢意! |
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| Spatiotemporal Characteristics of Negative Air Ions Distribution in Guangzhou in the Second Half Year |
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Luo Feng
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| Abstract: |
| In order to investigate the tempo-spatial characteristics of negative air ions distribution in Guangzhou from September to November of 2008, we choosed typical plot to make scientific researches, which including the monthly variation of air negative ions, the influences of types of functional zones, sampling timeinterval and typical habitat on air negative charge ion concentration. The results showed that negative ions concentration in the different functional zones was: residential district﹥recreation area﹥forest﹥commercial area. And it had little variation from September to October while decreasing in December, and the maximum negative ions concentration appeared during 8:00～9:00 in the morning. The variation was that the negative ions concentration was high in the morning and at night and low at noon in a day. And the negative ions concentration in the different typical habitat was: waterfront﹥woods﹥recreation area﹥road. The maximum negative ions concentration was up to 58000 ions•cm-3 while the minimum was 1000 ions•cm-3. |
| Key words: negative air ions tempo-spatial characteristics monthly variation |
