摘要
文章重点讨论了北京市玉渊潭公园春季负离子等级、负离子浓度的日变化以及温度、湿度对负离子变化的影响。在测定过程中,将玉渊潭公园分为乐园区、滨水区、铺路区、绿化区,使用DLY-3G型大气离子测量仪分别对每个区的负离子浓度进行测量,并采取单级系数和安培空气质量评价系数对负离子浓度等级进行评价。结果表明,玉渊潭公园乐园区、滨水区、铺路区及绿化区负离子释放量由少到多,4个功能区负离子等级分别为允许范围、一般清洁、一般清洁、中度清洁;乐园区、滨水区、铺路区及绿化区负离子在不同时刻呈现出不同的浓度值,且日变化都呈"双峰"型;对负离子浓度随温度、湿度变化的相关性进行分析,得出玉渊潭公园负离子浓度变化与温度成正相关关系、与湿度成负相关关系。综上所述,玉渊潭公园是一个休闲娱乐的好去处。
The article focuses on the daily variation of anions concentration of Yuyuantan Park in Beijing in spring and its level and the influence of temperature and humidity on the changes. In the experiment, the Park was divided into 4 parts named recreation area, waterfront area, paving area and green area, and the concentration was measured respectively and evaluated with the method of ion polarity ratio and air ion assessment index. As a result, the 4 parts released a quantity from less to more and showed a level as allowed band, general cleaning, general cleaning and moderate cleaning for recreation area, waterfront area, paving area .and green area. Daily variation of anions concentration in the Park shows different concentrations at different times in one day and emerges a twin peaks type. Correlation of anions concentration change with temperature and humidity was analyzed, and it indicated that the concentration changes with temperature in a positive trend and a negative trend with the humidity. In a word, Yuyuantan Park is a nice choice to enjoy outside.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2014年第3期159-164,共6页
Environmental Science & Technology
基金
北京市教委环境科学与工程重点建设学科资助(PXM2012_014213_000042)
关键词
空气负离子
评价
日变化
温度
湿度
air anion
evaluation
daily variation
temperature
humidity
