城市公园空气负离子浓度变化特征及评价研究——以天津双拥公园为例  

Study on variation characteristics and evaluation of air anionconcentration in urban parks——Taking Shuangyong park as an example

作　　者：梁祝 关贺琳 刘海荣 冀媛媛 Liang Zhu;Guan Helin;Liu Hairong;Ji Yuanyuan(College of Horticulture and Landscape,Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津农学院园艺园林学院,天津300392

出　　处：《天津农学院学报》2024年第6期44-50,共7页Journal of Tianjin Agricultural University

基　　金：国家艺术学青年基金项目(17CG202)。

摘　　要：以天津市双拥公园为代表样地,对公园及其内部不同植物类型群落样点的空气离子浓度日变化、季节性变化进行测定,进一步研究负离子浓度与环境因子相关性,并根据单极系数及安倍空气质量评价指数选出公园空气质量最优时间段,以指导周边居民在合适时间段进行户外锻炼。结果表明,从全年负离子浓度观测结果来看,常绿针叶植物群落负离子浓度值随季节表现为:春季>秋季>夏季>冬季,落叶阔叶植物群落表现为:春季>夏季>秋季>冬季;城市公园空气负离子浓度日变化呈“U”字形变化趋势,最小值多出现在13:30—15:30,不同植物配置略有不同;根据对公园春、夏、秋三季空气质量CI进行评估可知,公园空气质量最优时间段主要为8:00—11:00和17:00,达清洁空气标准,较适合周边居民进行户外健身锻炼,而在12:00和14:00空气质量为轻微污染等级,不建议居民进行长时间户外活动。Taking shuangyong park in tianjin as a representative sample plot,the daily and seasonal changes of air ion concentration in the park and its different plant communities were measured to study the correlation between negative ions concentration and environmental factors.According to the unipolar coefficient and Abe air quality evaluation index the optimal time period of air quality in the park were selected to guide the surrounding residents to exercise outdoors in a suitable period of time.The results showed that from the observation results of negative ions concentration in the whole year,the negative ions concentration of evergreen conifer community showed spring>autumn>summer>winter;The performance of deciduous broad-leaved plant community was spring>summer>autumn>winter;The daily change of air ions concentration in urban parks showed a“U”shape change trend with the minimum value mostly between 13:30 and 15:30 and slight difference among different plant configurations.According to the assessment of the air quality CI of the park in spring,summer and fall,the optimal time period of the park’s air quality mainly distributed at 8:00-11:00 and 17:00,when the air reached the clean air standard and was more suitable for outdoor exercise for the surrounding residents;Whereas at 12:00 and 14:00 in the afternoon,the air was slightly pollutedI and it was not recommended to carry out outdoor activities for a long period of time.

关 键 词：城市公园 负离子浓度 空气质量 环境因子相关性 

分 类 号：X823[环境科学与工程—环境工程]