摘要
本文以定点实测空气负离子浓度为基础数据,借助数理统计分析、ArcGIS空间分析、Pearson相关分析和多元线性回归分析对2020年上杭城区空气负离子浓度时空分布及影响因素进行研究,结果表明:(1)在时间维度上,不同季节空气负离子浓度平均值从大到小排序为秋季、冬季、春季、夏季,超过清新空气负离子浓度标准监测点数量占比从大到小排序为秋季、春季、冬季、夏季,空气离子评价系数CI均值从大到小排序为秋季、春季、冬季、夏季;(2)在空间维度上,空气负离子浓度较高区域主要集中在林地和水体,较低区域主要集中在中心城区,林地和水体C_(I)全年平均值较高,道路与交通设施用地C_(I)全年平均值最低;(3)空气负离子浓度在冬季受空气正离子浓度、相对湿度和PM_(10)的影响;春季受空气正离子浓度影响;夏季受空气正离子浓度和PM_(10)的影响;秋季受空气正离子浓度、CO_(2)浓度、PM_(2.5)、PM_(10)和其他颗粒污染物的影响。
Based on the fixed point measurement as base data,this paper studied the spatio-temporal distribution of negative air ion concentration and its influencing factors in Shanghang city in 2020,by means of mathematical statistics analysis,ArcGIS spatial analysis,Pearson correlation analysis,multiple linear regression analysis and other methods.Results indicate that in terms of timing dimension,the average negative air ion concentration in the four seasons is compared from maximum to minimum in the order of autumn,winter,spring and summer,and the number of monitoring points exceeding the threshold in the four seasons is compared from maximum to minimum in the order of autumn,spring,winter and summer,while the mean value of C_(I) in different seasons was compared from maximum to minimum in the order of autumn,spring,winter and summer.From the spatial dimension,the areas with higher negative air ion concentration are mainly concentrated near the woodland and water body,while the areas with lower negative air ion concentration are mainly concentrated near the central city.Meanwhile,the annual mean value of C_(I) near the forest land and water body is higher,and it becomes the lowest near the road and traffic.The influencing factors of negative air ion concentration in Shanghang city at different time scales are determined as the positive air ion concentration,relative humidity and PM_(10) in winter.While in spring the negative air ion concentration is mainly influenced by the positive air ion concentration.In summer,it is influenced by the positive air ion concentration and PM_(10).In autumn,it is affected by the positive air ion concentration,CO_(2),PM_(2.5),PM_(10) and other particle pollutants.
作者
唐堇洢
王梦楠
胡希军
罗紫薇
吴家荣
TANG Jin-yi;WANG Meng-nan;HU Xi-jun;LUO Zi-wei;WU Jia-rong(Institute of Urban and Rural Landscape Ecology,Hunan Big Data Engineering Technology Research Center of Protected Areas Landscape Resources,College of Landscape Architecture,Central South University of Forestry and Technology,Changsha 410004,China)
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2023年第5期124-135,共12页
Journal of Natural Science of Hunan Normal University
基金
国家林业和草原局重点学科资助项目(林人发[2016]21号)
湖南省“双一流”培育学科资助项目(湘教通[2018]469号)。
关键词
空气负离子浓度
时空分布
季节性差异
影响因素
上杭城区
negative air ion concentration
spatio-temporal distribution
seasonal differences
influencing factors
Shanghang city
