不同城建绿地内PM2.5浓度季节变化及其与气象因子的关系  

Seasonal Variation of PM2.5 Concentration and Correlations with Meteorological Factors in Different Urban Green Spaces

作　　者：黄芳 章银柯[2] 张天然 李晓璐 于慧 袁楚阳 莫莉 邵锋[1] HUANG Fang;ZHANG Yin-ke;ZHANG Tian-ran;LI Xiao-lu;YU Hui;YUAN Chu-yang;MO Li;SHAO Feng(School of Landscape Architecture,Zhejiang A&F University,Hangzhou 311300,China;Hangzhou Botanical Garden,Hangzhou 310012,China;Monitoring Centre for Soil,Agriculture and Rural Ecology and Environment,Ministry of Ecology and Environment,Beijing 100012,China)

机构地区：[1]浙江农林大学风景园林与建筑学院,浙江杭州311300 [2]杭州植物园,浙江杭州310012 [3]生态环境部土壤与农业农村生态环境监管技术中心,北京100012

出　　处：《浙江林业科技》2021年第1期16-23,共8页Journal of Zhejiang Forestry Science and Technology

摘　　要：以杭州市临安区4种不同类型的城建绿地(居住区绿地、商业绿地、公共服务设施绿地和广场绿地)为研究对象,在2017年3月-2018年2月,采用实地测量法对绿地内的PM2.5浓度及气象因子(温度、相对湿度和风速)进行监测,研究城建绿地内PM2.5浓度的时空变化规律及其与气象因子的关系。结果表明,不同绿地的PM2.5浓度季节变化均表现为冬季>秋季>春季>夏季;春、夏和冬3个季节的PM2.5浓度依次为商业绿地>居住区绿地>公共服务设施绿地>广场绿地,秋季为商业绿地>居住区绿地>广场绿地>公共服务设施绿地;绿地内PM2.5浓度日变化受人为活动和交通排放影响较大,在下班高峰时段(17:00-20:00)表现尤为明显;气象因子对PM2.5浓度变化有重要影响,绿地内的PM2.5浓度与温度呈极显著负相关(P<0.01)、与相对湿度呈显著正相关(P<0.05)、与风速显著相关(P<0.05)。Determinations were implemented on PM2.5 concentration and meteorological factors(temperature,relative humidity and wind speed)in the four different urban green spaces in Lin’an district,Zhejiang province from March 2017 to February 2018.The results showed that the seasonal variations of PM2.5 concentration in different green spaces were followed by winter>autumn>spring>summer.PM2.5 concentration in the spring,summer and winter was ordered by commercial area green space>residential district green space>public service facilities green space>square green space,and in the autumn was by commercial area green space>residential district green space>square green space>public service facilities green space.The daily variation of PM2.5 concentration in above-mentioned green spaces was greatly affected by the flow of people and traffic emissions,which was particularly pronounced during the off-hours peak(17:00-20:00).There was a extremely significant negative correlation of PM2.5 concentration in green spaces with temperature(P<0.01),but significant positive correlation with relative humidity(P<0.05),and correlation with wind speed(P<0.05).

关 键 词：城建绿地 PM2.5 气象因子 相关性分析 临安 

分 类 号：X171[环境科学与工程—环境科学]