福州城郊不同游憩空间大气颗粒物浓度的变化规律--以福建农林大学校园为例

摘要

To evaluate air quality of suburb recreational regions for higher rationality of planning, atmospheric particulate matter concentration ( APMC) and meteorological factors from 16 observation stations of 5 types were recorded and interpreted. Result showed that APMC was averagely low in summer and high in winter, those of spring and autumn fluctuated between this range. APMC diameters also changed between summer and winter. Types and conditions of recreational regions had great influence on APMC at different diameters, and the changing rule varied among different seasons. Environmental factors, including maximum and average wind speed, air pressure, wet bulb index, thermal index, humidity and temperature, all affected concentrations and diame-ters of particulate matter. Furthermore, plant configuration setting posed significant impacts on temperature, humidity, wind speed and atmospheric particulate matter. To summarize, improving site condition plays a pivot role on reducing APMC and should be un-der prudent consideration when urban planning.%为合理评价城郊游憩地改善生态环境功能，提高规划合理性，对5类16个游憩监测点进行大气颗粒物浓度、气象因子4季监测，分析同一环境不同类型游憩地大气颗粒物浓度变化规律及特征。结果表明：(1)大气颗粒物浓度整体表现为夏季低，冬季高，春、秋季不同粒径大气颗粒物浓度变化介于夏季与冬季之间；(2)不同类型游憩地立地条件对各粒径大气颗粒物浓度有较大影响，且随季节变化各粒径大气颗粒物浓度变化规律有所不同；(3)影响大气颗粒物的环境因子有风速、气压、湿度、温度等；(4)不同立地条件对大气颗粒物、温度、湿度、风速等有显著影响，改善立地条件，对降低大气颗粒物浓度，提高环境功能有积极作用。