摘要
空气中的大气颗粒物是城市环境污染的主要组成部分,分析道路绿化植物的滞尘效果及规律对城市环境的改善有重要意义。在2017年5~8月长春市新城大街采集银中杨、山杏、白桦、紫椴、蒙古栎、山槐、元宝枫、稠李、水曲柳9种落叶乔木叶片,采用叶面尘洗脱法测算各月份9种落叶乔木单位面积滞尘量,根据叶面积经验公式推算单株日均滞尘量,并采用逐步回归统计法分析雨后1d各树种的单位面积滞尘量影响的主要环境因素。结果表明:相同月份不同落叶乔木的单位叶面积与单株日均滞尘量存在差异,银中杨与山杏在5~8月中单位叶面积滞尘量显著高于其他7种落叶乔木的单位叶面积的滞尘能力,银中杨与山杏的单株日均滞尘量明显高于其他树种,蒙古栎的单位叶面积滞尘量较低。7~8月,稠李的单位叶面积滞尘量较低,而单株滞尘量则明显高于白桦、蒙古栎的单株滞尘量。5~8月,9种落叶乔木的单位面积滞尘量随月份升高呈不同程度增加趋势,银中杨、山杏与蒙古栎的单位叶面积滞尘量与单株日均滞尘量更稳定,而稠李与元宝枫的单位叶面积滞尘量与单株日均滞尘量受群落组成及生长习性的影响随月份变化幅度较大。通过逐步相关分析可知,温度、相对湿度、车流量与降雨风速是影响银中杨、水曲柳、元宝枫等7种落叶乔木的主要影响因素,单位叶面积滞尘量与降雨风速、采样时的温湿度呈正相关,与车流量呈负相关。
Atmospheric particulate in air is the main component of urban environmental pollution,Analyzing the dust retention effect and law of road greening plants is great significance for the improvement of urban environment.From may to August,2017,the leaves of 9 species of deciduous trees such as Populus alba'Berolinensis',Armeniaca sibirica,Betula platyphylla,Tilia amurensis,Quercus mongolica,Albizia kalkora,Acer truncatum,Padus racemosa and Fraxinus mandshurica in Xincheng street of Changchun city were collected,the dust retention per unit area of 9 species of deciduous trees in each month were calculated by using the foliar dust eluting method,and the dust retention per plant was calculated according to the empirical formula of leaf area,Then,stepwise regression statistical method was used to analyze the main environmental factors affecting dust retention per unit area of each tree species on 1d after rain.the results showed that dust retention per unit leaf area and per plant of deciduous trees were differences in same month.Dust retention per unit area of Populus alba and Armeniaca sibirica were significantly higher than other 7 species of deciduous trees from May to August.Dust retention per unit area of Quercus mongolica was respectively lower than other deciduous trees.Dust retention per plant of Padus racemosa was apparently higher than Betula platyphylla and Quercus mongolica's dust retention per plant,nevertheless,dust retention per unit leaf area of Padus racemosa was lower between July and August.Dust retention per unit area of 9 deciduous trees had the varying degree ascension with the increase of months from May to August,dust retention per unit leaf area and per plant of Populus alba,Armeniaca sibirica and Quercus mongolica were respectively stabilize,Padus racemosa and Acer truncatum's dust retention per unit leaf area and per plant had varied greatly with the month by the influence of community composition and plant habit.Temperature,relative humidity,vehicle flow and wind speed before sampling were t
作者
崔磊
韩鑫
韦旗风
蔡阳
CUI Lei;HAN Xin;WEI Qi-feng;CAI Yang(College of Horticulture,Jilin Agricultural University,Changchun 130118,China)
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2020年第3期335-342,共8页
Journal of Shenyang Agricultural University
基金
吉林省教育厅项目(JJKH20180664KJ)
吉林农业大学博士启动基金项目(201622)。
关键词
落叶乔木
单位面积滞尘量
单株日均滞尘量
动态对比
deciduous trees
dust retention per unit area
average daily dust retention per plant
dynamic comparison
