摘要
基于车载移动监测系统,对丰台区各类型道路、不同季节典型道路的积尘负荷特征进行分析.探讨不同环线区域内的道路车流量、积尘负荷、扬尘排放量的变化规律及原因,并运用ArcGIS软件得到道路扬尘积尘负荷和排放量的空间分布图.结果表明,各类型道路的积尘负荷均值和道路扬尘排放因子的大小顺序都为支路>次干道>主干道>快速路.车流量对道路扬尘积尘负荷和排放强度的影响呈反向关系.PM_(2.5)、PM_(10)和TSP的年排放量分别为1824、7539、39274t·a^(-1).从PM_(2.5)的年排放空间分布上来说,三环内网格排放量较大,其次是三环至四环,六环外的单位面积道路扬尘排放量最小.不同环线区域内的单位面积车流量和排放量大小顺序为三环内>三环至四环>四环至五环>五环至六环>六环外.而三环内、三环至四环、四环至五环、五环至六环、六环外的年均积尘负荷分别为0.67、0.73、0.76、0.80、0.79g·m^(-2).
This paper attempted to study the characteristics of silt loading on various types of roads and seasonal variation of silt loading on typical roads in Fengtai District,based on the vehicle⁃mounted navigation monitoring system.We discussed the changing trend and related causes of the road traffic flow,silt loading,and fugitive road dust emission for the different loop roads,and analyzed the spatial distribution of silt loading and fugitive road dust emission using ArcGIS software.The results showed that the silt loading and fugitive road dust emission factors in various types of roads should be ranked as:branch road>minor road>main road>expressway.The traffic flow was inversely related to the silt loading on the road and the emission intensity.The annual fugitive dust emissions of PM_(2.5),PM_(10) and TSP on the roads within Fengtai District were 1824,7539,39274 t·a^(-1),respectively.In terms of the spatial distribution of annual PM_(2.5) emissions,the grid emissions within the 3rd ring road were largest,followed by the roads between the 3rd and4th ring,and the fugitive dust emission per unit area on the roads outside the 6th ring was the smallest.The traffic volume and emissions per unit area were ranked as:roads within the 3rd ring>roads between the 3rd and 4th ring>roads between the 4th and 5th ring>roads between the 5th and 6th ring>roads outside the 6th ring.The annual silt loading on these roads were 0.67,0.73,0.76,0.80,0.79 g·m^(-2),respectively.
作者
刘俊芳
樊守彬
郭秀锐
崔浩然
申亚倩
LIU Junfang;FAN Shoubin;GUO Xiurui;CUI Haoran;SHEN Yaqian(College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124;Beijing Municipal Research Institute of Environmental Protection,Beijing 100037;National Engineering Research Center of Urban Environmental Pollution Control,Beijing 100037)
出处
《环境科学学报》
CAS
CSCD
北大核心
2021年第11期4423-4429,共7页
Acta Scientiae Circumstantiae
基金
北京市科技计划项目(No.Z191100009119011)。
关键词
丰台
道路积尘负荷
排放清单
空间分布
Fengtai
road silt loading
emission inventory
spatial distribution
