西安市南郊公路运输CO_2排放特征及影响因子研究  

Study of characteristics and affecting factors of CO_2 emission on highway transportation in southern suburbs of Xi'an

作　　者：刘磊[1] 赵景波[1,2] 焦丽铧 邱婴芝 冯嘉诚[1] 王硕[1] 王坤鑫[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062 [2]中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西西安710075

出　　处：《贵州师范大学学报（自然科学版）》2014年第3期104-110,共7页Journal of Guizhou Normal University：Natural Sciences

基　　金：国家大学生创新创业训练计划项目(201310718072)

摘　　要：为查明公路运输CO2浓度的变化特征,分别于2012年7月、8月、11月和2013年4月对西安市南郊长安南路中段近地面大气CO2浓度进行了昼夜观测,并与距离交通线150m处的另一观测点进行对比。观测结果表明,公路运输对近地面大气CO2浓度有着重要影响,交通线旁大气CO2浓度因受车流量影响比距离交通线150m处的观测点高10ppm^20ppm。在日变化上,交通线旁大气CO2浓度呈现出明显的双峰波动,变幅可达80ppm^110ppm;在季节变化上,4月份观测区CO2浓度值最高,7月、8月和11月并无显著差异。此外,大气CO2浓度值与温度呈负相关,而与湿度、气压显著正相关。In order to find out the variable character of atmospheric CO2 concentration in sub-aerial atmosphere above the highway,the research team observed the atmospheric CO2 of Chang＇an Nan Road day and night,and compared it with the other observation spot 150m away from highway. The result revealed that highway transport has a great influence on atmospheric CO2 concentration in sub-aerial atmosphere,and atmospheric CO2 concentration beside the highway is higher than that of observation spot 150m away from highway by 10ppm ～ 20ppm. On diurnal variation of CO2 concentration,there is an obvious double-wave of atmospheric CO2 at two observation spots. And the diurnal variation amplitude of atmospheric CO2 concentration at two observation spots varies from 80ppm to 110ppm. On seasonal variation,the highest CO2 concentration was observed in April,and no obvious difference was found about the diurnal average concentration of CO2 between July,August and November. Furthermore,a negative correlation exists between temperature and atmospheric CO2,but the correlation among humidity,atmospheric pressure and atmospheric CO2 is obviously positive.

关 键 词：公路运输 大气CO2浓度 变化规律 影响因子 

分 类 号：X831[环境科学与工程—环境工程]