兰州市道路交通噪声的年际变化和区域比较

道路交通噪声是城市噪声环境中对人们生活干扰最大的噪声源，也是环境工作者研究的主要课题之一。分析了兰州市15年来的交通量及噪声的变化情况，发现兰州市总体车流量增长快，但道路交通噪声污染各年变化不大，并把安宁、西固、城关、七里河4个区的交通噪声污染状况作了比较，总结了4个区的噪声污染特点。

Interannual Variation and Regional Comparison of Urban Road Traffic Noise in Lanzhou City

Road traffic noise is the most principal urban noisy source of bothering people,and it is also one of the important project for environmental protecters to study.In the paper the authors analyse the variation of traffic and traffic noise of the past 15 years in Lanzhou city and conclude that the traffic in Lanzhou mount up rapidly but the traffic noise does not increase accordingly.Furthermore,the authors make a comparison of road traffic norse pollution at different districts including Anning,Xigu,Chengguan and Qilihe,the characteristics of noise pollution at the above four districts are also summarized.