Assessment of traffic noise pollution from 1989 to 2003 in Lanzhou City.
Environ Monit Assess
; 123(1-3): 413-30, 2006 Dec.
Article
em En
| MEDLINE
| ID: mdl-17036256
ABSTRACT
On the basis of the continuous traffic noise data observed at 142 sites distributed in 52 roads from 1989 to 2003, the characteristics of traffic noise and effect factors were analyzed through traffic noise indices, such as Lep, L10, L50, L90, TNI, and Pn. Our findings allow us to reach a number of conclusions as follows Firstly, traffic noise pollution was serious, and its fluctuant characteristic was obvious, resulting in a great intrusion to public in Lanzhou City during last 15 years. Secondly, traffic noise made a distinction between trunk lines and secondary lines, west-east direction roads and north-south direction roads. Thirdly, spatial character and time rule of traffic noise were obvious. In addition, traffic volume, traffic composition, road condition, and traffic management were identified as the key factors influencing traffic noise in this city.
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Base de dados:
MEDLINE
Assunto principal:
Exposição Ambiental
/
Ruído dos Transportes
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article