Trend of Noise Change in the Acoustic Environment Functional Areas of Changsha City and Suggested Countermeasures
Based on the monitoring data of sound environment in functional areas of Changsha City between 2021 and 2023,the annual,quarterly,and hourly trends of noise change in functional areas and over-limit time periods and the noise level,compliance rate,and over-limit of Classes 1～4 functional areas were analyzed and the suggestions for noise prevention and control measures were proposed in this paper.The analysis results indicate that the annual average noise level in the functional areas of Changsha City gradually reduces;the quarterly average noise level during the daytime and night is relatively high in the third quarter and relatively low during the daytime in the fourth quarter and during the night in the first and fourth quarters;the hourly average noise level in Changsha City is highest between 8:00 and 10:00,high between 15:00 and 19:00 hours and the lowest between 3:00 and 4:00.For Classes 1,2,3,and 4 functional areas in Changsha City,the daytime noise level meets the standard and the night compliance rate is the lowest.
functional areasacoustic environment qualitytraffic sourcevariation trendprevention and control measures
NETL
NSTL
万方数据
