勐海县城声环境功能区噪声污染状况调查

Investigation of noise pollution status of acoustic environmental function zone in Menghai County

以西双版纳州勐海县作为研究对象,对1,2,3,4类声环境功能区进行布点监测研究,共布设7个功能区监测点位,对噪声现状连续24 h进行监测,共监测2个季度.与此同时,分别在功能区监测点位的东、南、西、北4个方位,距监测点位中心20,40,60,80,100 m处布设点位进行断面监测.用Excel和SPSS统计分析软件对监测数据进行分析,结果表明:噪声污染较为严重的功能区主要发生在1类声环境功能区.从功能区类别来看,噪声达标率3,4类>2类>1类.从监测时间来看,昼间噪声达标率优于夜间.从监测点位来看,噪声超标区域发生在村庄、文教办公区及集贸市场.借助Arcgis软件在用断面监测数据绘制噪声地图的基础上对声污染源进行分析,认为勐海县县城的噪声污染源主要来自交通噪声和生活噪声.

Taking Menghai County of Xishuangbanna as the research object,a study was carried out on the monitoring of four kinds of acoustic environmental functional areas,including 7 functional areas,and the noise status was monitored continuously for 24 hours for 2 quarters.At the same time,the monitoring points were arranged in the east,south,west and north of the functional area,and the cross-section monitoring was carried out at the distance of 20,40,60,80,100 m from the center of the monitoring point.The monitoring data were analyzed by Excel and SPSS statistical analysis software.The results showed that the functional areas with serious noise pollution mainly occur in the functional areas of type 1 acoustic environment.From the functional area category,the noise standard rate of 3 and 4 categories-gt;2 class-gt;1 class.From the point of view of the monitoring time,the standard rate of noise in the daytime was better than that at night.From the point of view of the monitoring points,the areas with excessive noise occurred in villages,cultural and educational office areas and bazaars.Based on the analysis of acoustic pollution sources on the basis of drawing noise maps with cross-sectional monitoring data with the help of Arcgis software,it was concluded that the noise pollution sources in Menghai County were mainly from traffic noise and living noise.