基于GIS的城市区域噪声空间分析

GIS技术在城市噪声管理中已经得到了广泛的应用,城市噪声监测部门在日常工作中会积累大量的数据资料,噪声地图的发展更是提供了大量的模拟噪声数据。从地学的视角来分析城市环境噪声问题,采用GIS空间分析软件Geoda支持的"箱线图"和"分层设色图"方法,通过分析现有的数据来发现噪声"热点",实施噪声评估,分析区域的环境噪声,还可轻易发现该区的噪声分布特点。这种分析方法将数据与相关的地理环境相对应,噪声数据反应的规律和噪声的空间格局得以直观地展现,分析结果可作为环境噪声研究、环境管理和政策制定的参考,是研究城市环境噪声状况的新途径。

GIS-based regional noise spatial analysis of urban area

Noise monitoring department usually accumulates a great number of data information in daily work.The development of noise mapping also provides abundant simulated or measured noise data.However,these data resources haven't been made a good use.The spatial analysis,as the core of GIS(Geography Information System),is a good tool or approach to better use these data.Spatial analysis is to understand the spatial dependence and spatial association of some data related to geographic locations,and to establish the statistical relation among the data according to the spatial locations.This paper analyzed the noise date distribution of Guangzhou central area by GIS spatial analysis software Geoda.The methods of"box-whisker plot"and"color choropleth map"were used to analyze the environment noise in this area,and it is convenient to identify noise"hotspots"and to assess the quality of urban sound environment.It showed that the spatial analysis could offer some references for urban layout,transportation planning and environmental noise policy making.