天津市扬尘污染源中高分辨率遥感监测

Urban Dust Pollution Sources Monitoring Based on Medium and High Resolution Satellite Imagery in Tianjin

针对目前城市扬尘污染源以人工实地调查的方式不够系统全面的问题,提出以中分辨率卫星数据与高分辨率卫星数据相结合的方式开展城市扬尘污染源监测。以天津市扬尘源遥感监测为例开展技术方法研究,通过中分辨率卫星数据光谱运算可以很好地进行裸土指数计算,高分辨率卫星数据则可以具体识别扬尘堆场及分布,并综合计算扬尘指数。结果表明,中高分辨率遥感数据可准确全面监测区域扬尘污染源分布,为扬尘源的空间管理与调控提供信息支撑。

At present,the way of dust pollution sources ground investigation in urban areas is not systematic and comprehensive.To solve this problem,the paper carried out dust source remote sensing monitoring research based on the medium-resolution satellite data and high resolution satellite data.Taking Tianjin as an example,the medium-resolution satellite data could be applied to bare soil index calculation,dust pollution sources could be identified in high resolution satellite imageries,and the index of dust could be calculated.The results showed that the urban dust pollution sources distribution can be acquired accurately and comprehensively using medium and high resolution satellite data,and information from remote sensing imagery can provide great help for dust source spatial management and regulation.