石油污染土壤的偏振反射特性分析

Analysis of Polarimetric Reflection Characteristic for Polluted Soil by Petroleum

分析了土壤石油污染偏振遥感监测机理,并以0号柴油、摩托车机油和97号汽油等三种成品油作为污染源配制成石油污染土壤样品,应用多角度光谱偏振测量仪实测了不同石油污染土壤样品的偏振反射特性数据。结果表明,与清洁土壤相比较,石油污染土壤表现出较为明显的偏振特性,并且偏振特性与观测方位角、光源入射天顶角、观测天顶角、探测波段、污染源类别以及污染程度等影响因素均有关,为土壤石油污染偏振遥感监测的研究与应用提供了一定的科学依据。

The monitoring mechanism of remote sensing for polluted soiI by petroleum was ,analyzed. And then, three kinds of oils, including diesel oil, motorcycle oil and gasoline, were adopted as the polluted sources, and the multi-angle spectral-polarimetric instrument was used to obtain multi-angle spectral-polarimetric ch.aracteristic data of different polluted soil by petroleum. Experimental results showed that, compared to clean soil, polluted soil by petroleum had remarkable polarimetric characteristic, and its polarimetric characteristic was related to different factors, such as observation azimuth, incidence angle of the light source, observation zenith angle, detection waveband, polluted sources as well as degree of pollution by oil were discussed. All the above provided a scientific basis for the research on po-larization remote sensing for polluted soil by petroleum.