为了探索对煤矿开采过程中产生的粉尘污染进行定量监控与防治的方法,尝试利用地物的高光谱特征快速反演区域粉尘污染范围及其相对程度。以重庆市万盛采矿区为研究区,利用ASD便携式地物光谱仪对该区域被粉尘污染的典型农作物进行高光谱反射率测定,并对植被总体光谱反射率和在1000nm与1200nm附近的光谱小吸收谷的异常进行分析。结果表明,该区域受到的粉尘污染以南桐煤矿南部和砚石台煤矿西南部最为严重,其中受粉尘污染影响最明显的农作物为牛皮菜、莲花白和冬寒菜。通过对比各种受粉尘污染农作物光谱数据,间接得出各区域粉尘污染的相对程度,提供了丰富的农作物光谱实测依据,为进一步的大气粉尘污染遥感定量研究奠定了基础。
Regional dust pollution, resulting from airborne transmission of dust formed by coal mining, endangers the health of the surrounding residents. Therefore, the development of the methods for dust monitoring and controlling is extremely important. In this study, Wansheng, located in the southeast of Chongqing City,was selected as the study area,and ASD Field Pro Ⅲ spectrometer was employed for spectrum collection. A comparative analysis of spectral data was carried out on the basis of the anomalies of the vegetation overall spectral reflectance and small absorption peaks at the wavelength of 1 000 nm and 1 200 nm, and then a relative level of dust pollution was retrieved. The results show that the dust pollution in the southern part of the Nantong coal mine and the southwestern part of the Yanshitai coal mine in Wansheng district is the most serious. The crops impacted by dust mainly include leaf beet, cabbages and Chinese mallow. The results obtained by the authors provide fundamental basis for further researches on dust pollution based on quantitative remote sensing.