金剑 ，周显平 ，马凯
（内蒙古科技大学，包头 014010）
关键词：Landsat-8影像；重金属污染土壤；光谱曲线；特征波段；最佳波段组合
中图分类号：TP79 文献标识码：A
摘要：本文以内蒙古自治区白云鄂博矿区的土壤重金属专题信息调查为例，选用Landsat-8遥感影像数据进行适合该专题的最佳波段组合研究。首先在深刻分析研究区内重金属污染土壤的实测光谱曲线特征的基础上，确定重金属污染土壤相对于正常土壤的特征谱带，然后对相对应的特征波段进行分组筛选，最后综合考虑Landsat-8遥感数据波谱特点和数据统计特征，利用最佳指数法确定显示土壤重金属专题信息效果最好的最佳波段组合。经过实地勘测，利用土壤重金属专题特征波段选择出的最佳波段组合突出的专题信息与野外调查的结果一致，能够为环境监测等工作提供可靠依据。
Theanalysis of the optimum band combination based on the image of Landsat-8 —A case study of thematic survey of heavy metals in soils in the mining area ofBayan Obo
JINJian1, LI Qian2,WANG Zhengtong3
(1.Inner Mongolia University of Science and Technology,Baotou 014010, China;2. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083,China;3.China Petroleum Pipeline No.1 ConstructionCompany,Langfang 065000, China)
Keywords: Landsat-8 remote sensing image; heavy metal contaminated soil; spectral curves; Characteristic band;optimumband combination
Abstract:Based on the case of thematic survey ofheavy metals in soil in the mining area of Bayan Obo in Inner MongoliaAutonomous Region, the optimum band combination were studied by analyzing theLandsat-8 remote sensing image data. Firstly, the distinct bands of heavy metalcontaminated soil with respect to normal soil were determined according to theanalysis of the measured spectral curves of heavy metal contaminated soil inthe study area . Then, the corresponding diagnostic bands were grouped andfiltered. Finally, considering the spectral characteristics and statisticsfeature of Landsat-8 remote sensing image data, the best optimum bandcombination was determined which displays the information of heavy metals insoil with OIF. After the investigation of the site, the thematic informationhighlighted by the optimum band combination is consistent with the results ofthe field survey, providing a reliable basis for environmental monitoring andother work.