金厂沟梁地区土壤含水粘土矿物含量短波红外光谱反演

Inversion of Hydrated Clay Mineral Content in Soil of Jinchanggouliang Area Based on SWIR

基于粘土矿物在短波红外线处产生特征光谱的机理,选出其特征波段,利用矿物组分的实际分析结果和测试数据,采用多元线性回归方法建立模型,对内蒙古金厂沟梁地区的土壤粘土矿物含量进行了反演。研究结果表明:应用特征波段对应的土壤光谱反射率建立预测模型可以用于该地区土壤粘土矿物含量的反演;粘土矿物含量的多少影响光谱反射率的高低。

Based on the physical mechanism that clay mineral can produce characteristic spectrum at shortwave infrared ray （SWIR） , we chose the characteristic wave band of clay mineral, used the actual analysis results and test data of the mineral compo- nents, and adopted multivariate linear regression analysis to build model for inversing the soil clay mineral content of Jinchanggou- liang area of Inner Mongolia. The study results demonstrated that applying soil spectral reflectance which was corresponding with the characteristic wave band to establish forecast model could carry out the inversion of hydrated clay mineral content in the soil of this area. The clay mineral content influenced the discretion of the soil spectral reflectance.