Based on the spectral data obtained from laboratory and field experiments in Tengthong spectral test area,the automatic identification and classification of soil types and hand use patterns had been carried out by the use of the principal component analysis.Two principal component equations based on the laboratory data can be used to identify soil types developed from different parent materials and of different land use patterns:Another two principal component equations based on field data can be used to distinguish different land use patterns such as fallow,bare land,wheat field and water etc.
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徐彬彬.应用光谱资料对土壤和土地利用进行数值分类[J].土壤学报,1981,18(2):176-184. Xu Bin-bin. NUMERICAL CLASSIFICATION OF SOILS AND LAND USE BY SPECTRAL DATA[J]. Acta Pedologica Sinica,1981,18(2):176-184.