论文部分内容阅读
通过野外采样和室内测定,研究了湖南省主要类型土壤反射光谱的剖面变化特性。结果表明,同一土壤剖面中不同土层的反射光谱曲线形态基本上是一致的;经统计分析得出,在每个自然土壤剖面中,各土层420nm处的的光谱反射率均与土壤游离氧化铁含量之间存在着线性负相关性,620-660nm波段的平均光谱反射率与土壤有机质含量呈幂函数负相关性。
Through the field sampling and indoor determination, the profile variation characteristics of the main types of soil reflectance spectra in Hunan Province were studied. The results show that the reflectance spectra of different soil layers are basically the same in the same soil profile. The statistical analysis shows that the spectral reflectance at 420nm of each soil layer is the same as that of soil free oxidation There is a linear negative correlation between iron content. The average spectral reflectance in 620-660 nm band has a negative power function correlation with soil organic matter content.