高光谱遥感土壤有机质信息提取研究

土壤反射光谱特征分析是反演土壤信息参量的基础资料。本文阐述了使用航空成像光谱仪OMIS- Ⅰ数据并 结合ASD FieldSpec FR(350~2500nm)便携式光谱仪获取野外光谱数据， 对山东省烟台市招远东良乡原状农用土有 机质含量进行反演， 从而实现有机质填图。通过对土壤原反射率对数一阶微分变换并确定其与SOM的相关性， 最 终建立相应的多元线性回归方程。分析认为土壤有机质的测定选用762nm、874nm 及1667nm 波段在本次研究中效 果最佳。该模型也可作为土壤有机质估测和评价的参考。

Extraction of Soil Organic Matter Information by Hyperspectral Remote Sensing

This paper reported research conducted to document the ability of the OMIS-1(400-2500nm) reflectance sensor and the spectrophotometer ASD FieldSpec FR to predict soil organic matter(SOM) of surface soil,and correspondingly to achieve SOM mapping.Data acquired from field survey and hyperspectral airborne sensor were precessed to determine the surface soil characteristic of an agricultural area located in Dongliang village,Zhaoyuan of Shandong province.The method adopted was based on correlation and a forward stepwise multiple linear regression analysis linking SOM content.The results showed that SOM could be well evaluated by the logarithm 1st differential reflectivity using linear regression model.This model would be available for evaluating and predicting soil organic matter by spectral reflectance and would provide guidance for the management of SOM and the prediction of fertility in precision agriculture.