土壤2017，Vol.49Issue(3)：630-634,5.DOI:10.13758/j.cnki.tr.2017.03.029
基于高光谱的砂姜黑土含水量反演研究
Inversion of Soil Moisture of Shajiang Black Soil by Hyper-spectra
摘要
Abstract
In order to study spectral features of 4 soil species of Shajiang black soil under different water contents, samples were determined by ASD spectrometer in the lab. And the correlation between spectral reflectance and water content was discussed. To improve the accuracy of the model, these models were established with 6 categories of transformations of reflectance using two kinds of methods, such as multiple linear regression and nonlinear regression. The result showed that the correlation coefficient between first derivative differential of reflectance (R′) and water content was the highest and its relationship was negative. At the bands of 712, 807, 1142, 1570, 1850 and 2221 nm , the model established byR′ was the fittest.关键词
砂姜黑土/光谱特征/含水量/光谱反射率Key words
Shajiang black soil/Spectral feature/Water content/Spectrum reflectance分类
农业科技引用本文复制引用
张颖帝,张佳宝,李晓鹏..基于高光谱的砂姜黑土含水量反演研究[J].土壤,2017,49(3):630-634,5.基金项目
国家自然科学基金面上项目(41471182)和中国科学院战略性先导科技专项课题(XDB15030302)资助. （41471182）
