Extracting soil‐independent spectral components for estimating oat residue covers
| Autor: | M.D. Ransom, E. T. Kanemasu, Haiping Su, Shie-Shien Yang, M. Duane Nellis |
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| Rok vydání: | 1995 |
| Předmět: |
Residue (complex analysis)
Crop residue Component (thermodynamics) Geography Planning and Development Soil component food and beverages Interaction model Soil surface complex mixtures Agronomy Principal component analysis otorhinolaryngologic diseases Independent data Biological system Water Science and Technology Mathematics |
| Zdroj: | Geocarto International. 10:61-67 |
| ISSN: | 1752-0762 1010-6049 |
| DOI: | 10.1080/10106049509354512 |
| Popis: | Reflectance of radiation from the soil surface contains information on the surface residue and the soil. A factor analysis procedure was performed to separate the soil component and the oat residue component that is independent of soil. The extracted oat residue component was related to amounts of oat residue covers, using a spectral interaction model with a first order solution. An empirical model was developed from reflectance measurements of known coverage of oat residue with different soil backgrounds and tested using an independent data set taken from agricultural fields. These results suggest that the extracted oat residue component was useful for estimating crop residues from reflectance measurements. Selection of a sensitive wavelength from the wavebands measured by MMR and Exotech was performed using a principal components analysis. MMR band 5 and Exotech band 4 were the two most important wavebands in the factor analysis procedure. |
| Databáze: | OpenAIRE |
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