Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil
The purpose of this study was to test the feasibility of applying AVIRIS sensor (Airborne Visible/InfraRed Imaging Spectrometer) for mapping and quantifying mineralogical components of three Brazilian soils, a reddish Oxisol in São João D'Aliança area (SJA) and a dark reddish brown Oxisol and U...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Applied and Environmental Soil Science |
| Online Access: | http://dx.doi.org/10.1155/2011/641328 |
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| author | Gustavo M. M. Baptista Rodrigo S. Corrêa Perseu F. dos Santos José S. Madeira Netto Paulo R. Meneses |
| author_facet | Gustavo M. M. Baptista Rodrigo S. Corrêa Perseu F. dos Santos José S. Madeira Netto Paulo R. Meneses |
| author_sort | Gustavo M. M. Baptista |
| collection | DOAJ |
| description | The purpose of this study was to test the feasibility of applying AVIRIS sensor (Airborne Visible/InfraRed Imaging Spectrometer) for mapping and quantifying mineralogical components of three Brazilian soils, a reddish Oxisol in São João D'Aliança area (SJA) and a dark reddish brown Oxisol and Ultisol in Niquelândia (NIQ) counties, Goiás State. The study applied the spectral index RCGb [kaolinite/(kaolinite + gibbsite) ratio] and was based on spectral absorption features of these two minerals.The RCGb index was developed for the evaluation of weathering degrees of various Brazilian soils and was validated by the analysis of soil samples spectra imaged by AVIRIS and checked against laboratory mineralogical quantification (TGA:Thermal Gravimetric Analysis). Results showed to be possible mapping and quantifying the weathering degree of the studied soils and that the two selected areas presented different weathering degrees of their soils even for a same soil type. |
| format | Article |
| id | doaj-art-c173feea789545549b167c6a67d4e2d7 |
| institution | Kabale University |
| issn | 1687-7667 1687-7675 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied and Environmental Soil Science |
| spelling | doaj-art-c173feea789545549b167c6a67d4e2d72025-02-03T01:11:30ZengWileyApplied and Environmental Soil Science1687-76671687-76752011-01-01201110.1155/2011/641328641328Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central BrazilGustavo M. M. Baptista0Rodrigo S. Corrêa1Perseu F. dos Santos2José S. Madeira Netto3Paulo R. Meneses4Geosciences Institute, University of Brasilia, 70910-900 Brasilia, DF, BrazilDepartment of Ecology, University of Brasilia, 70910-900 Brasilia, DF, BrazilEnvironmental Planning and Management Program, Catholic University of Brasilia, 72030-170 Brasilia, DF, BrazilBrazilian Agricultural Research Corporation, Embrapa 70770-901 Brasilia, DF, BrazilGeosciences Institute, University of Brasilia, 70910-900 Brasilia, DF, BrazilThe purpose of this study was to test the feasibility of applying AVIRIS sensor (Airborne Visible/InfraRed Imaging Spectrometer) for mapping and quantifying mineralogical components of three Brazilian soils, a reddish Oxisol in São João D'Aliança area (SJA) and a dark reddish brown Oxisol and Ultisol in Niquelândia (NIQ) counties, Goiás State. The study applied the spectral index RCGb [kaolinite/(kaolinite + gibbsite) ratio] and was based on spectral absorption features of these two minerals.The RCGb index was developed for the evaluation of weathering degrees of various Brazilian soils and was validated by the analysis of soil samples spectra imaged by AVIRIS and checked against laboratory mineralogical quantification (TGA:Thermal Gravimetric Analysis). Results showed to be possible mapping and quantifying the weathering degree of the studied soils and that the two selected areas presented different weathering degrees of their soils even for a same soil type.http://dx.doi.org/10.1155/2011/641328 |
| spellingShingle | Gustavo M. M. Baptista Rodrigo S. Corrêa Perseu F. dos Santos José S. Madeira Netto Paulo R. Meneses Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil Applied and Environmental Soil Science |
| title | Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil |
| title_full | Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil |
| title_fullStr | Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil |
| title_full_unstemmed | Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil |
| title_short | Use of Imaging Spectroscopy for Mapping and Quantifying the Weathering Degree of Tropical Soils in Central Brazil |
| title_sort | use of imaging spectroscopy for mapping and quantifying the weathering degree of tropical soils in central brazil |
| url | http://dx.doi.org/10.1155/2011/641328 |
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