Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping
Landscape mapping has the potential to address some of the most pressing research issues of our time, including climate change, sustainable development, and human well-being. In this paper, we propose an original method that lays the foundations for landscape mapping and overcomes some of the major...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-03-01
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| Series: | Geo-spatial Information Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/10095020.2024.2314558 |
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| author | Louise Lemettais Samuel Alleaume Sandra Luque Anne-Élisabeth Laques Yonas Alim Laurent Demagistri Agnès Bégué |
| author_facet | Louise Lemettais Samuel Alleaume Sandra Luque Anne-Élisabeth Laques Yonas Alim Laurent Demagistri Agnès Bégué |
| author_sort | Louise Lemettais |
| collection | DOAJ |
| description | Landscape mapping has the potential to address some of the most pressing research issues of our time, including climate change, sustainable development, and human well-being. In this paper, we propose an original method that lays the foundations for landscape mapping and overcomes some of the major limitations of existing biophysical methods. Based on the assumption that the primary components of the landscape can be extracted directly from the radiometric information of satellite image time series, this paper presents a new approach to landscape characterization and mapping based solely on remote sensing data. The approach relies on a conceptual model, which links the description, characteristics, structure and functions of the landscape to a set of Remote Sensing-based Essential Landscape Variables (RS-ELVs). The RS-ELVs are then processed according to geographic object-based image analysis (GEOBIA) approach to produce a radiometric landscape map. The model and the remote sensing data processing chain are tested on a case study in central Madagascar (about 13 000 km2) composed of contrasting landscapes resulting from different climatic conditions and agricultural practices. The RS-ELVs are extracted from MODIS image time series for the temporal and spectral variables, and from MODIS and Sentinel-2 images for the texture variables. The parameterization of the segmentation and clustering algorithms is determined by statistical optimization. The final result is a radiometric landscape map in six classes. The landscape classes are then characterized using an independent set of remote sensing variables, a global land cover map and ground observations. The approach successfully identifies and delineates the gradient and major landscape types of the complex region of central Madagascar, confirming our initial hypothesis. The production of such radiometric landscape maps opens the way for integrated territorial development, including the planning and protection of the living environment and human well-being, and the implementation of sectoral policies. |
| format | Article |
| id | doaj-art-c70c876254f348b7b10db79d88ebe908 |
| institution | Kabale University |
| issn | 1009-5020 1993-5153 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geo-spatial Information Science |
| spelling | doaj-art-c70c876254f348b7b10db79d88ebe9082025-08-20T03:26:52ZengTaylor & Francis GroupGeo-spatial Information Science1009-50201993-51532025-03-0128232234410.1080/10095020.2024.2314558Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mappingLouise Lemettais0Samuel Alleaume1Sandra Luque2Anne-Élisabeth Laques3Yonas Alim4Laurent Demagistri5Agnès Bégué6UMR ESPACE-DEV, Univ Montpellier, IRD, Univ Antilles, Univ Guyane, Univ Réunion, Montpellier, FranceINRAE, UMR TETIS, Montpellier, FranceINRAE, UMR TETIS, Montpellier, FranceUMR ESPACE-DEV, Univ Montpellier, IRD, Univ Antilles, Univ Guyane, Univ Réunion, Montpellier, FranceCIRAD, UMR TETIS, Montpellier, FranceUMR ESPACE-DEV, Univ Montpellier, IRD, Univ Antilles, Univ Guyane, Univ Réunion, Montpellier, FranceCIRAD, UMR TETIS, Montpellier, FranceLandscape mapping has the potential to address some of the most pressing research issues of our time, including climate change, sustainable development, and human well-being. In this paper, we propose an original method that lays the foundations for landscape mapping and overcomes some of the major limitations of existing biophysical methods. Based on the assumption that the primary components of the landscape can be extracted directly from the radiometric information of satellite image time series, this paper presents a new approach to landscape characterization and mapping based solely on remote sensing data. The approach relies on a conceptual model, which links the description, characteristics, structure and functions of the landscape to a set of Remote Sensing-based Essential Landscape Variables (RS-ELVs). The RS-ELVs are then processed according to geographic object-based image analysis (GEOBIA) approach to produce a radiometric landscape map. The model and the remote sensing data processing chain are tested on a case study in central Madagascar (about 13 000 km2) composed of contrasting landscapes resulting from different climatic conditions and agricultural practices. The RS-ELVs are extracted from MODIS image time series for the temporal and spectral variables, and from MODIS and Sentinel-2 images for the texture variables. The parameterization of the segmentation and clustering algorithms is determined by statistical optimization. The final result is a radiometric landscape map in six classes. The landscape classes are then characterized using an independent set of remote sensing variables, a global land cover map and ground observations. The approach successfully identifies and delineates the gradient and major landscape types of the complex region of central Madagascar, confirming our initial hypothesis. The production of such radiometric landscape maps opens the way for integrated territorial development, including the planning and protection of the living environment and human well-being, and the implementation of sectoral policies.https://www.tandfonline.com/doi/10.1080/10095020.2024.2314558Remote sensingMODISSentinel-2essential variablessatellite image time seriesMadagascar |
| spellingShingle | Louise Lemettais Samuel Alleaume Sandra Luque Anne-Élisabeth Laques Yonas Alim Laurent Demagistri Agnès Bégué Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping Geo-spatial Information Science Remote sensing MODIS Sentinel-2 essential variables satellite image time series Madagascar |
| title | Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping |
| title_full | Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping |
| title_fullStr | Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping |
| title_full_unstemmed | Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping |
| title_short | Radiometric landscape: a new conceptual framework and operational approach for landscape characterisation and mapping |
| title_sort | radiometric landscape a new conceptual framework and operational approach for landscape characterisation and mapping |
| topic | Remote sensing MODIS Sentinel-2 essential variables satellite image time series Madagascar |
| url | https://www.tandfonline.com/doi/10.1080/10095020.2024.2314558 |
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