Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms
Remote sensing offers a way to map crop types across large spatio-temporal scales at low costs. However, mapping crop types is challenging in heterogeneous, smallholder farming systems, such as those in India, where field sizes are often smaller than the resolution of historically available imagery....
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2021
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164277 |
| _version_ | 1855529235370737664 |
|---|---|
| author | Rao, Preeti Zhou, Weiqi Bhattarai, Nishan Srivastava, Amit K. Singh, Balwinder Poonia, Shishpal Lobell, David B. Jain, Meha |
| author_browse | Bhattarai, Nishan Jain, Meha Lobell, David B. Poonia, Shishpal Rao, Preeti Singh, Balwinder Srivastava, Amit K. Zhou, Weiqi |
| author_facet | Rao, Preeti Zhou, Weiqi Bhattarai, Nishan Srivastava, Amit K. Singh, Balwinder Poonia, Shishpal Lobell, David B. Jain, Meha |
| author_sort | Rao, Preeti |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Remote sensing offers a way to map crop types across large spatio-temporal scales at low costs. However, mapping crop types is challenging in heterogeneous, smallholder farming systems, such as those in India, where field sizes are often smaller than the resolution of historically available imagery. In this study, we examined the potential of relatively new, high-resolution imagery (Sentinel-1, Sentinel-2, and PlanetScope) to identify four major crop types (maize, mustard, tobacco, and wheat) in eastern India using support vector machine (SVM). We found that a trained SVM model that included all three sensors led to the highest classification accuracy (85%), and the inclusion of Planet data was particularly helpful for classifying crop types for the smallest farms (<600 m2). This was likely because its higher spatial resolution (3 m) could better account for field-level variations in smallholder systems. We also examined the impact of image timing on the classification accuracy, and we found that early-season images did little to improve our models. Overall, we found that readily available Sentinel-1, Sentinel-2, and Planet imagery were able to map crop types at the field-scale with high accuracy in Indian smallholder systems. The findings from this study have important implications for the identification of the most effective ways to map crop types in smallholder systems. |
| format | Journal Article |
| id | CGSpace164277 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1642772024-12-22T05:44:55Z Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms Rao, Preeti Zhou, Weiqi Bhattarai, Nishan Srivastava, Amit K. Singh, Balwinder Poonia, Shishpal Lobell, David B. Jain, Meha remote sensing climatic factors land use cost benefit analysis satellite imagery Remote sensing offers a way to map crop types across large spatio-temporal scales at low costs. However, mapping crop types is challenging in heterogeneous, smallholder farming systems, such as those in India, where field sizes are often smaller than the resolution of historically available imagery. In this study, we examined the potential of relatively new, high-resolution imagery (Sentinel-1, Sentinel-2, and PlanetScope) to identify four major crop types (maize, mustard, tobacco, and wheat) in eastern India using support vector machine (SVM). We found that a trained SVM model that included all three sensors led to the highest classification accuracy (85%), and the inclusion of Planet data was particularly helpful for classifying crop types for the smallest farms (<600 m2). This was likely because its higher spatial resolution (3 m) could better account for field-level variations in smallholder systems. We also examined the impact of image timing on the classification accuracy, and we found that early-season images did little to improve our models. Overall, we found that readily available Sentinel-1, Sentinel-2, and Planet imagery were able to map crop types at the field-scale with high accuracy in Indian smallholder systems. The findings from this study have important implications for the identification of the most effective ways to map crop types in smallholder systems. 2021-05-11 2024-12-19T12:53:42Z 2024-12-19T12:53:42Z Journal Article https://hdl.handle.net/10568/164277 en Open Access MDPI Rao, Preeti; Zhou, Weiqi; Bhattarai, Nishan; Srivastava, Amit K.; Singh, Balwinder; Poonia, Shishpal; Lobell, David B. and Jain, Meha. 2021. Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms. Remote Sensing, Volume 13 no. 10 p. 1870 |
| spellingShingle | remote sensing climatic factors land use cost benefit analysis satellite imagery Rao, Preeti Zhou, Weiqi Bhattarai, Nishan Srivastava, Amit K. Singh, Balwinder Poonia, Shishpal Lobell, David B. Jain, Meha Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title | Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title_full | Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title_fullStr | Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title_full_unstemmed | Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title_short | Using Sentinel-1, Sentinel-2, and planet imagery to map crop type of smallholder farms |
| title_sort | using sentinel 1 sentinel 2 and planet imagery to map crop type of smallholder farms |
| topic | remote sensing climatic factors land use cost benefit analysis satellite imagery |
| url | https://hdl.handle.net/10568/164277 |
| work_keys_str_mv | AT raopreeti usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT zhouweiqi usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT bhattarainishan usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT srivastavaamitk usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT singhbalwinder usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT pooniashishpal usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT lobelldavidb usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms AT jainmeha usingsentinel1sentinel2andplanetimagerytomapcroptypeofsmallholderfarms |