Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program
Abstract. The forthcoming European Space Agency’s Sentinel-2 mission promises to provide high (10 m) resolution optical data at higher temporal frequencies (5 day revisit with two operational satellites) than previously available. CNES, the French national space agency, launched a program in 2013, ‘...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
Copernicus GmbH
2015
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/94630 |
| _version_ | 1855514136173084672 |
|---|---|
| author | Hojas-Gascon, L. Belward, A. Eva, H. Ceccherini, G. Hagolle, Olivier García, J. Cerutti, P.O. |
| author_browse | Belward, A. Ceccherini, G. Cerutti, P.O. Eva, H. García, J. Hagolle, Olivier Hojas-Gascon, L. |
| author_facet | Hojas-Gascon, L. Belward, A. Eva, H. Ceccherini, G. Hagolle, Olivier García, J. Cerutti, P.O. |
| author_sort | Hojas-Gascon, L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Abstract. The forthcoming European Space Agency’s Sentinel-2 mission promises to provide high (10 m) resolution optical data at higher temporal frequencies (5 day revisit with two operational satellites) than previously available. CNES, the French national space agency, launched a program in 2013, ‘SPOT4 take 5’, to simulate such a dataflow using the SPOT HRV sensor, which has similar spectral characteristics to the Sentinel sensor, but lower (20m) spatial resolution. Such data flow enables the analysis of the satellite images using temporal analysis, an approach previously restricted to lower spatial resolution sensors. We acquired 23 such images over Tanzania for the period from February to June 2013. The data were analysed with aim of discriminating between different forest cover percentages for landscape units of 0.5 ha over a site characterised by deciduous intact and degraded forests. The SPOT data were processed by one extracting temporal vegetation indices. We assessed the impact of the high acquisition rate with respect to the current rate of one image every 16 days. Validation data, giving the percentage of forest canopy cover in each land unit were provided by very high resolution satellite data. Results show that using the full temporal series it is possible to discriminate between forest units with differences of more than 40% tree cover or more. Classification errors fell exclusively into the adjacent forest canopy cover class of 20% or less. The analyses show that forestation mapping and degradation monitoring will be substantially improved with the Sentinel-2 program. |
| format | Conference Paper |
| id | CGSpace94630 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Copernicus GmbH |
| publisherStr | Copernicus GmbH |
| record_format | dspace |
| spelling | CGSpace946302025-06-17T08:23:12Z Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program Hojas-Gascon, L. Belward, A. Eva, H. Ceccherini, G. Hagolle, Olivier García, J. Cerutti, P.O. forest cover degradation tropical forests dry forests Abstract. The forthcoming European Space Agency’s Sentinel-2 mission promises to provide high (10 m) resolution optical data at higher temporal frequencies (5 day revisit with two operational satellites) than previously available. CNES, the French national space agency, launched a program in 2013, ‘SPOT4 take 5’, to simulate such a dataflow using the SPOT HRV sensor, which has similar spectral characteristics to the Sentinel sensor, but lower (20m) spatial resolution. Such data flow enables the analysis of the satellite images using temporal analysis, an approach previously restricted to lower spatial resolution sensors. We acquired 23 such images over Tanzania for the period from February to June 2013. The data were analysed with aim of discriminating between different forest cover percentages for landscape units of 0.5 ha over a site characterised by deciduous intact and degraded forests. The SPOT data were processed by one extracting temporal vegetation indices. We assessed the impact of the high acquisition rate with respect to the current rate of one image every 16 days. Validation data, giving the percentage of forest canopy cover in each land unit were provided by very high resolution satellite data. Results show that using the full temporal series it is possible to discriminate between forest units with differences of more than 40% tree cover or more. Classification errors fell exclusively into the adjacent forest canopy cover class of 20% or less. The analyses show that forestation mapping and degradation monitoring will be substantially improved with the Sentinel-2 program. 2015 2018-07-03T11:01:32Z 2018-07-03T11:01:32Z Conference Paper https://hdl.handle.net/10568/94630 en Open Access Copernicus GmbH Hojas-Gascon, L., Belward, A., Eva, H., Ceccherini, G., Hagolle, O., Garcia, J., Cerutti, P.O.. 2015. Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XL-7/W3 In G. Schreier, P. E. Skrovseth, and H. Staudenrausch (eds.). 36th International Symposium on Remote Sensing of Environment. 11–15 May 2015, Berlin, Germany : 417-423. The Netherlands: The International Society for Photogrammetry and Remote Sensing. https://doi.org/10.5194/isprsarchives-XL-7-W3-417-2015 |
| spellingShingle | forest cover degradation tropical forests dry forests Hojas-Gascon, L. Belward, A. Eva, H. Ceccherini, G. Hagolle, Olivier García, J. Cerutti, P.O. Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title | Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title_full | Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title_fullStr | Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title_full_unstemmed | Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title_short | Potential improvement for forest cover and forest degradation mapping with the forthcoming Sentinel-2 program |
| title_sort | potential improvement for forest cover and forest degradation mapping with the forthcoming sentinel 2 program |
| topic | forest cover degradation tropical forests dry forests |
| url | https://hdl.handle.net/10568/94630 |
| work_keys_str_mv | AT hojasgasconl potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT belwarda potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT evah potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT ceccherinig potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT hagolleolivier potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT garciaj potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program AT ceruttipo potentialimprovementforforestcoverandforestdegradationmappingwiththeforthcomingsentinel2program |