| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m16b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Repository | cptec.inpe.br/adm_conf/2005/10.31.23.42 | |||
| Last Update | 2006:04.15.16.22.44 (UTC) administrator | |||
| Metadata Repository | cptec.inpe.br/adm_conf/2005/10.31.23.42.37 | |||
| Metadata Last Update | 2022:03.26.18.01.23 (UTC) administrator | |||
| Secondary Key | INPE-13827-PRE/9013 | |||
| Citation Key | BecerraAlva:2006:DeTrSa | |||
| Title | Detection of tropical Savannah (Cerrado) physiognomies in the Legal Amazon by the application of the vegetation and moisture indices with MODIS time series data  | |||
| Format | CD-ROM; On-line. | |||
| Year | 2006 | |||
| Access Date | 2024, May 18 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 283 KiB | |||
| 2. Context | ||||
| Author | 1 Becerra, Jorge Alberto Bustamante 2 Alvalá, Regina Célia dos Santos | |||
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JJ59 | |||
| Group | 1 2 DMA-INPE-MCT-BR | |||
| Affiliation | 1 2 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 jabb@cptec.inpe.br 2 regina@cptec.inpe.br | |||
| Editor | Vera, Carolina Nobre, Carlos | |||
| e-Mail Address | jabb@cptec.inpe.br | |||
| Conference Name | International Conference on Southern Hemisphere Meteorology and Oceanography, 8 (ICSHMO). | |||
| Conference Location | Foz do Iguaçu | |||
| Date | 24-28 Apr. 2006 | |||
| Publisher | American Meteorological Society (AMS) | |||
| Publisher City | 45 Beacon Hill Road, Boston, MA, USA | |||
| Pages | 861-867 | |||
| Book Title | Proceedings | |||
| Tertiary Type | Poster | |||
| Organization | American Meteorological Society (AMS) | |||
| History (UTC) | 2005-10-31 23:42:37 :: jabb@cptec.inpe.br -> adm_conf :: 2005-12-16 02:30:44 :: adm_conf -> jabb@cptec.inpe.br :: 2006-03-29 12:07:13 :: jabb@cptec.inpe.br -> administrator :: 2006-04-18 21:19:35 :: administrator -> lise@dpi.inpe.br :: 2010-12-28 12:36:49 :: lise@dpi.inpe.br -> administrator :: 2010-12-29 15:59:05 :: administrator -> lise@dpi.inpe.br :: 2006 2010-12-29 16:06:15 :: lise@dpi.inpe.br -> administrator :: 2006 2010-12-29 18:54:48 :: administrator -> banon :: 2006 2011-01-02 17:15:15 :: banon -> administrator :: 2006 2022-03-26 18:01:23 :: administrator -> :: 2006 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Keywords | Land cover classification Cerrado physiognomies Legal Amazon vegetation and moisture index MODIS image analysis | |||
| Abstract | Deforestation and agricultural expansion are the main anthropogenic factors that determine the land cover changes in the Legal Brazilian Amazon. These changes could alter the dynamic equilibrium between regional climate and vegetation. The mapping of the land cover usually clusters, as a single class, the forested, savanna type and grassland Cerrado physiognomies. This is caused by the difficulty to differentiate these physiognomies among them, due to similar spectral responses. However, the spectral behavior of these land cover classes may be identified when they are analyzed along the annual cycle, including both the dry and the rainy season. To validate this hypothesis the State of Tocantins, which is characterized by presenting extensive savannah areas, was chosen. The main data used were two MODIS Vegetation Indices, the normalized difference vegetation index (NDVI) and the enhanced vegetation index (EVI), both for 16-days composition periods and 250 m resolution, and the near and medium infrared bands. A moisture index, the land surface water index (LSWI), was computed using these bands. To cover the area of the study, a mosaic of two MODIS tiles (h13v09 and h13v10) was used. For the seasonal analysis, four mosaics were used: for the rainy season, from January 01 to 16, 2004, and from March 21 to April 05, 2004, and for the dry season, from July 11 to 26, 2004 and September 29 to October 14, 2004. For each period, 3 mosaics were elaborated, corresponding to NDVI, EVI and LSWI index images, totaling 12 mosaics. The land cover classes were determined through an unsupervised classification technique of the index images. To validate the results of the classification, the Global Land Cover - GLC 2000 map (1 km resolution) was used. Finally, for the determination of the seasonal patterns of each class evaluated, a longitudinal profile was elaborated from a transect that includes the main classes of vegetation cover. The results of the classification show the occurrence of mixtures between classes of land cover: deciduous forest with agriculture, during the rainy season, and agriculture with savannah, during the dry season. They are identified from the profiles of the 3 indices that show similar tendency in the grouping of the land cover classes. Thus, a way to identify the Cerrado physiognomies in the Amazon region could be, first, the separation of the Cerrado class from the other classes using the rainy season data and, thereafter, by the classification of the Cerrado physiognomies, using the dry season data. | |||
| Area | MET | |||
| Type | Impacts of land cover and land use changes | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção até 2016 > DMA > Detection of tropical... | |||
| doc Directory Content | access | |||
| source Directory Content |
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| agreement Directory Content | there are no files | |||
| 4. Conditions of access and use | ||||
| data URL | http://mtc-m16b.sid.inpe.br/ibi/cptec.inpe.br/adm_conf/2005/10.31.23.42 | |||
| zipped data URL | http://mtc-m16b.sid.inpe.br/zip/cptec.inpe.br/adm_conf/2005/10.31.23.42 | |||
| Language | en | |||
| Target File | 861-868.pdf | |||
| User Group | administrator jabb@cptec.inpe.br administrator banon | |||
| Visibility | shown | |||
| Copy Holder | SID/SCD | |||
| Read Permission | allow from all | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46JKC45 | |||
| Citing Item List | sid.inpe.br/bibdigital/2022/03.26.17.47 4 | |||
| Host Collection | cptec.inpe.br/nobre/2005/06.02.21.14 cptec.inpe.br/walmeida/2003/04.25.17.12 | |||
| 6. Notes | ||||
| Mark | 1 | |||
| Empty Fields | archivingpolicy archivist callnumber contenttype copyright creatorhistory descriptionlevel dissemination documentstage doi edition identifier isbn issn label lineage mirrorrepository nextedition notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark url versiontype volume | |||