Temporal Analysis of Macrohabitats in the Pantanal via Aerial Photography Processing and Data from Remote Piloted Aircraft Systems
Applications and product generation by orbital remote sensing for the mapping of wetlands due to low temporal and spatial resolution may not yield the expected results, especially in small areas. Thus, this work aimed to use data obtained by a Remotely Piloted Aircraft System and manned aircraft to...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Brasil |
| Institución: | Instituto Chico Mendes de Conservação da Biodiversidade (ICMBIO) |
| Repositorio: | Biodiversidade Brasileira |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.revistaeletronica.icmbio.gov.br:article/759 |
| Acceso en línea: | https://revistaeletronica.icmbio.gov.br/index.php/BioBR/article/view/759 |
| Access Level: | acceso abierto |
| Palabra clave: | RPAS invasão Combretum spp OBIA invasion encroachment |
| Sumario: | Applications and product generation by orbital remote sensing for the mapping of wetlands due to low temporal and spatial resolution may not yield the expected results, especially in small areas. Thus, this work aimed to use data obtained by a Remotely Piloted Aircraft System and manned aircraft to analyze and characterize the landscape changes over 50 years, in a region of the Pantanal of PoconeÌ/MT in detail level, as well as delimit the existing macrohabitats and spatially dimension the advance of Encroaching Species in the study area. For the database used in the study, aerial photographs were obtained with manned aircraft of the American Air Force (USAF), which carried out flights in the Pantanal Region in the years 1965/1966. As a current database, missions were programmed with a Remotely Piloted Aircraft Systems (RPAS), of the fixed wing model ECHAR 20B in August 2015. From the data collection, digital processing and geometric calibrations were performed temporal comparison of data obtained in 1965 (USAF) and 2015 (RPAS). Later, in the eCognition Developer software segmentation and Object-based Image Analysis (OBIA) in both data (USAF and RPAS), classification parameters, algorithms in the software were used as parameters and also the Normalized Difference Vegetation Index adapted to RPAS data. Through the results obtained, it was possible to delimit the existing macrohabitats and to verify the changes in the landscape in the period of 50 years. The specific and structural changes caused by the expansion of shrub / tree species in the area were quantified and qualified, mainly involving Combretum spp. (Pombeiro) and in some places Voshysia divergens (CambaraÌ). The temporal analyzes, the use of OBIA and the advent of sensors coupled in RPAS for aerial surveys, presented excellent results compatible with scales of 1: 1000, providing subsidies that helped to understand the dynamics of the areas in the Pantanal and its macrohabitats, besides allowing advances in the geotechnical frontier for the development of new studies considering the standards in terms of spatial and temporal resolution. |
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