ESPAÑOL
This research proposes a Wetland Index (IB) to identify wetlands, located above 3800 meters above sea level. The IB proposal is a summary of Garcia Dulanto's master thesis (2018) and is based on two methods: the first based on the Linear Spectral Unmixing classication that uses spectral signatu...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | Perú |
| Institución: | Universidad Nacional Mayor de San Marcos |
| Repositorio: | Revistas - Universidad Nacional Mayor de San Marcos |
| Idioma: | español |
| OAI Identifier: | oai:revistasinvestigacion.unmsm.edu.pe:article/20385 |
| Acceso en línea: | https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20385 |
| Access Level: | acceso abierto |
| Palabra clave: | Bofedal Index Chillon Índice Chillón |
| Sumario: | This research proposes a Wetland Index (IB) to identify wetlands, located above 3800 meters above sea level. The IB proposal is a summary of Garcia Dulanto's master thesis (2018) and is based on two methods: the first based on the Linear Spectral Unmixing classication that uses spectral signatures selected from characteristic elements of the study area. Spectrally ideal signatures (endmember, EM) were selected to represent: wetlands (wetland EM), rocks (rock EM) and bare soil (soil EM). The second method is based on the biophysical indices or parameters NDVI, NDWI and NDII. The RGB image combination: NDII, NDVI, NDWI shows the wetlands in the study area in yellow tones. The two methods are integrated using Pearson's correlation between the fraction of the endmember-bofedal and those of the bofedales. Maximum and minimum correlation is obtained with the NDWI and NDII indices. With these indices, an index IB = (NDWI - NDII) / (NDWI + NDII) is proposed to directly zone the wetlands. The IB was validated by means of the high resolution images of the Google Earth Pro software, obtaining a 98.36% accuracy. |
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