Artículo
Estimating maize ground cover using spectral data from Aqua-MODIS in Córdoba, Argentina
de la Casa, Antonio Carlos; Ovando, Gustavo; Ravelo, Andres Carlos
; Abril, Ernesto Guillermo
; Bergamaschi, H.
Fecha de publicación:
02/2014
Editorial:
Taylor & Francis
Revista:
International Journal of Remote Sensing
ISSN:
0143-1161
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Ground cover by foliage is a biophysical property of vegetation linked both to the interception of photosynthetically active radiation and to the crop transpiration rate. The spectral information provided by the Moderate Resolution Imaging Spectroradiometer on board the Aqua (Aqua-MODIS) satellite, which has a spatial resolution of 250 m, is an observation and monitoring resource that may be appropriate for estimating the ground cover of maize when plots exceed 40 ha. In this research, 10 maize plots were monitored in the central region of the province of Córdoba, Argentina, during the 2005–2006 growing season, obtaining photographic records of ground cover and soil moisture data. The normalized difference vegetation index (NDVI) of the Aqua-MODIS images showed a significant linear relationship with maize ground cover which, when the complete cycle is taken into account, is sufficient to explain 87% of the variability of ground cover, with an RMSE of 9%, a level of accuracy that increases when the crop is in the vegetative stage and the moisture conditions of the soil are less limiting. Other vegetation indices and linear mixed models were assessed. In addition to using data from the red and near-infrared channels, they incorporate information about soil conditions, but they showed no predictive advantages compared to the NDVI, resulting in simple models that explained between 77% and 87% of the variability of ground cover, with RMSE values of between 9% and 14%.
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Citación
de la Casa, Antonio Carlos; Ovando, Gustavo; Ravelo, Andres Carlos; Abril, Ernesto Guillermo; Bergamaschi, H.; Estimating maize ground cover using spectral data from Aqua-MODIS in Córdoba, Argentina; Taylor & Francis; International Journal of Remote Sensing; 35; 4; 2-2014; 1295-1308
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