Title:	Evapotranspiration measurements in pasture, crops, and native Brazilian Cerrado based on UAV-borne multispectral sensor.
Authors:	LIMA, G. S. A. de FERREIRA, M. E. SALES, J. C. PASSOS, O. de S. MAGGIOTTO, S. R. MADARI, B. E. CARVALHO, M. T. de M. MACHADO, P. L. O. de A.
Affiliation:	GABRIELLA SANTOS ARRUDA DE LIMA, UNIVERSIDADE FEDERAL DE GOIÁS; MANUEL EDUARDO FERREIRA, UNIVERSIDADE FEDERAL DE GOIÁS; JEPHERSON CORREIA SALES, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS; OELSON DE SOUZA PASSOS, UNIVERSIDADE FEDERAL DE GOIÁS; SELMA REGINA MAGGIOTTO, UNIVERSIDADE DE BRASÍLIA; BEATA EMOKE MADARI, CNPAF; MARCIA THAIS DE MELO CARVALHO, CNPAF; PEDRO LUIZ OLIVEIRA DE ALMEIDA MACH, CNPAF.
Date Issued:	2024
Citation:	Environmental Monitoring and Assessment, v. 196, n. 11, article 1105, Nov. 2024.
Description:	In Brazil, agriculture consumes most of the available freshwater, especially in the Cerrado biome, where the rain cycle is marked by long periods of drought. This study, conducted at the Brazilian Agricultural Research Corporation (Embrapa) Research Corporation unit in Santo Antônio de Goiás, Goiás, Brazil, estimated evapotranspiration (ET) in different crops and soil cover. Using multispectral unmanned aerial vehicle (UAV) images, Sentinel satellite data, weather station information, and towers employing the eddy covariance method, we applied the “Simple Algorithm for Evapotranspiration Retrieving” (SAFER) to calculate ET in common bean, pasture, and semideciduous seasonal forest areas. The results showed a good agreement between UAV and satellite data, with R2 = 0.84, also validated with flow towers by the eddy covariance method. UAV-based ET was observed to correspond well to tower (EC) during full vegetative development of beans but is underestimated at the beginning of planting and in the final periods of plant senescence, due to the influence of soil or straw cover. These findings contribute to a better understanding of water dynamics in the system and to enhancing sustainable agricultural practices. This method, adapted for multispectral aerial imaging, can be applied flexibly and on-demand, in different contexts and ground cover. The study highlights the importance of integrated agricultural practices for better management of water resources and preservation of the Cerrado in balance with cultivation areas.
Thesagro:	Evapotranspiração Recurso Hídrico Cerrado Desenvolvimento Sustentável Cobertura do Solo
NAL Thesaurus:	Evapotranspiration Sustainable development Water resources Sensors (equipment) Multispectral imagery
ISSN:	1573-2959
DOI:	https://doi.org/10.1007/s10661-024-13224-7
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPAF)