Precipitation dynamics in forests and deforestation areas during the dry season in the Central-Eastern Amazon: a case study in the Xingu basin

Autores

DOI:

https://doi.org/10.55761/abclima.v37i21.18918

Palavras-chave:

Climate change; Deforestation; Cloud Computing; Sen’s Slope; Trends.

Resumo

The precipitation regimen in the Xingu watershed is an important aspect of the Amazon regional climate. In this paper, we analyze trends and extreme precipitation events in forested and deforested areas for the Xingu watershed, eastern Amazon. The estimated data was validated using rain gauges and statistical methods were applied to evaluate trends in precipitation patterns and spatialize the Sen's slope to provide insights for water resources management in the region for the dry season. The analysis employs Point-Biserial correlation tests to assess the association between binary forest cover (1 for forest, 0 for deforested) and various precipitation indexes. All stations with significant Mann-Kendall test showed decreasing precipitation, and the largest precipitation reduction trend found was -0.43 mm per month for station 151003. The results of the RPB correlation suggest that forest cover is more strongly associated with the persistence and intensity of wet periods than with isolated extreme precipitation events, shedding light on the interaction between precipitation patterns and forest dynamics.

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Biografia do Autor

Rodrigo Martins Moreira, Universidade Federal de Rondônia (UNIR)

Professor Adjunto do Departamento de Engenharia Ambiental da Universidade Federal de Rondônia - Campus de Ji-Paraná, fomentando o ensino público de qualidade e popularização da ciência. Coordenador do Laboratório de Geomática e Estatística (LABGET - UNIR) e líder do Grupo de Pesquisa em Engenharia Ambiental (GPEA-UNIR). Sou um cientista de dados que transforma produtos de sensoriamento remoto multissensores (ópticos e radar) e dados censitários em informações espaciais para responder a problemas ambientais complexos relacionados às ciências do clima, fragmentação florestal, recursos hídricos e saúde pública. Pós-Doutorado na San Diego State University - EUA (2023). Pós-Doutorado em Recursos Naturais - UFMS (2020). Doutorado em Ciências da Engenharia Ambiental - EESC/USP (2017) com período sanduíche na University of Michigan - EUA. Mestre em Ciências Agrárias (2014), Sanitarista Ambiental (2011) e Gestor Ambiental (2013) pelo IFGoiano - Campus Rio Verde. Domínio sobre Google Earth Engine, R e Python para análises de dados espaciais.

Bruno César dos Santos, Universidade Federal de São Carlos

Graduação em Geografia (Licenciatura) pela Universidade Federal de Alfenas-MG (UNIFAL-MG). Mestre e Doutor em Ciências da Engenharia Ambiental pela Universidade de São Paulo (USP). Pós-doutorado em andamento no Departamento de Ciências Ambientais (DCAm) da Universidade Federal de São Carlos (UFSCar). Realizo pesquisas nas áreas de Climatologia e Geotecnologias aplicadas ao meio ambiente. Tenho experiência como professor na área de educação em Geografia nos níveis fundamental e médio.

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Publicado

03-07-2025

Como Citar

Martins Moreira, R., & Santos, B. C. dos. (2025). Precipitation dynamics in forests and deforestation areas during the dry season in the Central-Eastern Amazon: a case study in the Xingu basin. Revista Brasileira De Climatologia, 37(21), 48–67. https://doi.org/10.55761/abclima.v37i21.18918

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