that supply the PMultiescale analysis of changes in rainfall, land use and river levels that supply the Paraíba do Sul river basin – SP, Brazilaraíba do Sul river basin – SP, Brazil

Authors

DOI:

https://doi.org/10.5016/geografia.v51i1.18317

Abstract

The aim of this study is to analyze hydrological trends in the São Paulo portion of the Paraíba do Sul River Basin using rainfall and river level data, and to relate these elevation changes to land use and land cover changes between 1985 and 2020. According to Marengo and Alves (2005), rainfall trends in the Paraíba do Sul River Basin have not changed significantly; however, the flow of the main river segment is decreasing. They suggest that changes in land use and occupation, along with urban growth within the basin, are possible causes. Knowledge gaps remain regarding flow variations in the tributary sub-basins of the main segment, as well as the influence of land use and land cover changes on these variations. Using data from HIDROWEB and MAPBIOMAS, this study contributes to a better understanding of the relationships between precipitation, river level, and land use and land cover. Over the past 60 years, in sub-basins outside the main riverbed, precipitation has shown no significant trend of change. However, river flows have exhibited both positive and negative variations, indicating that there is not always a direct correlation with land use and land cover. One case was identified in which two sub-basins, despite showing a similar absolute increase in forest cover, displayed distinct flow trends.

Author Biographies

Júlio César Pimenta dos Santos, Instituto Nacional de Pesquisas Espaciais (INPE), São José dos Campos, São Paulo, Brasil.

 Bolsista de Mestrado CNPq do Laboratório de Instrumentação de Sistemas Aquáticos (LabISA) - INPE . Graduado em Engenharia Ambiental e Sanitária pela Universidade do Vale do Paraíba - (UNIVAP) 2019 / 2022 - Iniciação Científica Voluntaria, Clima e Meteorologia, (UNIVAP/FEAU) - Orientador: Dr. Eduardo Jorge de Brito Bastos 2021 / 2022 - Bolsista IC FAPESP do Laboratório de Estudos Socioecológicos e Paisagens (LESP) - UNIVAP.

Maria Angélica Toniolo, Universidade do Vale do Paraíba (UNIVAP), São José dos Campos, São Paulo, Brasil.

Atualmente é Coordenadora do PPGPLUR. Possui graduação em Agronomia pela Universidade Federal de Santa Maria (1989), mestrado em Políticas e Desenvolvimento Internacional pela Duke University (1998) e doutorado em Políticas Públicas pela Indiana University (2004). É professora e pesquisadora na Universidade do Vale do Paraíba (UNIVAP) e pesquisadora associada ao Center for the Analysis of Social-Ecological Landscapes (CASEL) da Indiana University. Desde 2015 atua como pesquisadora e professora dos Programas de Mestrado e Doutorado em Planejamento Urbano e Regional (PPGPLUR) da UNIVAP.

Nathan David Vogt, Universidade do Vale do Paraíba (UNIVAP), São José dos Campos, São Paulo, Brasil.

Doctorate Degree (2005) in Environmental Science with a PhD Minor in Human Dimensions of Global Environmental Change (Interdisciplinary, Global Change Science that emerged in the late 1980s). I am currently the director of the Laboratory of the Studies of Social-Ecological Landscapes (LESP) within the Urban and Regional Planning Department of the University of the Paraíba Valley. i am also an associated researcher of the Center for the Assessment of Social-Ecological Landscapes (CASEL) at Indiana University. My research interests include how local populations adapt their resource use and management strategies in response to global changes (e.g., markets, land tenure regularization, climate change) and how these are expressed in their landscapes and well-being.

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Published

2026-03-20

How to Cite

SANTOS, Júlio César Pimenta dos; TONIOLO, Maria Angélica; VOGT, Nathan David. that supply the PMultiescale analysis of changes in rainfall, land use and river levels that supply the Paraíba do Sul river basin – SP, Brazilaraíba do Sul river basin – SP, Brazil. GEOGRAFIA, [S. l.], v. 51, n. 1, p. e-18317, 2026. DOI: 10.5016/geografia.v51i1.18317. Disponível em: https://www.periodicos.rc.biblioteca.unesp.br/index.php/ageteo/article/view/18317. Acesso em: 22 mar. 2026.

Issue

Vol. 51 No. 1 (2026)

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Article

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