ASSESSMENT OF THE IMPACT OF CHANGES IN LAND USE AND LAND COVER ON SURFACE RUNOFF

Autores/as

DOI:

https://doi.org/10.4215/rm2024.e23012

Resumen

El objetivo de este estudio fue analizar el comportamiento del escurrimiento superficial como resultado de los cambios en el uso y cobertura del suelo (LULC), utilizando la cuenca del Río Novo (Brasil) como sitio de análisis. Para estimar el escurrimiento superficial, se utilizó el método del número de curva (NRCS-CN); como datos de entrada, se utilizaron las clasificaciones de LULC proporcionadas por el proyecto MapBiomas y el mapa pedológico del estado de São Paulo (1:250.000). La cuenca del Río Novo fue dividida en diez subcuencas. Los resultados mostraron cambios importantes en LULC entre 1992 y 2022, con una reducción en las áreas de pastizales y un aumento en los cultivos anuales y los campos de caña de azúcar, así como en las áreas urbanas. Tales alteraciones son factores condicionantes de cambios en los valores del Número de Curva (CN), lo que implica cambios en los valores de escurrimiento superficial. Para una precipitación de 130 mm (aproximadamente un período de retorno de 10 años), los valores de la profundidad de escurrimiento superficial variaron desde 3.21 mm (áreas con cobertura forestal en suelos del grupo hidrológico A) hasta 101.35 mm (para áreas urbanas en suelos del grupo hidrológico C). El proceso de urbanización que ocurrió en las subcuencas 1, 6 y 9 llevó a un aumento en las áreas con los valores más altos de CN (CN igual a 85 y 90). Los lugares con valores de escurrimiento superficial aumentados deben considerarse como áreas críticas, donde pueden ocurrir pérdidas de suelo y agua, comprometiendo así la seguridad hídrica en la cuenca.


Palabras-clave: Método NRCS-CN, Sistema de Información Geográfica, Gestión de Recursos Hídricos, MapBiomas

Biografía del autor/a

  • Donizeti Aparecido Pastori Nicolete, São Paulo State University, Botucatu (SP), Brazil.

    PhD in Agronomy (Irrigation and Drainage) from the São Paulo State University Júlio de Mesquita Filho (2015 and 2019). He has experience in the area of ​​Forest Resources and Forest Engineering, with an emphasis on Geoprocessing.

  • Edson Luís Piroli, São Paulo State University, Botucatu (SP), Brazil.

    PhD in Agronomy in the Area of ​​Concentration in Energy in Agriculture, in the Research Line Land Use Planning, Environmental Studies and Sustainable Development, from UNESP. Full Professor in Remote Sensing and Geoprocessing from UNESP. Associate Professor at the Universidade Estadual Paulista Júlio de Mesquita Filho, in the undergraduate course in Geography, at the Ourinhos Campus and in the Postgraduate Program in Geography of the Faculty of Science and Technology of UNESP in Presidente Prudente. Productivity Scholarship/CNPq. He was a member of REDISIG (Red Iberoamericana de Sistemas de Información Geográfica), which brings together researchers from Argentina, Brazil, Chile, Costa Rica, Ecuador, Spain, Mexico and Puerto Rico. He has published dozens of articles in specialized journals and several scientific papers in event proceedings. He has several items of technical production. He participates in/or participates in events in Brazil and abroad. He has supervised over 200 undergraduate, postgraduate, specialization, master's and doctoral projects in the areas of remote sensing, geoprocessing, watershed management, forest resources, tourism and environmental management. He supervises PIBIC students in high school, undergraduate, specialization, master's, doctoral and post-doctoral programs. He has received 11 awards and/or honors. He has participated in over 200 final year project committees at different academic levels. He has published books and book chapters. He has participated in dozens of judging committees. He works in the areas of integrated management, planning and environmental management, watersheds and micro-basins and permanent preservation areas (APP), with an emphasis on the application of Remote Sensing as a data source and Geoprocessing as an analysis technique. He was coordinator of the Tourism course - Emphasis on Environment and Executive Vice Coordinator of the Experimental Campus of UNESP in Rosana between July 2007 and December 2008. He was Executive Vice Coordinator of the Experimental Campus of UNESP in Ourinhos with a term between March 2013 and March 2017. He was Executive Coordinator of this UNESP Campus from March 2013 to March 2021. In 2015 he was the Associate President of the UNESP Vice-Directors Forum and in 2016, president of this Forum. In his professional activities he interacted with more than three hundred collaborators in co-authorship of scientific papers and related activities. He participated in a thematic project and a public policy project funded by FAPESP. He coordinated the Regular Project "Analysis of land use in permanent preservation areas of the Pardo River using geoprocessing, and assessment of the impacts of this use on the natural resources of these areas", also funded by FAPESP, in addition to supervising several Scientific Initiation projects with scholarships granted by FAPESP and CNPq. He coordinated the MES/Cuba project funded by CAPES that involved four Cuban and Brazilian researchers and four sandwich doctorates of students from both countries. He coordinated the project Changes in land use in hydrographic microbasins and impacts on natural resources and the human population, funded by FAPESP. He is the leader of the Water Security Research Group and a member of the Brazilian Center for UAVs for Aerial Surveys - NUBRAVA. He is the Coordinator of the Thematic Network for Extension in Waters (ReTEA) and Coordinator of the Working Group of Higher Education Institutions of CBH/Paranapanema. 

Publicado

2024-08-07

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