EVALUACIÓN DEL IMPACTO DE LOS CAMBIOS EN EL USO Y COBERTURA DE LA TIERRA EN EL ESCURRIMIENTO SUPERFICIAL

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DOI:

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

Abstract

The aim of this study was to analyze the behavior of surface runoff as a result of changes in land use and land cover (LULC), using the Rio Novo basin (Brazil) as the analysis site. To estimate surface runoff, the curve number (NRCS-CN) method was used; as input data, the LULC classifications provided by the MapBiomas project and the pedological map of the state of São Paulo (1:250,000) were used. The Rio Novo basin was discretized into ten sub-basins. The results showed major changes in LULC between 1992 and 2022, with a reduction in pasture areas and an increase in annual crops and sugarcane fields, as well as in urban areas. Such alterations are conditioning factors of changes in Curve Number (CN) values, which imply changes in surface runoff values. For a rainfall of 130 mm (roughly 10-year return period), the surface runoff depth values ranged from 3.21 mm (areas with forest cover on soils in hydrological group A) to 101.35 mm (for urban areas on soils in hydrological group C). The urbanization process that occurred in sub-basins 1, 6, and 9 led to an increase in areas with the highest CN values (CN equal to 85 and 90). Locations with increased surface runoff values should be considered as critical areas, where soil and water losses may occur, thereby compromising water security in the basin. Keywords: NRSC-CN method, Geographic Information System, Water Resources Management, MapBiomas. 

Keywords: NRSC-CN method, Geographic Information System, Water Resources Management, MapBiomas

 

 

 

Author Biographies

  • 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. 

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Published

2024-08-07

Issue

Vol. 23 (2024)

Section

Artigos

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