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Analysis of a Landscape Intensely Modified by Agriculture in the Tietê–Jacaré Watershed, Brazil

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journal contribution
posted on 2024-02-08, 14:45 authored by Diego Peruchi Trevisan, Polyanna da Conceição Bispo, Yaqing Gou, Bianca Fogaça de Souza, Veraldo Liesenberg, Angela Harris, Heiko Balzter, Luiz Eduardo Moschini
Anthropogenic actions influence landscapes, and the resulting mosaic is a mix of natural and anthropogenic elements that vary in size, shape, and pattern. Considering this, our study aimed to analyse the land use and land cover changes in the Tietê–Jacaré watershed (São Paulo state, Brazil), using the random forest (RF) algorithm and Sentinel-2 satellite data from 2016 to 2018 to detect landscape changes. By overlapping the environmental data and the proposed model evaluation, it was possible to observe the landscape structure, produce information about the state of this region, and assess the environmental responses to anthropic impacts. The land use and land cover analysis identified eight classes: exposed soil, citriculture, pasture, silviculture, sugar cane, urban area, vegetation, and water. The RF classification for the three years reached high accuracy with a kappa index of 0.87 in 2016, 0.85 in 2017, and 0.85 in 2018. The model developed was essential for the temporal analysis since it allowed us to comprehend the driving forces that act in this landscape and contribute to the discussions about their impacts over time. The results showed a predominance of agricultural activities over the three years, with approximately 900.000 ha (76% of the area), mainly covered by sugarcane cultivation.

History

Author affiliation

Centre for Landscape and Climate Research, School of Geography, Geology and the Environment, University of Leicester

Version

  • VoR (Version of Record)

Published in

Sustainability

Volume

13

Issue

16

Pagination

9304

Publisher

MDPI AG

eissn

2071-1050

Copyright date

2021

Available date

2024-02-07

Language

en