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Analysis of Susceptibility to Degradation of Water Ecosystem Services as a Tool for Land Use Planning: a Case Study in a Small Brazilian Watershed

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Abstract

Mapping priority areas for environmental conservation and restoration is essential to informing policy formulation and decision-making. This study proposes a methodology based on multicriteria analysis and on-site assessment to develop environmental zoning that enhances the provision of water ecosystem services (WES) from Brazil’s Água Quente River Basin. Integrated analysis of multiple criteria enabled identification of degrees of susceptibility to degradation, assessment of effects of land-use changes between 1990 and 2020, and validation of the study’s methodology via field protocol. The results indicated that the spatial and temporal patterns of WES susceptibility to degradation varied little within the study area with the most critical levels occurring primarily in the Agua Quente’s floodplain, where there are sandy textured soils and coverage with a low degree of soil protection. Zoning analysis designates 40% of the basin`s area as consolidated use, 28% for environmental conservation, 19% as anthropic use, and 13% for environmental restoration. Field analysis indicates that the occurrence of degraded areas and pollution by solid waste and urban effluents are relevant factors that affect the basin’s water resources. Linear regression analysis indicated a good fit between the data modeled by the multicriteria analysis and those observed on-site (R² = 0.6 p < 0.05). The study’s method is effective and its structure can be used in other river basins, as its approach is simple and flexible and can be readily adjusted to fit the characteristics of the study site.

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Acknowledgements

We would like to thank the National Council of Scientific and Technological Development (CNPq) for granting scholarships to the authors, and the Center of Water Resources and Environmental Studies (CRHEA), University of São Paulo, for the structure offered. CCB was supported through an NSF EPSCoR Track 2 RII grant (EPS-2019528).

Author contributions

Conceptualization, Methodology, Formal analysis and investigation, Writing—original draft preparation, Writing—review and editing [PSA]; Conceptualization, Methodology, Formal analysis and investigation, Writing—original draft preparation, Writing—review and editing [LYRBT]; Writing - review and editing [Carolina Cerqueira Barbosa]; Conceptualization, Methodology, Writing—review and editing [NAP]; Conceptualization, Methodology, Writing - review and editing, Supervision [FYH]; Supervision [FFM].

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Correspondence to Phelipe da Silva Anjinho.

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da Silva Anjinho, P., Takaku, L.Y.R.B., Barbosa, C.C. et al. Analysis of Susceptibility to Degradation of Water Ecosystem Services as a Tool for Land Use Planning: a Case Study in a Small Brazilian Watershed. Environmental Management 70, 990–1003 (2022). https://doi.org/10.1007/s00267-022-01710-y

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  • DOI: https://doi.org/10.1007/s00267-022-01710-y

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