English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

PICCIRILLO, Denise Barbosa da Veiga. The impact of land use in the contamination of the superficial waters of public supply by pesticides, 2017. Dissertation (Masters degree Public Health) – Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, 2017. Introduction: The surface waters quality and quantity are directly related to the economic activities present in the river basins and their levels of preservation. The increase in the use of pesticides can contribute to the contamination of soil and water, especially in agricultural watersheds. Preventing the contamination of water sources is essential to guarantee water quality and reduce risks to human health. Therefore, it is necessary to identify how the land use impacts water resources, their quality and their hydrological balance. Objective: Environmental characterization of two watersheds of public supply sources in order to identify vulnerable areas for the contamination of pesticides. Method: Application of the SWAT hydrological model for basin characterization and simulation of the hydrological cycle. Division of watershed in subbasins according to the predominance of the land use. Fieldwork to identify point sources of contamination. Results: The impact of land use and occupation on the water balance of the watersheds was verified. Surface runoff was one of the main means of contamination of water bodies and was related to the presence of vegetation in the area. Areas of greater preservation presented lower surface runoff while those with predominance of agriculture and exposed soil showed higher values. Priority areas for better use of agrochemicals were identified because they present potential for contamination of water bodies. Conclusion: The SWAT model and spatial tools were adequate for the characterization of land use and the results provide subsidies for the improvement of water quality monitoring actions in municipalities.

O impacto do uso do solo na contaminação por agrotóxicos das águas superficiais de abastecimento público