IMPACTO DE RESÍDUOS SÓLIDOS URBANOS NA QUALIDADE QUÍMICA DE SOLOS NO MUNICÍPIO DE CRISTINO CASTRO, PIAUÍ, BRASIL
IMPACTO DE RESÍDUOS SÓLIDOS URBANOS NA QUALIDADE QUÍMICA DE SOLOS NO MUNICÍPIO DE CRISTINO CASTRO, PIAUÍ, BRASIL
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DOI: https://doi.org/10.22533/at.ed.9762517098
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Palavras-chave: qualidade do solo, poluição ambiental, aterro sanitário, coleta seletiva.
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Keywords: soil quality, environmental pollution, sanitary landfill, selective collection.
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Abstract: The growing demand for food is a determining factor in the overproduction of urban solid waste. This solid waste causes environmental impacts by altering the chemical quality indicator attributes of soils. The objective of this research was to evaluate the chemical attributes of soil in an area impacted for more than 30 years by urban solid waste, compared to a preserved area in the municipality of Cristino Castro, Piauí State, Brazil. The study areas are approximately two hectares each: an area of urban solid waste, impacted and polluted for more than 30 years, and a permanent preservation area, used as a reference. In each area, soil samples were collected from the 0-20 cm and 20-40 cm depth layers. Soil chemical analyses were performed following the Manual of Soil Analysis Methods, and principal component analysis was the statistical method used to verify the relationships between soil attributes and the study areas. Most of the soil chemical attributes are clustered with the urban solid waste area. The chemical quality of soils is significantly altered in an area containing solid waste (an open-air landfill for over 30 years) in the municipality of Cristino Castro, Piauí State, Brazil. Most chemical attributes have higher values in the area containing urban solid waste when compared to the attributes of a preserved area. The main chemical attributes that were impacted by solid waste are: active acidity, calcium, phosphorus, potassium, zinc, and soil organic matter, resulting from daily deposits and accumulations of polluting components in the environment. The area containing urban solid waste has undergone significant alterations in the different soil layers evaluated (0-20 cm and 20-40 cm), directly impacting the environment.
- Djavan Pinheiro Santos
- Fernanda Mota da Silva