AGREGADOS BIOGÊNICOS E FISIOGÊNICOS EM SISTEMAS AGROFLORESTAIS SINTRÓPICOS DIFERENTES IDADES E MATA SECUNDÁRIA.
AGREGADOS BIOGÊNICOS E FISIOGÊNICOS EM SISTEMAS AGROFLORESTAIS SINTRÓPICOS DIFERENTES IDADES E MATA SECUNDÁRIA.
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DOI: https://doi.org/10.22533/at.ed.9662430049
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Palavras-chave: manejo sustentável; análise do solo; propiedade física, atividade biogênica
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Keywords: sustainable management; soil analysis; physical property,
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Abstract: The study was carried out on the Ecovila Iandê rural property in Santa Bárbara do Pará, with the objective of evaluating the influence of time and type of management in Agroforestry Systems (SAFs) on the formation of biogenic and physiogenic aggregates, using a secondary forest as a reference. The study areas, composed of 5-, 4- and 2-year SAFs, in addition to secondary forest, were located in a biosequence with the same soil type. Collections were carried out at five different points, with sampling at three depths (0-5, 5-10 and 10-20 cm). The aggregates were analyzed by sieving the samples and morphological characterization. After data collection, statistical analyzes were performed to assess the normality and homogeneity of the data, followed by analysis of variance. The results indicated significant differences in the distribution of biogenic aggregates in the 5-10 cm and 10-20 cm layers, with the 2-year SAFs presenting the highest average percentage of biogenic aggregates. Furthermore, this system was also successful in reducing the fraction of loose soil in the 0-5 cm and 5-10 cm layers. The study suggests that the more recent SAFs exert a greater influence on aggregate formation compared to older systems and secondary forest. Future studies are needed to better understand this relationship between vegetation cover and the formation of biogenic aggregates in SAF areas.
- Amanda Vanessa Araújo dos Santos
- Anaila Alencar de Amaral
- Breno dos Santos Barros
- Sheila dos Santos Tavares
- Maria Eduarda da Conceição Lourinho
- Adylson Pereira Campos Júnior