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Impact of the 23-year recovery process of degraded lands and management systems on carbon stocks, soil aggregation, and CO 2 emissions in the Atlantic forest biome, Brazil.
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  • Jefferson Matheus Barros Ozório,
  • Isabela Neves,
  • Jean Sérgio Rosse,
  • Jaqueline Alves Lopes,
  • Laiza Coelho de Alcântara,
  • Laiza Coelho de Alcântar,
  • Eloi Panachuki,
  • Selene Cristina de Pierri Castilho,
  • Leandro Marciano Marra
Jefferson Matheus Barros Ozório
State University of Mato Grosso do Sul

Corresponding Author:[email protected]

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Isabela Neves
State University of Mato Grosso do Sul
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Jean Sérgio Rosse
State University of Mato Grosso do Sul
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Jaqueline Alves Lopes
State University of Mato Grosso do Sul
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Laiza Coelho de Alcântara
State University of Mato Grosso do Sul
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Laiza Coelho de Alcântar
State University of Mato Grosso do Sul
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Eloi Panachuki
State University of Mato Grosso do Sul
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Selene Cristina de Pierri Castilho
State University of Mato Grosso do Sul
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Leandro Marciano Marra
State University of Mato Grosso do Sul
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Abstract

The study aimed to quantify the carbon (C) contents and stocks and evaluate the structural stability and the total emission of mineralizable carbon (C-CO 2) in different areas with sandy-textured soil. Three managed areas were evaluated: conventional tillage system (CTS) considered as a reference, no-tillage (NT), permanent pasture (PP), and an area in the process of environmental recovery that comprises the Binational Biological Refuge of Maracaju (BBRM). Samples of deformed and undisturbed soils were collected from all areas in years 0-0.05; 0.05-0.10; 0.10-0.20; Soil layers of 0.20-0.40 m. From the samples, carbon stocks were analyzed, soil aggregation in CO 2 emission. There was a positive variation of ∆Stock-C for all areas compared to the reference area. The best structural parameters were observed in the PP and BBRM areas. The highest peaks of C-CO 2 emission occurred in the CTS area, especially on the 29 th and 49 th day. The CTS area evidenced that inadequate management decreased soil quality. The areas with conservation practices contributed to the quality of the edaphic environment for the attributes evaluated. The BBRM area demonstrated a great capacity to increase carbon stocks, also contributing to the improvement of the physical quality of the soil.