Scholarlink

<p>This study evaluated the temporal dynamics of soil physical quality and soil organic carbon (SOC) stocks in <i>Hevea brasiliensis</i> plantations of different ages established on degraded sandy Oxisols in the Brazilian Cerrado under low-input management, focusing on the relationships between seasonal litter inputs, soil structural development, and SOC accumulation over time. Three rubber plantations established in 2006 (S2006), 2007 (S2007), and 2009 (S2009), together with a reference native forest stand (NF), were evaluated at soil depths of 0.00–0.40&#xa0;m. After the first two years following establishment, no additional fertilization or herbicide applications were performed. Soil physical attributes, aggregation indices, total organic carbon (TOC), and SOC stocks were determined. Older plantations exhibited lower penetration resistance, higher porosity, and improved soil aggregation, indicating progressive structural recovery over time. The aggregation index (AGRI) was more sensitive than the aggregate stability index (ASI) in detecting structural changes. The oldest plantation (S2006) presented higher TOC and SOC stocks than the adjacent native forest reference stand evaluated in this chronosequence, indicating substantial carbon accumulation under long-term low-input management. Low-input rubber plantations promoted significant improvements in soil physical quality and SOC accumulation in sandy Oxisols of the Brazilian Cerrado. These findings highlight the importance of seasonal litter deposition and natural nutrient cycling in supporting long-term soil structural development. Under the conditions evaluated in this chronosequence, the oldest plantation accumulated SOC stocks higher than those observed in the reference native forest stand, demonstrating the potential of low-input perennial rubber plantations to contribute to soil restoration and carbon accumulation in degraded tropical soils.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Soil physical quality and organic carbon dynamics in low-input perennial rubber plantations across a chronosequence in the Brazilian Cerrado

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月20日

查看全文
  • Luís Felipe Leite Sabino de Oliveira,
  • Lucas Eduardo de Oliveira,
  • Taísa Cristina Tinoco,
  • Fernando Antônio de Souza,
  • Hamilton César de Oliveira Charlo,
  • Leonardo Carneiro Morgado,
  • Arcângelo Loss,
  • Dinamar Márcia da Silva Vieira,
  • José Luiz Rodrigues Torres

摘要

This study evaluated the temporal dynamics of soil physical quality and soil organic carbon (SOC) stocks in Hevea brasiliensis plantations of different ages established on degraded sandy Oxisols in the Brazilian Cerrado under low-input management, focusing on the relationships between seasonal litter inputs, soil structural development, and SOC accumulation over time. Three rubber plantations established in 2006 (S2006), 2007 (S2007), and 2009 (S2009), together with a reference native forest stand (NF), were evaluated at soil depths of 0.00–0.40 m. After the first two years following establishment, no additional fertilization or herbicide applications were performed. Soil physical attributes, aggregation indices, total organic carbon (TOC), and SOC stocks were determined. Older plantations exhibited lower penetration resistance, higher porosity, and improved soil aggregation, indicating progressive structural recovery over time. The aggregation index (AGRI) was more sensitive than the aggregate stability index (ASI) in detecting structural changes. The oldest plantation (S2006) presented higher TOC and SOC stocks than the adjacent native forest reference stand evaluated in this chronosequence, indicating substantial carbon accumulation under long-term low-input management. Low-input rubber plantations promoted significant improvements in soil physical quality and SOC accumulation in sandy Oxisols of the Brazilian Cerrado. These findings highlight the importance of seasonal litter deposition and natural nutrient cycling in supporting long-term soil structural development. Under the conditions evaluated in this chronosequence, the oldest plantation accumulated SOC stocks higher than those observed in the reference native forest stand, demonstrating the potential of low-input perennial rubber plantations to contribute to soil restoration and carbon accumulation in degraded tropical soils.

Graphical abstract