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May 20, 2026Soil Use and Management

Straw Return Drives the Differential Responses of Soil Organic Carbon Fractions Regulated by Initial Soil Carbon Pool Status

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Authors

PCPanyue ChenRHRunxia HuoAWAnxin Wang

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Overview

Randomized trial quantifies how straw return impacts soil carbon fractions, suggesting tailored management strategies are needed.

Key Points

  • This study aims to quantify the effects of straw return on soil organic carbon fractions and identify key controlling factors.
  • Synthesized data from 102 published studies and 3 long-term field experiments.
  • Quantified effects on various soil organic carbon fractions using 303 paired observations.
  • Conducted path and random forest analyses to identify key drivers and predictors.
  • Straw return increased soil organic carbon by an average of 9.8%.
  • Particulate organic carbon (POC) increased by 27.0%, while mineral-associated organic carbon (MAOC) rose by 9.5%.
  • Identified an initial soil carbon threshold of approximately 8.93 g/kg, below which straw return enhances carbon accumulation.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a0d5064f03e14405aa9c1b2https://doi.org/10.1111/sum.70227
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The Microbial mechanisms of soil organic carbon pool transformation under long-term chemical fertilizer and straw application: Insights from an 18-year field experiment2026
  2. 2Optimizing Straw Return for Synergistic Gains in Soil Organic Carbon and Maize Yield in Northeast China: A Meta-Analysis2026
  3. 3Data-driven precision optimization of straw and N-fertilizer input to balance SOC sequestration and stability in China’s intensive croplands2026 · 3 citations
  4. 4Effects of Long-Term Cotton Straw Return on Soil Carbon and Bacterial Community in Topsoil and Deep Soil2025 · 3 citations
  5. 5Straw return affects the soil carbon and nitrogen pools and microbial structural and functional diversity2024 · 1 citations