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Purpose <p>Albic soils, characterized by a prominent, compact, and nutrient-poor albic horizon, represent a major low-productivity soil type in Northeast China. Despite the development of various amelioration strategies, a systematic synthesis of their theoretical underpinnings and integrated application, particularly from a soil health perspective, is currently lacking. This limits our ability to design context-specific, sustainable management systems for these degraded soils.</p> Methods <p>This review systematically analyzes the interconnected physical, chemical, and biological constraints that govern the low productivity of Albic soils. It further synthesizes and evaluates synergistic management strategies aimed at holistic soil health enhancement, drawing upon both empirical field studies and mechanistic research.</p> Results and discussion <p>The key constraints include poor structure, shallow rooting depth, acidity, nutrient deficiency, and impoverished biological activity. Effective amelioration requires integrated approaches. Physical engineering (e.g., subsoil mixing) enhances soil structure, including aggregate stability, porosity, and water infiltration, thereby increasing crop yield by 2.2–20%. Chemical-organic amendments (e.g., straw-biochar systems) can elevate soil organic carbon by 12–36% and correct acidity over 20 years, which are linked to nutrient availability and pH buffering. Biological activation through microbial inoculation and organic inputs is crucial for rebuilding nutrient cycles. Collectively, these integrated measures target multiple soil health dimensions simultaneously. However, the longevity of improvements, cost-effectiveness of technologies, and inconsistent field efficacy of microbial inoculants remain significant challenges.</p> Conclusions <p>This review consolidates a scientific basis for moving beyond simple reclamation towards sustainable, health-focused management of Albic soils. To address current challenges, future research should prioritize: (1) elucidating specific microbial indicators and mechanisms driving Albic soil health evolution; (2) developing predictive diagnostic tools via AI and multi-source data integration; (3) formulating stable, native, and cost-effective microbial consortia; and (4) establishing climate-resilient adaptive management frameworks.</p>

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A systematic review of amelioration mechanisms and strategies for Albic soils in Northeast China

  • 期刊论文

  • 发表日期：

    2026年4月28日

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  • Huaidi Yang,
  • Xilun Zhang,
  • Ping Wang,
  • Yalong Liu,
  • Bin Ma,
  • Qiuju Wang,
  • Jingkuan Wang

摘要

Purpose

Albic soils, characterized by a prominent, compact, and nutrient-poor albic horizon, represent a major low-productivity soil type in Northeast China. Despite the development of various amelioration strategies, a systematic synthesis of their theoretical underpinnings and integrated application, particularly from a soil health perspective, is currently lacking. This limits our ability to design context-specific, sustainable management systems for these degraded soils.

Methods

This review systematically analyzes the interconnected physical, chemical, and biological constraints that govern the low productivity of Albic soils. It further synthesizes and evaluates synergistic management strategies aimed at holistic soil health enhancement, drawing upon both empirical field studies and mechanistic research.

Results and discussion

The key constraints include poor structure, shallow rooting depth, acidity, nutrient deficiency, and impoverished biological activity. Effective amelioration requires integrated approaches. Physical engineering (e.g., subsoil mixing) enhances soil structure, including aggregate stability, porosity, and water infiltration, thereby increasing crop yield by 2.2–20%. Chemical-organic amendments (e.g., straw-biochar systems) can elevate soil organic carbon by 12–36% and correct acidity over 20 years, which are linked to nutrient availability and pH buffering. Biological activation through microbial inoculation and organic inputs is crucial for rebuilding nutrient cycles. Collectively, these integrated measures target multiple soil health dimensions simultaneously. However, the longevity of improvements, cost-effectiveness of technologies, and inconsistent field efficacy of microbial inoculants remain significant challenges.

Conclusions

This review consolidates a scientific basis for moving beyond simple reclamation towards sustainable, health-focused management of Albic soils. To address current challenges, future research should prioritize: (1) elucidating specific microbial indicators and mechanisms driving Albic soil health evolution; (2) developing predictive diagnostic tools via AI and multi-source data integration; (3) formulating stable, native, and cost-effective microbial consortia; and (4) establishing climate-resilient adaptive management frameworks.