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Background and aims <p>A strong positive correlation between biodiversity and ecosystem multifunctionality has been widely observed. However, the effects of forest management fires on multifunctionality, the magnitude of multiple plant diversity metrics (taxonomic, phylogenetic, functional diversity, and species abundance), and microbial and soil biotic/abiotic variables within the comprehensive fire-impact framework remain poorly understood.</p> Methods <p>We examined multifunctionality changing patterns in the mid-growing season from 2019 to 2022—the first 4&#xa0;years following low-intensity prescribed burning—over typical local coniferous and broad-leaved forests of Northeast China.</p> Results <p>We found that multifunctionality recovered ~ 4&#xa0;years after burning. There was a significant decrease in soil nutrient support function (a decrease of ~ 14 times in coniferous forests and 8 times in broad-leaved forests) after the fires compared to unburned stands. Notably, prescribed burning strongly reversed the interfunctional relationship between trade-offs and synergies within the coniferous forests but mitigated it within the broad-leaved forests. Soil microhabitat conditions (bulk density and soil moisture), but not plant metrics, were the most critical parameters explaining fire-impact multifunctionality. Plant and microbial metrics affect waste decomposition and nutrient support functions.</p> Conclusions <p>Coniferous and broad-leaved forest ecosystem multifunctionality responds differently to prescribed burning; however, recovery in both could be facilitated by managing soil microhabitat conditions. This approach offers a practical and efficient way of mitigating the long-term impact of intentional fires aimed at reducing fuel loads on ecosystem functioning.</p>

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Soil microhabitat conditions drive post-fire ecosystem multifunctionality changes in forests recovering from prescribed burning

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Yu Han,
  • Kajar Köster,
  • Xu Dou,
  • Cheng Yu,
  • Jianyu Wang,
  • Yiyang Ding,
  • Yusong Wang,
  • Tongxin Hu

摘要

Background and aims

A strong positive correlation between biodiversity and ecosystem multifunctionality has been widely observed. However, the effects of forest management fires on multifunctionality, the magnitude of multiple plant diversity metrics (taxonomic, phylogenetic, functional diversity, and species abundance), and microbial and soil biotic/abiotic variables within the comprehensive fire-impact framework remain poorly understood.

Methods

We examined multifunctionality changing patterns in the mid-growing season from 2019 to 2022—the first 4 years following low-intensity prescribed burning—over typical local coniferous and broad-leaved forests of Northeast China.

Results

We found that multifunctionality recovered ~ 4 years after burning. There was a significant decrease in soil nutrient support function (a decrease of ~ 14 times in coniferous forests and 8 times in broad-leaved forests) after the fires compared to unburned stands. Notably, prescribed burning strongly reversed the interfunctional relationship between trade-offs and synergies within the coniferous forests but mitigated it within the broad-leaved forests. Soil microhabitat conditions (bulk density and soil moisture), but not plant metrics, were the most critical parameters explaining fire-impact multifunctionality. Plant and microbial metrics affect waste decomposition and nutrient support functions.

Conclusions

Coniferous and broad-leaved forest ecosystem multifunctionality responds differently to prescribed burning; however, recovery in both could be facilitated by managing soil microhabitat conditions. This approach offers a practical and efficient way of mitigating the long-term impact of intentional fires aimed at reducing fuel loads on ecosystem functioning.