Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Microbial metabolism decline in degraded grasslands depends on soil organism size

Yang Hu, Mengfei Cong, Tianle Kou, Han Yan, Xinya Sun, Haolin Zhang, Yakov Kuzyakov, Yang Yang, Yimei Huang, Yanxing Dou, Zhaolong Zhu, Baorong Wang, Hongtao Jia, Shaoshan An

Agriculture Ecosystems & Environment · 2025

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Summary

This 2025 study investigates how soil organism size structure influences microbial metabolism in degraded grassland ecosystems. The authors suggest that metabolic decline in degraded grasslands is size-dependent—implying that different soil organism groups (bacteria, fungi, fauna) contribute differentially to ecosystem function loss. The findings may inform grassland restoration strategies by identifying which organismal size classes are most critical to functional recovery.

UK applicability

UK grasslands, particularly those under intensive management or showing signs of degradation, could benefit from understanding organism-size-specific restoration targets. However, differences in climate, soil type, and grassland management practices between China and the UK may limit direct applicability; local validation studies would strengthen relevance for UK upland and lowland grassland policy.

Key measures

Microbial metabolic rates by organism size class; soil degradation status; comparative functional metrics between degraded and intact grassland soils

Outcomes reported

The study examined how microbial metabolism (as a proxy for soil functioning) varies with soil organism size categories in degraded versus intact grassland soils. The research measured metabolic activity across different microbial and faunal size classes to identify which organisms drive functional decline in degraded systems.

Theme
Farming systems, soils & land use
Subject
Soil biology & microbiology
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
China
System type
Pasture-based livestock
DOI
10.1016/j.agee.2025.110178
Catalogue ID
SNmoqqs089-ejzwo6

Topic tags

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