Science

Climate shapes microbial nitrogen pump in forests, not in farmlands

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 06/11/2026, 00:25:25 UTC.

Briefings

A 2026 study reveals that forests host a long-lived microbial nitrogen pump driven by dead bacteria and fungi, whereas farmlands lack this mechanism. This discovery suggests forests regulate nitrogen cycling differently than previously assumed, potentially influencing carbon sequestration and soil health.

Key points

• Forests contain a long-lived microbial nitrogen pump where dead bacteria and fungi form a persistent nitrogen reservoir in soil.
• This pump relies on microbes taking up nitrogen and converting it into a stable form that resists decay, unlike the assumed regulation in farmlands.

Context

This research challenges the long-held assumption that microbial nitrogen use efficiency regulates nitrogen cycling in all ecosystems, specifically highlighting a distinct mechanism in forest soils.

Limitations

Evidence is limited to a single study from 2026; specific geographic locations, microbial species, or quantitative data on pump capacity remain unreported.

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