Plant Cell EnvironJClub
The Winter Nitrogen Pump: Unveiling the Accumulation and Contribution of a Long-Overlooked Nitrogen Pool.
Plant, Cell & Environment · · Review
Ma, Gao + more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
The “winter N pump” framework shows that beneath snowpacks, cold-adapted soil microbes accumulate a substantial hidden nitrogen reservoir that is released at spring snowmelt.
- Why it matters: Winter has been treated as ecologically dormant, leaving a gap in how winter biogeochemistry controls ecosystem nitrogen budgets and early growing-season productivity.
- What they did: This review synthesizes evidence that woody plants take up and store nitrogen during winter, herbaceous plants do not resume acquisition until spring, and snowmelt synchronizes release.
- The result: Winter warming, earlier snowmelt, and intensified freeze-thaw cycles disrupt this coupling, potentially decoupling the spring nitrogen pulse from plant demand and increasing losses via leaching and denitrification.
The findingWhy it mattersWhat they didThe result
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