What question did this study set out to answer?

This research aims to understand how rising vapor pressure deficit (VPD) affects gross primary productivity and carbon storage in terrestrial ecosystems.

May 3, 2026

Warming climate amplifies vapor pressure deficit limits on gross primary productivity.

Key Points

This research aims to understand how rising vapor pressure deficit (VPD) affects gross primary productivity and carbon storage in terrestrial ecosystems.
Assessed the relationship between vapor pressure deficit and productivity using hydraulic conductivity measurements.
Evaluated the impacts of rising VPD on carbon storage under controlled warming conditions.
Increased VPD correlates with significant declines in gross primary productivity (GPP).
High water potential linked to reduced carbon storage capacity, with a 50% loss of hydraulic conductivity observed.

Abstract

, the water potential at 50% loss of hydraulic conductivity, was the strongest predictor of their relative influence. Collectively, rising VPD may accelerate declines in terrestrial carbon storage under future warming.

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Cite This Study

Xu et al. (Thu,) studied this question.

synapsesocial.com/papers/69f6e5868071d4f1bdfc63d6 https://doi.org/https://doi.org/10.1038/s41467-026-72549-8

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