Mechanistic scaling of soil-plant hydrodynamics in the Earth System
Name:
Mechanistic scaling of soil-plant hydrodynamics in the Earth System
Researchers:
Liu Qi (member in research team)
Provider:
GA ČR
Number:
24-10375S
Realization from:
2024
Realization to:
2026
Summary:
Unresolved mechanisms in soil-plant hydrodynamics constrain the accuracy of hydroclimatic
and vegetation dynamic prediction under climate change. We will address this knowledge gap
by integrating a novel model of vegetation water uptake at site scale with field observations on
root dynamics and water flows. Our model’s mechanistic representation of plant ecophysiology
enables us to quantify its contributions to soil-plant-atmosphere water flows. We will apply this
framework to observations of soil-vegetation hydrodynamics in beech and spruce forests at
intensively instrumented sites. The resulting comprehensive process description will relate
forest hydrodynamic functioning to tree growth and physiology. This mechanistic, quantitative
description of hydrodynamic processes will form a robust predictive framework for soil moisture,
transpiration, and limitation of photosynthesis by water availability. We will demonstrate its
predictive capacity on a broader network of field sites, evaluating the hydraulic functioning and
failure of beech and spruce forests in central Europe.
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