Summary of "2.11. Plant Hydraulics — ctsm CTSM master documentation":

Plant Hydraulics

Overview
- This section describes the plant hydraulics component of the CTSM (Community Terrestrial Systems Model) model, which simulates the transport of water through the soil-plant-atmosphere continuum.

Soil-Plant-Atmosphere Continuum
- The model represents the movement of water from the soil, through the plant, and into the atmosphere.
- Key processes include root water uptake, stem and leaf water transport, and transpiration.

Root Water Uptake
- Roots extract water from the soil based on soil moisture and root distribution.
- The model accounts for root hydraulic resistance and soil-root interface resistance.

Stem and Leaf Water Transport
- Water moves upward through the plant xylem under negative pressure (tension).
- Leaf water potential and stomatal conductance are calculated based on water transport.

Transpiration
- Transpiration is calculated based on leaf water potential, atmospheric conditions, and stomatal conductance.
- The model includes the effects of hydraulic limitations on transpiration.

Overall, the plant hydraulics component provides a physically-based representation of water transport through the soil-plant-atmosphere system within the CTSM framework.