Summary of the Article:

Vegetation Composition

The vegetated surfaces in the model are composed of up to 15 possible plant functional types (PFTs) plus bare ground. Additional PFTs are added if the irrigation or crop models are active.

The PFTs differ in various parameters that affect the plant's interaction with the environment, such as:
- Leaf and stem optical properties that determine radiation interactions
- Root distribution parameters that control water uptake from the soil
- Aerodynamic parameters that affect heat, moisture, and momentum transfer
- Photosynthetic parameters that determine stomatal resistance, photosynthesis, and transpiration

The composition and abundance of PFTs within a grid cell can be either prescribed as time-invariant fields or can evolve dynamically if the model is run in transient land cover mode.

The table provided lists the 15 base PFTs, their acronyms, and their corresponding IVT (index of vegetation type) values in the surface dataset. Additional PFTs are added if the irrigation or crop models are active.