Summary:

## General Phenology Flux Parameterization

The article discusses the modeling of carbon and nitrogen fluxes in the context of plant phenology. Key points:

1. Fluxes of carbon and nitrogen pass through a special "transfer pool" (denoted _\_xfer_) maintained as a separate state variable for each tissue type.

2. The storage (_\_stor_) and transfer (_\_xfer_) pools are kept separate to simplify the accounting of transfers into and out of storage over a single growing season.

3. Figure 2.20.1 provides an example of the annual phenology cycle for a seasonal deciduous plant.

The article focuses on the underlying modeling approach used to represent the dynamic fluxes of carbon and nitrogen within the plant system, with the storage and transfer pools serving as important intermediate steps in this process.