Table 1 Element-parameter-function system for the data file in the Chinese Forest Carbon Cycle Dynamics (CFCCD) database.

From: Reference carbon cycle dataset for typical Chinese forests via colocated observations and data assimilation

Observation-based basic elements

Atmospheric element

air temperature (Ta)

photosynthetically active radiation (PAR)

relative humidity (RH)

Water element

soil moisture (Sw)

soil saturated moisture capacity (Sc)

precipitation (Precip)

Biological element

litterfall

leaf area index (LAI)

biomass for different plant tissues

Soil element

soil organic carbon (SOC) density

soil organic matter content (SOM)

soil bulk density (SBD)

soil texture (soil mechanical composition)

Auxiliary carbon flux

NEE

Model input

Time-continuous meteorological drivers at model-running time step

Assimilation dataset

Assimilated process parameters

carbon allocation coefficients

vegetation, soil and ecosystem turnover times

Assimilated C storage functions

soil, vegetation, and ecosystem carbon stocks

ecosystem productivity, respiration and carbon sink