Table 5 Southern grassland ecosystem parameterization method.

From: Grassland Carbon Budget and Its Driving Factors of the Subtropical and Tropical Monsoon Region in China During 1961 to 2013

Variables

Values

Sources and notes

CV

490

Average observational values from 2011 to 2013

NV

12

Estimated value

CS

1000

Average observational values from 2011 to 2013

NS

120

Estimate based on the soil C:N and Cs values in the southern regions

NAv

1.032

Estimate based on the average Nav:NS = 0.86%

GPP

370

Estimate based on GPP:NPP at approximately 1.5−2

NPP

185

See Sun et al.37

NPPSAT

277.5

Estimate based on NPPSAT:NPP at approximately 1.2−1.5

NUPTAKE

4.4

See Melillo et al.86 in Table 2