A carbon balance model for the great dismal swamp ecosystem

Table 5 Stock-flow pathways given as a proportional multiplier

From stock	To stock	Flow type	AWC	CG	MG	PP
Atmosphere	Living leaf	Growth:NPP	0.268	0.278	0.314	0.285
Atmosphere	Living wood	Growth:NPP	0.194	0.258	0.242	0.230
Atmosphere	Living root	Growth:NPP	0.538	0.464	0.444	0.485
Living leaf	Leaf litter	Litterfall	0.340	0.470	0.500	0.420
Living wood	Deadwood	Mortality	0.021	0.016	0.023	0.018
Living root	Dead root	Litterfall	0.528	0.528	0.528	0.528
Leaf litter	Peat	Humification	0.230	0.250	0.230	0.240
Deadwood	Peat	Humification	0.035	0.050	0.025	0.040
Dead root	Peat	Humification	0.627	0.585	0.595	0.605
Leaf litter	Atmosphere	Emission	0.180	0.176	0.229	0.185
Deadwood	Atmosphere	Emission	0.050	0.060	0.085	0.067
Dead root	Atmosphere	Emission	0.213	0.294	0.275	0.258
Upper peat	Atmosphere	Emission	0.022	0.019	0.015	0.019
Upper peat	Deep peat	Peat accumulation	0.0012	0.0015	0.0010	0.0010

In the Stock-Flow model, annual flows are expressed as a proportional multiplier of the “From Stock”. For example, when calculating Leaf Litter to Peat (Humification), the model would multiply the Leaf Litter “From Stock” value by the multiplier value (0.23)
AWC Atlantic white cedar; CG cypress-gum; MG maple-gum; PP pond pine; NPP net primary productivity

ISSN: 1750-0680