Estimation of the aboveground biomass and carbon stocks in open Brazilian Savannah developed on sandy soils

Table 2 Estimation of the parameters and precision measurements of the adjusted equations for the estimation of the dry biomass stock (kg) as a function of the d_30cm in the open Brazilian savannah

Model	β ₀	β ₁	β ₂	β ₃	R² % (adjust.)	Sxy (kg)	Sxy (%)
Hohenald Krenm	7.7068*	− 2.4160*	0.2447	–	71.20	11.13	70.13
Brenac	− 1.8494*	2.0488	− 7.8893*	–	89.46	11.58	72.89
Spurr	− 2.8828*	0.0352	–	–	89.04	6.87	43.26
Schumacher-Hall (logarithmic)	− 4.32	2.0157	1.5258	–	94.19	5.72	35.99
Stoate (Australian)	4.1867*	− 0.1461	0.0649	− 0.6371*	93.87	5.14	32.34
Spurr (logarithmic)	− 4.446	1.1305	–	–	93.95	6.79	42.74
Honner	− 5.5889	57.2571	–	–	94.50	4.87	30.65
Takata	40.3464	− 0.5224	–	–	88.67	6.98	43.98
Schumacher-Hall	0.01313	1.7793	2.0228	–	94.55	4.85	30.50

ISSN: 1750-0680