Carbon storage in biomass, litter, and soil of different plantations in a semiarid temperate region of northwest China

Table 2 Allometric equations for different tree species and component

Tree component	Allometric equations	R ²	SEE	F
Larix gmelinii
Leaf	B = 0.113(D ² H)^0.406	0.841	0.282	184.391^***
Branch	B = 0.373(D ² H)^0.397	0.920	0.187	184.149^***
Trunk	B = 0.241(D ² H)^0.552	0.933	0.236	223.137^***
Root	B = 1.011(D ² H)^0.321	0.813	0.246	69.347^***
Whole tree	B = 1.282(D ² H)^0.465	0.962	0.147	406.789^***
Pinus tabuliformis
Leaf	B = 0.007(D ² H)^0.890	0.896	0.412	164.088^***
Branch	B = 0.001(D ² H)^1.246	0.924	0.486	231.508^***
Trunk	B = 0.016(D ² H)^1.020	0.911	0.435	193.603^***
Root	B = 0.005(D ² H)^1.060	0.963	0.284	489.867^***
Whole tree	B = 0.031(D ² H)^1.039	0.938	0.364	287.694^***
Picea crassifolia
Leaf	B = 0.056(D ² H)^0.608	0.918	0.251	212.772^***
Branch	B = 1.334(D ² H)^0.421	0.826	0.267	90.369^***
Trunk	B = 0.073(D ² H)^0.805	0.912	0.346	197.608^***
Root	B = 0.193(D ² H)^0.617	0.832	0.384	94.062^***
Whole tree	B = 1.026(D ² H)^0.602	0.899	0.280	168.304^***
Populus simonii
Leaf	B = 1.264(D ² H)^0.262	0.734	0.464	37.810^***
Branch	B = 1.017(D ² H)^0.472	0.776	0.554	24.204^***
Trunk	B = 0.464(D ² H)^0.646	0.884	0.484	57.222^***
Root	B = 0.483(D ² H)^0.550	0.809	0.498	30.294^***
Whole tree	B = 1.973(D ² H)^0.561	0.835	0.354	80.870^***

D ² H is squared DBH (D, (cm)) multiplied by tree height (H, (m)), B is the biomass of tree component (kg/tree), SEE is the standard error of estimate
^*** means the equation is significant (α = 0.001)

ISSN: 1297-966X