Assessment of the surface forest fuel load in the Ukrainian Polissia

Fire Ecology

Table 4 Correlation matrix of different forest fuel fractions’ dependence on taxation indicators of the stand

Variable	A stand age, years	DBH, cm	H average height (m)	P relative density	Stand stock, m³/ha	1 h	10 h	100 h	Live herbs	Litter and duff
A	1.00	0.96	0.91	− 0.66	0.77	− 0.10	− 0.03	0.09	0.15	0.53
DBH	0.96	1.00	0.94	− 0.58	0.80	− 0.07	0.02	0.21	0.06	0.62
H	0.91	0.94	1.00	− 0.37	0.91	− 0.06	0.09	0.25	0.07	0.60
P	− 0.66	− 0.58	− 0.37	1.00	− 0.13	− 0.02	0.03	0.16	− 0.02	− 0.22
Stand stock	0.77	0.80	0.91	− 0.13	1.00	− 0.10	0.01	0.18	0.13	0.50
1 h	− 0.10	− 0.07	− 0.06	− 0.02	− 0.10	1.00	0.59	0.01	− 0.57	0.00
10 h	− 0.03	0.02	0.09	0.03	0.01	0.59	1.00	0.42	− 0.52	0.16
100 h	0.09	0.21	0.25	0.16	0.18	0.01	0.42	1.00	0.03	0.28
Live herbs	0.15	0.06	0.07	− 0.02	0.13	− 0.57	− 0.52	0.03	1.00	− 0.11
Litter and duff	0.53	0.62	0.60	− 0.22	0.50	0.00	0.16	0.28	− 0.11	1.00

A, stand age, years; DBH, diameter at the breast height, cm; H, average stand height, m; P, relative density
Statistically significant correlation coefficients (p-value < 0.05) are highlighted in bold