Humus and Humic Acids of Luvisol and Cambisol of Jiguli Ridges, Samara Region, Russia

Table 1

Total carbon content, portion of HAs, humus type ratio and humus richness by nitrogen.

Horizon	Ctotal, g/kg	CHA Ctotal	CHA CFA	C/N
Cambisol
A	37.0	19.	0.66	15.5
AB	10.2	18.6	0.38	19.9
BW	3.4	23.6	0.61	6.6
Rendzic leptosol related to cambisol
A	38.0	26.4	1.10	16.7
Luvisol
A	49.0	18.0	0.86	12.3
BEL	3.6	25.0	1.00	18.0
BT	4.6	38.0	1.04	8.2
Rendzic leptosol related to luvisol
A	37.6	31.3	2.31	14.5