From: Infrared spectra of soil organic matter under a primary vegetation sequence
Profile | Horizon | Sample | Ash | C | N | C/N |
---|---|---|---|---|---|---|
I | H | Total soila | 37.9 | 35.3 | 1.12 | 31.5 |
H | Water-extractb | 7.4 | 45.3 | 1.92 | 23.6 | |
H | Alkali-extractc | 4.9 | 50.4 | 1.55 | 32.5 | |
H | Humind | 11.7 | 49.0 | 1.00 | 49.0 | |
B | Total soil | 99.2 | 0.2 | 0.02 | 10.0 | |
B | Alkali-extract | 11.5 | 41.5 | 1.63 | 25.5 | |
B | Humin | 70.2 | 11.1 | 0.32 | 34.7 | |
II | H | Total soil | 22.3 | 41.0 | 1.42 | 28.9 |
H | Water-extract | 7.0 | 44.6 | 2.15 | 20.7 | |
H | Alkali-extract | 5.4 | 51.7 | 1.95 | 26.5 | |
H | Humin | 12.9 | 49.0 | 1.32 | 37.1 | |
B | Total-soil | 99.0 | 0.5 | 0.02 | 25.0 | |
B | Alkali-extract | 12.5 | 41.4 | 1.67 | 24.8 | |
B | Humin | 67.9 | 16.4 | 0.52 | 31.5 | |
III | H | Total-soil | 58.5 | 22.1 | 0.93 | 23.8 |
H | Water-extract | 9.3 | 44.3 | 2.45 | 18.4 | |
H | Alkali-extract | 4.7 | 51.6 | 2.38 | 21.7 | |
H | Humin | 16.0 | 49.5 | 1.60 | 30.9 | |
B | Total soil | 98.4 | 0.8 | 0.04 | 20.0 | |
B | Alkali-extract | 10.2 | 43.9 | 2.18 | 20.1 | |
B | Humin | 71.4 | 19.7 | 0.56 | 35.2 |