Table 1 Soil organic C, inorganic C, and total N stocks (mean ± standard deviation) in hyperarid, arid, semiarid, dry subhumid, dry and humid areas.
From: Soil resources and element stocks in drylands to face global issues
Land | Organic C (Pg) | Inorganic C (Pg) | Total N (Pg) | ||||||
|---|---|---|---|---|---|---|---|---|---|
0–0.3 m | 0–1 m | 0–2 m | 0–0.3 m | 0–1 m | 0–2 m | 0–0.3 m | 0–1 m | 0–2 m | |
Hyperarid | 11 ± 1 | 22 ± 1 | 31 ± 1 | 20 ± 2 | 65 ± 3 | 127 ± 5 | 1.3 ± 0.1 | 2.9 ± 0.1 | 4.5 ± 0.2 |
Arid | 45 ± 3 | 91 ± 3 | 127 ± 3 | 63 ± 2 | 241 ± 5 | 487 ± 9 | 4.9 ± 0.2 | 10.9 ± 0.2 | 17.3 ± 0.3 |
Semiarid | 100 ± 2 | 190 ± 3 | 259 ± 3 | 48 ± 2 | 207 ± 4 | 456 ± 7 | 9.3 ± 0.1 | 19.6 ± 0.2 | 30.0 ± 0.2 |
Dry subhumid | 91 ± 3 | 167 ± 4 | 228 ± 6 | 15 ± 1 | 66 ± 2 | 168 ± 4 | 7.1 ± 0.2 | 14.3 ± 0.2 | 21.4 ± 0.3 |
Dry | 248 ± 6 | 470 ± 7 | 646 ± 9 | 145 ± 4 | 578 ± 8 | 1237 ± 15 | 22.6 ± 0.4 | 47.7 ± 0.5 | 73.2 ± 0.6 |
Humid | 502 ± 12 | 955 ± 19 | 1401 ± 36 | 28 ± 3 | 107 ± 5 | 321 ± 9 | 36.1 ± 0.7 | 72.6 ± 1.1 | 111.1 ± 1.6 |
Global | 750 ± 15 | 1425 ± 21 | 2047 ± 39 | 173 ± 5 | 686 ± 10 | 1558 ± 19 | 58.6 ± 0.8 | 120.4 ± 1.3 | 184.2 ± 1.9 |
