Table 1 Chemical properties of soil associated with tree health status among different wood study sites (median value, minimum and maximum value).
Health status | Study site | Moisture content (%) | NO2− + NO3− (g N kg−1 dry soil) | NH4 + (g N kg−1 dry soil) | pH | Carbon (g kg−1) | C:N ratio | Nitrification potential (μmol NH3 g−1 per day) |
|---|---|---|---|---|---|---|---|---|
Asymptomatic | Attingham | 18.6 (8.4, 62.7) | 1.6 (0, 41.0) | 16.8 (0, 82.6) | 4.7 (3.9, 5.5) | 5.6 (2.4, 14.0) | 15.6 (12.8, 19.4) | 0.12 (0.0, 0.4) |
Bigwood | 18.6 (4.5, 36.7) | 5.4 (1.4, 13.4) | 1.5 (0.3, 27.4) | 4.4 (4.0, 7.7) | 3.5 (2.3, 6.8) | 16.5 (13.3, 22.0) | 0.04 (0.0, 0.19) | |
Chestnut | 23.5 (9.7, 73.3) | 7.4 (3.4, 17.5) | 2.5 (0.8, 15.4) | 4.2 (3.8, 5.2) | 2.8 (1.4, 10.2) | 15.5 (13.4, 32.4) | 0.03 (0.0, 0.13) | |
Great monks wood | 19.1 (15.1, 40.3) | 1.7 (1.4, 30.4) | 20.0 (6.3, 53.3) | 4.6 (4.1, 7.5) | 3.9 (2.3, 18.2) | 16.5 (14.0, 19.5) | 0.05 (0.0, 0.14) | |
Langdale | 22.2 (13.1, 37.3) | 2.2 (1.4, 6.2) | 28.3 (2.2, 40) | 5.8 (5.5, 8.3) | 4.9 (1.7, 8.6) | 13.3 (12.2, 16.0) | 0.43 (0.26, 0.61) | |
Speculation | 26.5 (14.2, 49.0) | 4.5 (0.7, 39.0) | 1.9 (0.8, 8.15) | 4.3 (4.0, 4.7) | 9.3 (2.9, 51.1) | 24.5 (14.6, 36.7) | 0.09 (0.0, 0.16) | |
Winding wood | 31.4 (11.8, 66.0) | 23.4 (1.5, 153.0) | 12.4 (3.4, 218) | 4.0 (3.6, 7.6) | 7.3 (2.5, 34.4) | 18.5 (14.6, 21.6) | 0.33 (0.13, 0.90) | |
Symptomatic | Attingham | 18.8 (11.6, 45.4) | 1.8 (0, 39.9) | 16.2 (0, 79.6) | 4.5 (4.1, 6.7) | 4.1 (2.2, 17.7) | 16.1 (14.0, 21.3) | 0.13 (0.0, 0.24) |
Bigwood | 15.4 (10.4, 26.8) | 7.9 (3.1, 17.4) | 0.9 (0.2, 19.5) | 4.7 (4.1, 7.1) | 3.9 (1.3, 5.5) | 16.6 (12.3, 23.8) | 0.04 (0.02, 0.12) | |
Chestnut | 26.3 (4.8, 89.2) | 6.2 (2.8, 39.4) | 2.5 (0.6, 45) | 4.2 (3.9, 4.6) | 3.0 (1.5, 6.8) | 15.4 (13.8, 17.8) | 0.04 (0.00, 0.21) | |
Great monks wood | 19.5 (13.6, 35.9) | 1.7 (1.4, 15.7) | 15.2 (4.0, 53.3) | 4.6 (3.9, 5.2) | 3.3 (1.6, 17.6) | 16.0 (13.9, 20.9) | 0.06 (0.02, 0.11) | |
Langdale | 24.4 (15.1, 36.5) | 2.4 (1.5, 10.2) | 30.4 (16.7, 70.4) | 5.7 (4.7, 7.5) | 4.5 (3.1, 8.3) | 13.4 (11.4, 19.1) | 0.40 (0.23, 0.59) | |
Speculation | 29.5 (21.3, 42.7) | 3.7 (1.3, 17.6) | 1.1 (0.72, 4.9) | 4.2 (4.1, 5.7) | 6.7 (2.3, 16.4) | 19.5 (13.8, 31.1) | 0.12 (0.01, 0.41) | |
Winding wood | 27.6 (10.2, 61.6) | 7.1 (1.8, 102.0) | 11.3 (3.6, 5.2) | 4.1 (3.6, 4.8) | 8.3 (3.5, 36.8) | 18.6 (16.1, 20.7) | 0.28 (0.12, 0.51) |
