From: The importance of accounting method and sampling depth to estimate changes in soil carbon stocks
Treatmentb | ESM depth (cm) | Difference in mean between ESM and FD stock changea (Mg C ha −1) | 95% CI for difference in mean between ESM and FD stock change (Mg C ha −1) | t-statistic | Hedges’ g effect size | p-value |
---|---|---|---|---|---|---|
IW | 0–15 | 2.23 | −0.45, 4.90 | 1.87 | 1.00 | 0.093 |
15–30 | 1.50 | −1.94, 4.94 | 0.97 | 0.52 | 0.353 | |
30–60 | −1.06 | −5.05, 2.93 | −0.60 | −0.32 | 0.565 | |
60–100 | −0.12 | −4.29, 4.06 | −0.06 | −0.03 | 0.950 | |
100–200 | −2.90 | −24.19, 18.40 | −0.31 | −0.16 | 0.766 | |
IW + N | 0–15 | 3.55 | 1.35, 5.76 | 3.65 | 1.95 | 0.005 |
15–30 | 0.66 | −3.90, 5.21 | 0.33 | 0.17 | 0.752 | |
30–60 | −2.50 | −9.32, 4.32 | −0.82 | −0.44 | 0.433 | |
60–100 | −0.66 | −12.84, 11.53 | −0.12 | −0.06 | 0.907 | |
100–200 | −1.47 | −20.70, 17.75 | −0.17 | −0.09 | 0.868 | |
RW | 0–15 | 3.14 | 0.91, 5.38 | 3.21 | 1.71 | 0.011 |
15–30 | 0.36 | −2.13, 2.85 | 0.32 | 0.17 | 0.755 | |
30–60 | −2.10 | −4.92, 0.72 | −1.66 | −0.88 | 0.128 | |
60–100 | −1.03 | −5.33, 3.27 | −0.54 | −0.29 | 0.602 | |
100–200 | −1.00 | −7.00, 5.00 | −0.37 | −0.20 | 0.718 | |
RW + N | 0–15 | 3.95 | 1.49, 6.40 | 3.68 | 1.96 | 0.006 |
15–30 | −0.45 | −3.04, 2.13 | −0.40 | −0.21 | 0.700 | |
30–60 | −1.96 | −7.71, 3.80 | −0.79 | −0.42 | 0.452 | |
60–100 | −0.41 | −9.51, 8.68 | −0.10 | −0.05 | 0.921 | |
100–200 | 1.64 | −14.49, 17.78 | 0.23 | 0.12 | 0.824 | |
RW + WCC | 0–15 | 3.93 | 1.05, 6.81 | 3.04 | 1.62 | 0.013 |
15–30 | 0.34 | −3.30, 3.97 | 0.22 | 0.12 | 0.833 | |
30–60 | −2.33 | −6.65, 2.00 | −1.25 | −0.67 | 0.248 | |
60–100 | 0.33 | −4.08, 4.74 | 0.17 | 0.09 | 0.871 | |
100–200 | −3.00 | −11.06, 5.06 | −0.83 | −0.44 | 0.426 |