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Table 4 Effects of sub-watersheds, landscape positions, and land use on the soil carbon stocks

From: Sustainable land management interventions lead to carbon sequestration in plant biomass and soil in a mixed crop-livestock system: the case of Geda watershed, central highlands of Ethiopia

 NSurface and sub-surface soil carbon stocks (Mg ha−1)
0–15 cm15–30 cmTotal (0–30 cm)CO2 equiv.
Sub-watershed (SW)
 Untreated408.70b7.36b16.06b58.92b
 Treated5014.45a9.95a24.40a89.55a
Landscape position (LP)
Untreated upper208.66b7.63b16.29c59.80c
  Lower208.73b7.09b15.82c58.05c
Treated upper2013.79a12.16a25.95a95.21a
  Lower3014.90a8.48b23.38b85.77b
Land-use types (LU)
Untreated crop208.34c7.62c15.97c58.59c
  Grazing209.05c7.10c16.15c59.26c
Treated crop2014.65b12.98a27.43a100.66a
  Grazing2013.43b9.76b23.19b85.12b
  Tree lucerne1016.10a4.66d20.76b76.18b
P-SW ************
P-LP ns*****
P-LU ********
  1. Means within columns under each topic followed by different letter(s) are significantly different from each other at P ≤ 0.05; *significant at P ≤ 0.05; **significant at P ≤ 0.01;***significant at P ≤ 0.001; ns non-significant; equiv. equivalent