Fig. 21
From: How does tillage intensity affect soil organic carbon? A systematic review
Forest plot for meta-analysis of concentration data for NT–HT comparison at > 30 cm depth. NT no tillage, HT high intensity tillage (see text for explanation). The summary effect estimate diamond is centred on the summary effect estimate for the meta-analysis, with the points of the diamond representing the 95% confidence intervals. Numbers in the right hand column are summary effect estimates [lower 95% CI, upper 95% CI]