Figure 4
From: Soil organic carbon cycling in response to simulated soil moisture variation under field conditions
Extractable organic carbon concentrations under drought, rainfed, and irrigated treatments at 0–5 (a,b), 5–15 (c,d), and 15–30 (e,f) cm depths during 2018 and 2019. Different letters represent statistical significance at p ≤ 0.05 at each time point. No letters mean no statistical significance. Error bars represent standard error (n = 3). Sampling in May represents baseline and in November represents post shelter removal. Vertical dashed line represents shelter establishment date and solid line represents shelter removal date.
