Fig. 4
From: Legume-based rotation enhance long-term soil carbon storage in eastern Oregon dryland wheat systems
Total carbon (C) stocks (t C ha⁻¹) across 10 cm depth intervals measured at different sampling years in wheat-based cropping systems under (A) conventional tillage (CT) winter wheat-summer fallow (WW–SF), (B) CT winter wheat-spring pea (WW–SP), and (C) no-till (NT) WW–SP. Most of the data were reconstructed from archived soil samples using mid-infrared spectroscopy and partial least squares (PLS) models.
