Fig. 2: Carbon input and heterotrophic respiration for continuous grasslands and crop rotations. | Communications Earth & Environment

Fig. 2: Carbon input and heterotrophic respiration for continuous grasslands and crop rotations.

From: Maximizing soil organic carbon stocks through optimal ploughing and renewal strategies in (Ley) grassland

Fig. 2

a Simulated accumulated soil carbon input (C input) and b accumulated soil respiration (Rh) from 2005–2100 under climate change scenarios (IPCC scenarios RCP: 4.5 with and without 538 ppm CO2 enhancement and 8.5 with and without 935 ppm CO2 enhancement; data sources: CNRM and IPSL). Treatments included six continuous grasslands: G1 (grassland ploughed and restarted every year), G2 (grassland ploughed and restarted every two years), G3 (grassland ploughed and restarted every three years), G4 (grassland ploughed and restarted every four years), G6 (grassland ploughed and restarted every six years) and PG (grassland with no tillage); and three crop rotations: CC (rotation of annual crops), C3G3 (rotation of 3-year grasses and 3-year annual crops), G6C3 (rotation of 6-year grasses and 3-year annual crops). Graphs show the mean and standard deviation across the 8 scenarios.

Back to article page