Carbon intensity of the agricultural economy (CO2 t/R$1.00) over four phases.
The ratio of net CO2 emissions to total gross production value expresses the carbon intensity (CI) of the agricultural economy in question, meaning how much carbon it requires to generate a unit of value (CO2 t/R$ 1.00). The figure shows four different phases in the evolution of CI: 1) in the first phase there is a regime of high carbon in which the CI almost tripled, 2) from there, a low carbon intensity regime is present, leading to a sharply falling trend in the second phase, 3) the third phase appears as a strong fluctuation in the direction of another high carbon regime, altered with the start of the fourth phase, 4) repeating the downward trend of the second phase. Source: Table S2 and Table S3.