De potentie voor koolstofvastlegging in de Nederlandse landbouw

Samenvatting

The Dutch climate agreement comprises a target for agricultural soils to sequester an additional 0.4-0.6 Mton CO2 per year in 2030. In this study the technical potential for carbon sequestration in Dutch agricultural soils has been determined using the soil carbon model RothC at national scale. The total potential for the combination of measures is about 0,9 Mton CO2 per year compared to the baseline of 2017. More permanent grassland, cover crops and an increased share of cereals in the rotation are the measures that contribute most. More carbon in the soil can also result in an increased N2O emission due to the addition of easily decomposable organic matter. A literature study showed that most measures have a net emission reduction, but the effect depends on the current crop and soil management. This study also assessed carbon sequestration in biomass in landscape elements and agroforestry. An increase in the area of landscape elements to 1% of the agricultural area results in a sequestration rate of 0.4 Mton CO2/year for a period of 15 years. For agroforestry the potential is estimated at 0.1 Mton CO2/year if the Masterplan Agroforestry (25 000 ha) will be implemented.