Carbon Sequestration Potential in Arable Soils of the Czech Republic – Values Aggregated at the District Level

The dataset presents the results of simulations assessing the carbon sequestration potential of arable soils in the Czech Republic, utilising the EPIC-IIASA CZ simulation platform. It consists of outputs derived from the modelling of various agronomic scenarios at the district level (LAU1), incorporating three climate scenarios: RCP 2.6, 4.5, and 8.5. The data reflect the effects of four model cropping systems, differing levels of nitrogen and manure fertilisation intensity, residue management, and irrigation on the principal parameter—namely, the change in average carbon content within soil organic matter in the top 30 cm of soil during the periods 2040–2060 (or 2080–2100), compared to the reference average for 2000–2020. This parameter is expressed as tonnes of carbon per hectare (t C ha⁻¹). For a given cropping system and its variants, the values indicate the potential for carbon sequestration over 40- and 80-year timescales. Structure of the database: Column name Meaning and description of values (categories) Values Example scenario Climate scenario identifier rcp26 / rcp45 / rcp85 timescale Length of the period for which the value is calculated (years) 40 / 80 system Code of the model cropping system (see detailed description) CpCm1 / ApCm1 / CpRg1 / ApRg1 irrigation Irrigation regime (rainfed, irrigated) rf / irr nfert Nitrogen fertilisation level (Nn = none / Nl = low / Nm = moderate / Nh = high). Level Nh means that for each crop, the annual dose is set to the maximum N application limit according to the Nitrate Directive. Nm = 60% Nh, Nl = 30% Nh, Nn = 0% Nh. Nn / Nl / Nm / Nh fmfert Share of total N dose applied in the form of manure (fm0 = 0 % / fm60 = 60 % / fm100 = 100 %). fm0 / fm60 / fm100 baler Post-harvest residue management (R0 = straw removed / R30 = 30 % remains in field / R60 = 60 % / R100 = 100 %) R0 / R30 / R60 / R100 poly_id Unique geographical code of the region (LAU 1 code). CZ0100 value Numeric value of the metric. Average increase (+) or decrease (-) of organic C content in the top 30 cm of soil (t ha-1) 4.989584358158098 The dataset contains 59,136 records.