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Modelling tools to support carbon sequestration
policies in agricultural soils
E. Lugato1, A. Jones1 1 EU-JRC, IES, LRM
Global carbon balance (Pg)
Intensive tillage
Residue removal Low Productivity
Erosion
Soil organic
carbon
CO2
Carbon sequestration
Conservation tillage Conservation buffers
Cover crops Improved rotations
Soil organic
carbon
CO2
CRP
Large-scale SOC modelling application (1 km) at European level in agricultural soils
Process-based model
CENTURY,
Plant
growth
Carbon and
Nitrogen cycle
Water
cycle
OUTPUTS
2000 2006
CLC
1990
Crop rotation from
EUROSTAT
Climate ESDB Erosion
SIMULATION RESULTS
Top-soil (0-30 cm) organic carbon content (t C ha-1) in 2010
17.63 Gt of C
http
://e
usoi
ls.j
rc.e
c.eu
ropa
.eu/
libra
ry/T
hem
es/S
OC/C
APR
ESE/
SOC sequestration scenarios
1) Conversion from arable to grassland (LUC_AR_GR)
2) Crop residue management (AR_RES): 100% incorporation of cereal straw
compared to 50 % of BAU scenario;
3) Reduced tillage scenario (AR_RT): substitution of the mouldboard plough
with a more superficial tillage;
4) Combined residue incorporation + reduced tillage (AR_RET);
5) Ley in rotation (AR_LEY): inclusion of two consecutive years of a fodder
crop (alfalfa) in the BAU rotation;
6) Cover crop (AR_CC): the insertion of cover crops in the rotation schemes,
which biomass was entirely incorporated (green manure). Lugato, E., Bampa, F., Panagos, P., Montanarella, L. and Jones, A. (2014), Potential carbon sequestration of European arable soils estimated by modelling a comprehensive set of management practices. Global Change Biology. doi: 10.1111/gcb.12551
Techical potential SOC sequestration
Full application of alternative
management practices to ‘arable’ land
category (120 Mha) from 2013
Cumulated SOC sequestration trends
2013
BAU
AMP
time SO
C
dSOC
Territorial SOC sequestration effect
Yearly C sequestration rates by 2020 and 2050. Red dots represent the C sequestration rates derived from LTE
SOC and policies in the EU
Proposed European policies are placing higher emphasis on
soil organic carbon (SOC)
• Environment: EU Thematic Strategy for Soil Protection
(COM(2006)-231)
• Agriculture: Common Agricultural Policy (CAP) - Good
Agricultural and Environmental Condition – GAEC
• Climate: CO2 emission and removal should be accounted for the
cropland and grazing land management under the LULUCF
framework (Council and Parliament Decision on LULUCF (529/2013))
Modelling integration
Economy
Common Agricultural
Policy Regionalized
Impact (CAPRI) model
Bioenergy
Live cycle assessment
(LCA) of bioenergy
systems
Biophysical
processes
Effect of Good
Agricultural and
Environmental
Conditions on
erosion and soil
organic carbon
balance
Systematic review
Swedish Foundation for Strategic Environmental Research (Mistra) http://www.eviem.se/en/projects/Soil-organic-carbon-stocks/
Systematic map
THANK FOR YOUR
ATTENTION
Emanuele Lugato – IES, Soil Action [email protected]