This document discusses soil organic carbon stock changes in livestock production systems. It provides an outline for a scoping analysis for the LEAP Technical Advisory Group (TAG). The outline includes sections on background and objectives, types of soil organic carbon models, soil organic carbon changes and life cycle assessment, contentious issues in modelling approaches, and proposed boundaries. It also summarizes work on the global management of soil organic matter as a priority action identified by the ITPS. Examples of initiatives from different countries aimed at soil organic matter management are provided based on received responses to a template. The study is ongoing and more responses are needed to strengthen the assessment.

2. Scoping analysis for the LEAP Technical
Advisory Group (TAG)
Soil Carbon Stock Changes in
livestock production systems
Guillermo Peralta and Miguel A. Taboada
INTA Institute of Soils and CONICET-Argentina
Miguel Brandão
KTH – Royal Institute of Technology, Stockholm, Sweden

3. Outline
1. Background and objectives
2. Types of SOC models
3. SOC changes and LCA
4. Contentious issues in modelling approaches
5. Proposed boundaries
6. Conclusions

4. Second Workshop of the International
Network of Soil Information Institutions
(INSII)
Follow up of the WSRR 2015. Priority
of action: Global Management of Soil
Organic Matter
Miguel A. Taboada
INTA Institute of Soils and CONICET-Argentina

5. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

6. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

7. In its Fifth Working Session the ITPS established four specific working groups tasked
to closely follow up on the four main priorities for action identified by the SWSR:
1. Sustainable soil management and assessment of soil degradation and
restoration (WG Leader: Gunay Erpul, Turkey)
2. The global management of soil organic matter (WG Leader: Miguel Taboada,
Argentina)
3. Sustainable nutrient management aiming to stabilize or reduce global
nitrogen (N) and phosphorous (P) fertilizer use while simultaneously increasing
fertilizer use in regions of nutrient deficiency. (WG Leader: Gary Pierzynski, USA)
4. Improve soil data and information systems. (WG Leader: Neil McKenzie,
Australia).

8. International context:
a) ITPS-SPI-UNCCD collaboration to address a joint deliverable 2: “Joint reporting
on soil organic carbon in the framework of indicator 15.3.1 of the SDGs and the
endorsed metrics for the assessment of land degradation neutrality (LDN) with
the support of WG 2 ’Soil Organic carbon’ of ITPS”.
Joint ITPS-SPI reports to be submitted to the 5th GSP Plenary Assembly and to
the 13th Conference of the Parties (COP 13) of UNCCD in 2017.
b) Launching of “4 pour mil Initiative” by the French Government.
c) The elevated role of soil organic carbon in the global climate change discussion.
SOC would be incorporated into the IPCC Assessment Reports (AR)
(especially AR6).
Joint Global ITPS-GSP-FAO and IPCC Soil Organic Carbon Conference
organized during the first quarter of 2017.

9. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

10. Objetive:
The “Global Management of Soil Organic Matter (SOM)” priority of action aims to
list, review and/or evaluate the impact of different initiatives, practices and actions
undertaken by different stakeholders involved in SOM management with the aim of
improving soil functions, soil fertility, structural stability and movement of water in
agroecosystems and ecosystems.
This includes any practice, initiative and action aimed at carbon sequestration in soil
profiles and SOM maintenance or recovery.
Priority of Action 2: Global management of Soil
Organic Matter (SOM).

11. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

12. 2. Who was involved and/or
participated?
Stakeholders: public/private, type of farmer,
gender issues, type of product
4. What were the results?
Effectiveness of the practice: SOM contents,
production levels (crop yields, meet and dairy
production, etc), greenhouse emissions..
1. What was done and why?
Field and/or practices aiming at SOC
sequestration, maintanance or restoration
Policies, laws and or regulations
SOM and climate change mitigation
monitoring, remote sensing, modeling
Publications: peer reviewed, “grey”,
congress and meetings, local reports
5. How were changes
observed or measured?
3. Where and what area
(size) was covered?
Scale of implementation: global, supra-
national, national, regional
Soil types
ITPS Priority of Action: “Global Management of Soil Organic Matter (SOM)”

13. What were the results?
Number Practice Law/regulation Scale Region/Country/Continent
Soil Type(s)
(FAO Soil
Classification
preferred) Main results References Monitoring
1
Ley Nº 18.564
CONSERVACIÓN, USO Y
MANEJO ADECUADO DE LOS
SUELOS Y LAS AGUAS Uruguay
Phaeozems,
Vertisols,
Palnosols,
and others
Enacted in August 2008 (Decree 405) and applied
by means of obligatory "Plans for Soil Use and
Soil", with practices recommended by
agronomists with the aim of not exceeding
maximum allowable soil losses, calculated with
the RUSLE equation. Successfull adoption by the
farmers, but with previous advice of respected
soil scientists.
Available in:
http://www.cebra.com.uy/ren
are/planes-de-uso-y-manejo-
de-suelos/ingreso-del-plan/
2 No tillage adoption
Southern Cone of America:
Argentina, Brasil, Uruguay,
Bolivia y Paraguay.
Phaeozems,
Vertisols,
Planosols,
Fluvisols,
Ferralsols,
and others
General increase in adoption from about 1990,
driven by different factors (soil conservation,
high fuel prices, greater production scale, etc.).
The region consists of about 40% of the global no-
tilled area (more than 120 million hectares). Soil
erosion losses decreased and physical quality of
topsoil generally improved.
Álvarez, C. R., M. A. Taboada, F. H.
Gutiérrez Boem, A. Bono, P. L.
Fernández, P. Prystupa. 2009. Topsoil
properties as affected by tillage systems in
the Rolling Pampa region of Argentina.
Soil Science Society of America Journal
73: 1242-1250. (Online ISSN: 1435-
0661 Print ISSN: 0361-5995).
Steinbach, H. S. & R. Alvarez. 2006.
Changes in soil organic carbon
contents and nitrous oxide
emissions after introduction of no-
till in Pampean agroecosystem. J.
Environ. Qual. 35: 3-13.
Bolliger A., J. Magid, .J. C. T. Amado,
F. S. Neto, M. de F. dos Santos
Ribeiro, A.Calegari, R.Ralisch, A.de
Neergaard. 2006. Taking Stock of
the Brazilian “Zero‐Till Revolution”:
A Review of Landmark Research
and Farmers' Practice. Advances in
Agronomy 91, 47-110.
3 Australia
Australian Government, 2011.
NCAS: National Carbon
Accounting System.
http://www.climatechange.gov.au
/en/government/initiatives/nation
al-carbon-accounting.aspx.
National
soil carbon
accounting
4 France
GIS Sol. 2014. Groupement
d'Intérêt Scientifique Sol. INRA
Infosoil Unit. En:
htpp://www.gissol.fr.
5
Soil
sampling
grid
What was done and why? Where and what area was covered? How were changes observed or measured?

14. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

15. • 23 responses received
• Argentina, Bolivia, Uruguay, Peru, Venezuela,
Mexico and Honduras.
• Austria, France
• Senegal
• China
• Australia

16. Examples
• Austria: greening of arable land by intermediate crops and by
"Evergreen" system;
• Venezuela: Agroecological grazing management (Voisin System)
• Uruguay, Honduras, Mexico, Senegal: laws or regulations for the
use and conservation of soils and forests, application of manures and
biosolids.
• Songliao Region (China): implementation of a regional plan for
erosion control, regulation of land use and recovery of degraded
soils.
• Argentina: launching of Land Degradation Neutrality Program

17. Outline
1. Background
2. Objectives
3. Template and examples
4. Ongoing results
5. How can this study continue?

18. • More responses are needed to strengthen the assessment.
Renewed call for collaboration soon.
• Review of published literature is still lacking.
• Follow up of Priority 2 “Global management of
SOM” should be related to Global Soil C Mapping.

19. Thanks!
Responses and/or collaborations received in this email address:
global.som.management@gmail.com