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| Titel |
Soil Organic Carbon for Global Benefits - assessing potential SOC increase under SLM technologies worldwide and evaluating tradeoffs and gains of upscaling SLM technologies |
| VerfasserIn |
Bettina Wolfgramm, Hans Hurni, Hanspeter Liniger, Sebastian Ruppen, Eleanor Milne, Hans-Peter Bader, Ruth Scheidegger, Tadele Amare, Birru Yitaferu, Farrukh Nazarmavloev, Malgorzata Conder, Laura Ebneter, Aslam Qadamov, Qobiljon Shokirov, Christian Hergarten, Gudrun Schwilch |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250081127
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| Zusammenfassung |
| There is a fundamental mutual interest between enhancing soil organic carbon (SOC) in the
world’s soils and the objectives of the major global environmental conventions (UNFCCC,
UNCBD, UNCCD). While there is evidence at the case study level that sustainable land
management (SLM) technologies increase SOC stocks and SOC related benefits, there is
no quantitative data available on the potential for increasing SOC benefits from
different SLM technologies and especially from case studies in the developing
countries, and a clear understanding of the trade-offs related to SLM up-scaling is
missing.
This study aims at assessing the potential increase of SOC under SLM technologies
worldwide, evaluating tradeoffs and gains in up-scaling SLM for case studies in Tajikistan,
Ethiopia and Switzerland. It makes use of the SLM technologies documented in the online
database of the World Overview of Conservation Approaches and Technologies
(WOCAT).
The study consists of three components:
1) Identifying SOC benefits contributing to the major global environmental issues for
SLM technologies worldwide as documented in the WOCAT global database
2) Validation of SOC storage potentials and SOC benefit predictions for SLM
technologies from the WOCAT database using results from existing comparative case studies
at the plot level, using soil spectral libraries and standardized documentations of ecosystem
service from the WOCAT database.
3) Understanding trade-offs and win-win scenarios of up-scaling SLM technologies from
the plot to the household and landscape level using material flow analysis.
This study builds on the premise that the most promising way to increase benefits from
land management is to consider already existing sustainable strategies. Such SLM
technologies from all over the world documented are accessible in a standardized way in the
WOCAT online database. The study thus evaluates SLM technologies from the WOCAT
database by calculating the potential SOC storage increase and related benefits by
comparing SOC estimates before-and-after establishment of the SLM technology.
These results are validated using comparative case studies of plots with-and-without
SLM technologies (existing SLM systems versus surrounding, degrading systems).
In view of upscaling SLM technologies, it is crucial to understand tradeoffs and
gains supporting or hindering the further spread. Systemic biomass management
analysis using material flow analysis allows quantifying organic carbon flows and
storages for different land management options at the household, but also at landscape
level.
The study shows results relevant for science, policy and practice for accounting,
monitoring and evaluating SOC related ecosystem services:
- A comprehensive methodology for SLM impact assessments allowing quantification of
SOC storage and SOC related benefits under different SLM technologies, and
- Improved understanding of upscaling options for SLM technologies and tradeoffs as
well as win-win opportunities for biomass management, SOC content increase, and
ecosystem services improvement at the plot and household level. |
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