Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1111/ejss.12937 |
Licence  |
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| Title (Primary) | Carbon accumulation in a bare fallow Chernozem soil with high carbon input rates |
| Author | Franko, U.; Schulz, E. |
| Source Titel | European Journal of Soil Science |
| Year | 2021 |
| Department | BOOEK; BOSYS |
| Volume | 72 |
| Issue | 1 |
| Page From | 265 |
| Page To | 273 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2Fejss.12937&file=ejss12937-sup-0001-Table.docx |
| Keywords | bare fallow; farmyard manure; modelling; saturation; soil organic carbon |
| Abstract | A multitude of models for soil organic carbon (SOC) dynamics are
available to predict management impacts on SOC dynamics in its
interaction with environmental factors. Most models include one SOC pool
that has no or a very slow, negligible turnover. For this pool of
long‐term stabilized (LTS) organic matter, we assumed a dynamic physical
protection, whereby organic matter is protected in micropores and
exposed to microbial access due to soil structure dynamics. Dynamics of
the LTS pool is of special interest because of its very long turnover
time. Therefore, it is of special importance whether the size of this
pool is unlimited or if it reaches a saturation state. We investigated
this topic by applying the CCB (CANDY Carbon Balance) model on a dataset
from a long‐term experiment that started in 1983 in Bad Lauchstädt,
Germany on a Haplic Chernozem and includes bare fallow treatments with
the application of farmyard manure at different rates from 5 to 20 kg m−2 year−1.
Observations of SOC development over time supported our hypothesis
about the existence of a saturation effect and were used to calibrate
the CCB model with the hypothetical assumption of a limited LTS pool
size. The model results suggest an upper limit of the LTS pool of
1.07 M% (percent of dry soil mass) SOC for the Bad Lauchstädt site.
Furthermore, model calibration of LTS turnover revealed that organic
matter in this pool is released from its protected state at a very low
rate of 0.003 year−1.
Highlights
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| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22783 |
| Franko, U., Schulz, E. (2021): Carbon accumulation in a bare fallow Chernozem soil with high carbon input rates Eur. J. Soil Sci. 72 (1), 265 - 273 10.1111/ejss.12937 |
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