 |
| Titel |
Carbon farming in hot, dry coastal areas: an option for climate change mitigation |
| VerfasserIn |
K. Becker, V. Wulfmeyer, T. Berger, J. Gebel, W. Münch |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
2190-4979
|
| Digitales Dokument |
URL |
| Erschienen |
In: Earth System Dynamics ; 4, no. 2 ; Nr. 4, no. 2 (2013-07-31), S.237-251 |
| Datensatznummer |
250017788
|
| Publikation (Nr.) |
 copernicus.org/esd-4-237-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
We present a comprehensive, interdisciplinary project which demonstrates that
large-scale plantations of Jatropha curcas – if established in hot,
dry coastal areas around the world – could capture 17–25 t of carbon
dioxide per hectare per year from the atmosphere (over a 20 yr period). Based
on recent farming results it is confirmed that the Jatropha curcas
plant is well adapted to harsh environments and is capable of growing alone
or in combination with other tree and shrub species with minimal irrigation
in hot deserts where rain occurs only sporadically. Our investigations
indicate that there is sufficient unused and marginal land for the widespread
cultivation of Jatropha curcas to have a significant impact on
atmospheric CO2 levels at least for several decades.
In a system in which desalinated seawater is used for irrigation and for
delivery of mineral nutrients, the sequestration costs were estimated to
range from 42–63 EUR per tonne CO2. This result makes carbon
farming a technology that is competitive with carbon capture and storage
(CCS). In addition, high-resolution simulations using an advanced
land-surface–atmosphere model indicate that a 10 000 km2 plantation
could produce a reduction in mean surface temperature and an onset or
increase in rain and dew fall at a regional level. In such areas, plant
growth and CO2 storage could continue until permanent woodland or forest
had been established. In other areas, salinization of the soil may limit
plant growth to 2–3 decades whereupon irrigation could be ceased and the
captured carbon stored as woody biomass. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|