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Hafner, Silke ; Unteregelsbacher, Sebastian ; Seeber, Elke ; Becker, Lena ; Xu, Xingliang ; Li, Xiaogang ; Guggenberger, Georg ; Miehe, Georg ; Kuzyakov, Yakov:
Effect of grazing on carbon stocks and assimilate partitioning in a Tibetan montane pasture revealed by ¹³CO₂ pulse labeling.
In: Global Change Biology.
Bd. 18
(2012)
Heft 2
.
- S. 528-538.
ISSN 1365-2486
DOI: https://doi.org/10.1111/j.1365-2486.2011.02557.x
Abstract
Since the late 1950s, governmental rangeland policies have changed the grazing management on the Tibetan Plateau (TP). Increasing grazing pressure and, since the 1980s, the privatization and fencing of pastures near villages has led to land degradation, whereas remote pastures have recovered from stronger overgrazing. To clarify the effect of moderate grazing on the carbon (C) cycle of the TP, we investigated differences in below-ground C stocks and C allocation using in situ13CO2 pulse labeling of (i) a montane Kobresia winter pasture of yaks, with moderate grazing regime and (ii) a 7-year-old grazing exclosure plot, both in 3440 m asl. Twenty-seven days after the labeling, 13C incorporated into shoots did not differ between the grazed (43% of recovered 13C) and ungrazed (38%) plots. In the grazed plots, however, less C was lost by shoot respiration (17% vs. 42%), and more was translocated below-ground (40% vs. 20%). Within the below-ground pools, http://dx.doi.org/10.1111/j.1365-2486.2011.02557.x
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER104509 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 14 Jul 2015 06:20 |
| Letzte Änderung: | 16 Nov 2023 10:34 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/16256 |