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| Titel |
Changes in C3/C4 vegetation in the continental interior of the Central Himalayas associated with monsoonal paleoclimatic changes during the last 600 kyr |
| VerfasserIn |
M. Mampuku, T. Yamanaka, M. Uchida, R. Fujii, T. Maki, H. Sakai |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 4, no. 1 ; Nr. 4, no. 1 (2008-01-02), S.1-9 |
| Datensatznummer |
250001506
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| Publikation (Nr.) |
 copernicus.org/cp-4-1-2008.pdf |
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| Zusammenfassung |
| A continuous lacustrine sediment core obtained from the Kathmandu Valley in
the Central Himalayas revealed that cyclical changes in C3/C4
vegetation corresponded to global glacial-interglacial cycles from marine
isotope stages (MIS) 15 to MIS 4. The C3/C4 vegetation shifts were
reconstructed from significant changes in the δ13C values of
bulk organic carbon. Glacial ages were characterized by significant 13C
enrichment, due to the expansion of C4 plants, attributed to an
intensification of aridity. Thus, the southwest (SW) summer monsoon, which
brings the majority of rainfall to the Central Himalayan southern slopes,
would have been weaker. Marine sediment cores from the Indian Ocean and
Arabian Sea have demonstrated a weaker SW monsoon during glacial periods,
and our results confirm that arid conditions and a weak SW monsoon prevailed
in the continental interior of the Central Himalayas during glacial ages.
This study provides the first continuous record for the continental interior
of paleoenvironmental changes directly influenced by the Indian monsoon. |
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