Back to Search
Start Over
Variation of terrestrial ecosystem recorded by stable carbon isotopes of fossils in northern China during the Quaternary
- Source :
- Chinese Science Bulletin. 47:76
- Publication Year :
- 2002
- Publisher :
- Science China Press., Co. Ltd., 2002.
-
Abstract
- Stable carbon isotopes of C3 and C4 plants have completely distinct δ13C values respectively. Carbonate in tooth enamel of herbivorous mammals is significantly and regularly enriched in 13C compared to source carbon. As a result, we can reconstruct distributions of C3 and C4 plants in geological history based on carbon isotopes of mammalian tooth enamel. Carbon isotopes of 70 mammalian tooth enamel samples from 11 Quaternary localities in northern China are analyzed. This analysis indicates that C3 plants were dominant in the terrestrial ecosystem of northern China during the Quaternary, which is completely different from Pakistan with relatively close latitudes where C4 plants were absolutely dominant. The great difference was caused by the uplift of the Tibetan Plateau. A simulation implied that a marked temperature decrease would happen in the north side of the Tibetan Plateau, but a temperature increase in the south side. The warming condition caused the transition from C3 to C4 plants in Pakistan situated in the south side of this plateau. In the north side, on the contrary, the cooling condition restrained the distribution of C4 plants. As a result, C3 plants have been dominant in northern China until now.
- Subjects :
- Herbivore
geography
Multidisciplinary
Plateau
geography.geographical_feature_category
δ13C
Earth science
fungi
food and beverages
chemistry.chemical_element
chemistry.chemical_compound
Paleontology
stomatognathic system
chemistry
Isotopes of carbon
Carbonate
Terrestrial ecosystem
Quaternary
Carbon
Geology
Subjects
Details
- ISSN :
- 10016538
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Chinese Science Bulletin
- Accession number :
- edsair.doi...........067bae18ba336b0d521433209307b4ae