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| Variation of soil △δ ~(13)C values in Xifeng loess-paleosol sequence and its paleoenvironmental implication | |
| 摘 要： | The loess-paleosol sequence on the Chinese Loess Plateau provides abundant information of paleoclimate and paleoenvironment1―3]. The carbon isotopic compo- sitions of the C3 and C4 plants are different: from ?32‰ to ?20‰ (mean value is ?27‰) for C3 p… |