| Vegetational ecotype of the Gyirong Basin in Tibet, China and its response in stable carbon isotopes of mammal tooth enamel |
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| 引用本文： | DENGTao LIYumei. Vegetational ecotype of the Gyirong Basin in Tibet, China and its response in stable carbon isotopes of mammal tooth enamel[J]. 科学通报(英文版), 2005, 50(12): 1225-1229. DOI: 10.1007/BF03183697 |
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| 作者姓名： | DENGTao LIYumei |
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| 作者单位： | [1]InstituteofVertebratePaleontologyandPaleoanthropology,ChineseAcademyofSciences,Beijing100044,China [2]InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing100029,China |
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| 摘 要： | Carbon isotope analysis of modern herbaceous plants in the Gyirong Basin (Tibet, China) indicates that although C3 plants are dominant, C4 plants rarely comprise of the vegetation in the area at 4000 m above sea level. The C4 plants discovered in the Gyirong Basin are Salsola nepalensis of Chenopodiaceae and Pennisetum flaccidum of Gramineae, affirming that C4 plants affected by high solar gain can be distributed at high altitude, which supports the opinion that some C4 plants can exist in areas of high elevation. Carbon isotope analysis of herbivore tooth enamel from the Gyirong Basin indicates that carbon isotopes of structural carbonate in biogenic apatite at high altitude still keep a stable enrichment relationship with those of plants in their diet. Carbon isotopes in tooth enamel are therefore an accurate proxy for vegetation ecotypes and should reflect climatic and environmental features.
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| 关 键 词： | 植物 动物 碳元素 西藏高原 气候环境 |
| 收稿时间： | 2004-06-08 |
Vegetational ecotype of the Gyirong Basin in Tibet, China and its response in stable carbon isotopes of mammal tooth enamel |
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| Tao Deng,Yumei Li. Vegetational ecotype of the Gyirong Basin in Tibet, China and its response in stable carbon isotopes of mammal tooth enamel[J]. Chinese science bulletin, 2005, 50(12): 1225-1229. DOI: 10.1007/BF03183697 |
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| Authors: | Tao Deng Yumei Li |
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| Affiliation: | DENG Tao1 & LI Yumei2 1. Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China; 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Carbon isotope analysis of modern herbaceous plants in the Gyirong Basin (Tibet, China) indicates that although C3 plants are dominant, C4 plants rarely comprise of the vegetation in the area at 4000 m above sea level. The C4 plants discovered in the Gyirong Basin are Salsola nepalensis of Chenopodiaceae and Pennisetum flaccidum of Gramineae, affirming that C4 plants affected by high solar gain can be distributed at high altitude, which supports the opinion that some C4 plants can exist in areas of high elevation. Carbon isotope analysis of herbivore tooth enamel from the Gyirong Basin indicates that carbon isotopes of structural carbonate in biogenic apatite at high altitude still keep a stable enrichment relationship with those of plants in their diet. Carbon isotopes in tooth enamel are therefore an accurate proxy for vegetation ecotypes and should reflect climatic and environmental features. |
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| Keywords: | vegetation mammal carbon isotope Tibetan Plateau climate and environment. |
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