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| 论文编号: |
132 |
| 论文题目: |
y Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake |
| 英文论文题目: |
y Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake |
| 第一作者: |
Zeng, FM |
| 英文第一作者: |
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| 联系作者: |
Zeng Fangming |
| 英文联系作者: |
Zeng Fangming |
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| 发表年度: |
2017 |
| 卷: |
28 |
| 期: |
3 |
| 页码: |
484-491 |
| 摘要: |
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| 英文摘要: |
Total organic carbon (TOC) in lake sediments and its stable carbon isotope (delta C-13(org)) are widely applied to investigate paleoenvironmental changes even though their implications are complicated and multi -explanatory. Organic geochemistry studies of lake sediments from Qinghai Lake have been investigated, but some interpretations are controversial. In this study, TOC of one Holocene eolian section and delta C-13(org) of three eolian sections were studied around Qinghai Lake. Results indicate that the TOC content in eolian deposits was low during the Early Holocene, and gradually increased to high values during the Middle and Late Holocene. The variation in TOC content of eolian deposits is different from that in the lacustrine sequence from Qinghai Lake during the Holocene. The delta C-13(org) values in the eolian sections were relatively stable, with oscillation amplitudes of similar to 4 parts per thousand (ranging from -25.8 parts per thousand to -22.1 parts per thousand), in contrast to similar to 10 parts per thousand variations in delta C-13(org) values (varying from -30 parts per thousand to -20 parts per thousand) in lacustrine sediments. Through comparison of TOC and delta C-13(org) values between eolian deposits and lacustrine sediments, we can confirm indications that the organic matter in Qinghai Lake sediments during the Holocene was primarily a contribution of the aquatic species in the lake. This is significant for understanding the origin of organic matter in lake sediments on the northeastern Qinghai -Tibetan Plateau and for paleoenvironmental inferences using such proxies. |
| 刊物名称: |
JOURNAL OF EARTH SCIENCE |
| 英文刊物名称: |
JOURNAL OF EARTH SCIENCE |
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