黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

李春园; 王先彬; 陈践发; 张同伟

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黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

李春园, 王先彬, 陈践发, 张同伟

文章导航 > 沉积学报 > 1995 > 13(S1): 171-175

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

引用本文:

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

Li Chunyuan, Wang Xianbin, Chen Jianfa, Zhang Tongwei. The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO2 Concentration in Paleo-atmosphere[J]. Acta Sedimentologica Sinica, 1995, 13(S1): 171-175.

Citation:

Li Chunyuan, Wang Xianbin, Chen Jianfa, Zhang Tongwei. The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere[J]. Acta Sedimentologica Sinica, 1995, 13(S1): 171-175.

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

引用本文:

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

Citation:

黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

基金项目: SS

详细信息

作者简介:
李春园,男,副研究员,31岁,地球化学

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文章访问数: 709
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The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere

State Key Laboratory of Gas Geochemistry, Lanzhou Instituteof Geology,Chinese Academy of Sciences, Lanzhou 730000

摘要

摘要: 本文提出了利用黄土沉积物中△Ｃ的碳同位素组成估算古大气二氧化碳浓度的方法。初步的估算结果表明，利用干旱、半干旱、温度低、强蒸发及植被不发育条件下形成的地表沉积物中△Ｃ的碳同位素组成定量地估算古大气二氧化碳浓度的方法是可行的，估算结果与冰岩芯气泡组分分析结果可进行较好的对比。大气二氧化碳浓度的变化与全球性的气候波动具有同步性。
- △C /
- 碳同位素 /
- 大气二氧化碳浓度
Abstract: It has long been known that CO₂, content of the atmosphere influences temperature by determining the amount of long-wave radiation trapped in the atmosphere. Therefore, Understanding the variation of atmospheric CO₂ during Quaternary is very important for studying the influence of atmospheric CO₂ on global climatic change. UP till now the information on variation of atmospheric CO₂ during Quaternary is mainly obtained by the composition analysis of ice core.Because the longeSt cores so far obtained (1400-3000m) cover only the last 100000-160000 years, the studying on variation, of atmospheric CO₂, during Quaternary is restricted.△C is a secondary carbonate in loess sediment with a characteristic thermo-decompositon interval(500600℃). The isotopic composition characteristics and geographical distributive feature of △C suggest that AC was formed under the condition of arid or semiarid, low temperatory, high evaporation and little vegetation. Under the condition loess CO₂is mainly from atmosphere and its carbon isotopic composition is veryclose to that of atmospheric CO₂.The relationship between CO₂ content of the atmosphere and its carbon isotopic composition in northwest of China is δ¹³C=5756/[CO₂]-22. 7Replacing δ¹³C of atmospheric CO₂, with that of △C, we preliminaryly estimate the CO₂ content of the paleo-atmosphere. The results show that the CO₂content of the atmosphere from E_1-1 to S₃ranges from 311. 1 × 10^-6 to 397. 0× 10^-6and the difference between estimated values and measured values decreases with the climatic evolution from wet-warm to dry-cold.
- △C /
- Carbon Isotope /
- CO₂content of the atmosphere

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参考文献(1)

[1]

1.Catt J. A.，1988,Quaternary Geology For Scientists And Engineers. Ellis Horwood Limited, New York. Chichester.Brisbane. Toronto, 27.

2.李春园、王先彬、文启彬、邵波,1995,黄土沉积物中碳酸盐的碳、氧同位紊组成特征与古气候，中国科学((B辑).(3):318 一323。

3.Duchscherer Wm. Jr.，1982.Geochemical exploration for hydrocarbons一no new trick一but an old dog, Oil and Gas Journal. Julys. 163一176.

4.申歧祥、王先彬，1990，土城CO₂和次生碳酸盐的碳同位素地球化学特征，环境地球化学与健康，贵州科技出版社，190一193。

5.Parada C. B.，Long A. and Iavis S. N.，1983,Stable一isotopic composition of soil carbon dioxide in the Tucon basin. Ariwna, U. S. A.，Isot. Geosei.，1:219一236.

6.Rightmire C. T. , 1978, Seasonal variation in Pcoz and δ¹³C content of soil atmosphere, Water Resour. Res. , 14: 691一692.

7.Keeling C. D.1958,The concentration and isotopic abundance of atmospheric carbon dioxide in rural areas, Geochim. Cosmochim.Acta, 13:322一334.

8.张柳明、徐永昌，1992，中国西北地区大气CO₂浓度及其碳、氧同位紊组成特征，科学通报，(5):441-444。

9.Bradley R. S.，1985,Quaternary Paleoclimatology. Allen & Unurin Inc. London. 164.

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黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

基金项目: SS

作者简介:
李春园,男,副研究员,31岁,地球化学

刊出日期: 1995-12-10

关键词:

△C /

碳同位素 /

大气二氧化碳浓度

摘要: 本文提出了利用黄土沉积物中△Ｃ的碳同位素组成估算古大气二氧化碳浓度的方法。初步的估算结果表明，利用干旱、半干旱、温度低、强蒸发及植被不发育条件下形成的地表沉积物中△Ｃ的碳同位素组成定量地估算古大气二氧化碳浓度的方法是可行的，估算结果与冰岩芯气泡组分分析结果可进行较好的对比。大气二氧化碳浓度的变化与全球性的气候波动具有同步性。

English Abstract

The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere

State Key Laboratory of Gas Geochemistry, Lanzhou Instituteof Geology,Chinese Academy of Sciences, Lanzhou 730000

Publish Date: 1995-12-10

Keywords:

Abstract: It has long been known that CO₂, content of the atmosphere influences temperature by determining the amount of long-wave radiation trapped in the atmosphere. Therefore, Understanding the variation of atmospheric CO₂ during Quaternary is very important for studying the influence of atmospheric CO₂ on global climatic change. UP till now the information on variation of atmospheric CO₂ during Quaternary is mainly obtained by the composition analysis of ice core.Because the longeSt cores so far obtained (1400-3000m) cover only the last 100000-160000 years, the studying on variation, of atmospheric CO₂, during Quaternary is restricted.△C is a secondary carbonate in loess sediment with a characteristic thermo-decompositon interval(500600℃). The isotopic composition characteristics and geographical distributive feature of △C suggest that AC was formed under the condition of arid or semiarid, low temperatory, high evaporation and little vegetation. Under the condition loess CO₂is mainly from atmosphere and its carbon isotopic composition is veryclose to that of atmospheric CO₂.The relationship between CO₂ content of the atmosphere and its carbon isotopic composition in northwest of China is δ¹³C=5756/[CO₂]-22. 7Replacing δ¹³C of atmospheric CO₂, with that of △C, we preliminaryly estimate the CO₂ content of the paleo-atmosphere. The results show that the CO₂content of the atmosphere from E_1-1 to S₃ranges from 311. 1 × 10^-6 to 397. 0× 10^-6and the difference between estimated values and measured values decreases with the climatic evolution from wet-warm to dry-cold.

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

引用本文:

李春园, 王先彬, 陈践发, 张同伟. 黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算[J]. 沉积学报, 1995, 13(S1): 171-175.

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黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

作者简介:
李春园,男,副研究员,31岁,地球化学

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The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere

计量

目录

黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

作者简介:
李春园,男,副研究员,31岁,地球化学

English Abstract

The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere

State Key Laboratory of Gas Geochemistry, Lanzhou Instituteof Geology,Chinese Academy of Sciences, Lanzhou 730000

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黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

作者简介: 李春园,男,副研究员,31岁,地球化学

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The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO2 Concentration in Paleo-atmosphere

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黄土沉积物中△C的碳同位素组成与古大气二氧化碳浓度估算

中国科学院兰州地质研究所气体地球化学国家重点实验室 兰州 730000

作者简介: 李春园,男,副研究员,31岁,地球化学

English Abstract

The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO2 Concentration in Paleo-atmosphere

State Key Laboratory of Gas Geochemistry, Lanzhou Instituteof Geology,Chinese Academy of Sciences, Lanzhou 730000

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
李春园,男,副研究员,31岁,地球化学

The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere

中国科学院兰州地质研究所气体地球化学国家重点实验室兰州 730000

作者简介:
李春园,男,副研究员,31岁,地球化学

The Carbon Isotopic Composition of △C in Loess Sedimentsand the Estimating of CO₂ Concentration in Paleo-atmosphere