|
|||||
|
|
| 用树轮碳同位素年序列重建大气二氧化碳浓度 | |
| 引用本文： | 唐劲松,钱君龙,尹卓思,杨逢春. 用树轮碳同位素年序列重建大气二氧化碳浓度[J]. 南京林业大学学报(自然科学版), 2000, 24(3): 45-48 |
| 作者姓名： | 唐劲松 钱君龙 尹卓思 杨逢春 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所湖泊沉积与环境开放实验室,南京,210008 2. 南京鼓楼区园林绿化管理所 3. 浙江天目山国家自然保护区管理局 |
| 基金项目： | 国家自然科学基金资助项目! (No .497710 0 1) |
| 摘 要： | 大气圈ＣＯ２浓度及其同位素组成是不断变化的。植物在同化大气ＣＯ２过程中产生碳同位素分馏，因此，树轮中稳定碳同位素比值（＾１３Ｃ／＾１２Ｃ）不仅是重建古气候的工具，也是过去大气ＣＯ２浓度变化的敏感指标器。利用采自浙江西天目山的两株柳杉树轮稳定碳同位素（δ＾１３Ｃ）组成年序列，对１９世纪中叶以来大气ＣＯ２浓度变化进行重建，其重建值与大气ＣＯ２浓度的实测值较吻合。 |
| 关 键 词： | 树轮 稳定碳同位素 二氧化碳浓度 年轮 环境 |
Restructing CO2 Concentration by the Tree-ring Carbon Isotopic Ratios of West Tianmu Mountain |
|
| Tang Jinsong,Qian Junlong,Yin Zhuosi,Yang Fengchun. Restructing CO2 Concentration by the Tree-ring Carbon Isotopic Ratios of West Tianmu Mountain[J]. Journal of Nanjing Forestry University(Natural Sciences ), 2000, 24(3): 45-48 | |
| Authors: | Tang Jinsong Qian Junlong Yin Zhuosi Yang Fengchun |
| Affiliation: | Tang Jinsong Qian Junlong(Laboraory of Lacustrine Geomorphology and Sedimentolgy Nanjing Institute of Geography and Limnology CAS Nanjing 210008 |
| Abstract: | The stable carbon isotopic compositions of tree ring have been explored to study paleoclimatic variations, past atmospheric CO 2 level, and global carbon cycle. This paper analyzed the carbon isotopic ratios of two cryptomeria , collecting from West Tianmu Mountain, Zhejiang, and studied the tree ring carbon isotopic ratios evidence, for the atmospheric CO 2 concentration change after Industrial Revolution. The calculation of CO 2 construction fits well with the records. The tree ring carbon isotopic ratios well records the atmospheric carbon ratios change, which provides a good evidence for the CO 2 changes and a new means for the study on atmospheric CO 2 changes. |
| Keywords: | Tree ring Stable carbon isotope CO_2 concentration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |