| 项目编号: | 1636546
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| 项目名称: | Evaluating plant carbon isotope fractionation as a pCO2 proxy for the geologic record |
| 作者: | Aaron Diefendorf
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| 承担单位: | University of Cincinnati Main Campus
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| 批准年: | 2016
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| 开始日期: | 2016-09-01
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| 结束日期: | 2018-08-31
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| 资助金额: | 138189
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | plant carbon isotope
; valuable proxy
; important proxy
; geologic record
; sedimentary record
; carbon isotopic composition
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| 英文摘要: | Plant carbon isotopes preserved in the sedimentary record are valuable proxies for paleovegetation and paleoclimate in the absence of pollen or macrofossils. Plant carbon isotopes will be measured from leaf waxes preserved in a suite of samples that capture known periods of high CO2 concentration in the Eocene and Oligocene to reconcile conflicts in our understanding of the factors that influence plant carbon isotopes over geologic time.
The carbon isotopic composition of plants is used to understand past changes in environment, vegetation, and climate. This project will use the geologic record to examine changes in plant carbon isotopes during times of high atmospheric CO2. The project will benefit society by improving an important proxy for understanding Earth's past climate. In addition to training of an undergraduate and graduate student, this project will foster a broader public understanding of scientific research by expanding on current exhibits in collaboration with the Cincinnati Museum Center, a large urban cultural institution. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91241
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Aaron Diefendorf. Evaluating plant carbon isotope fractionation as a pCO2 proxy for the geologic record. 2016-01-01.
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