| 项目编号: | 1501769
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| 项目名称: | DISSERTATION RESEARCH: Plant-microbe effects on soil carbon storage in a changing global environment |
| 作者: | Sarah Hobbie
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| 承担单位: | University of Minnesota-Twin Cities
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD19760
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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: | Biological Sciences - Environmental Biology
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| 英文关键词: | soil
; carbon
; research
; environment
; soil fungus
; total soil carbon storage
; carbon storage
; plant-soil system
; doctoral dissertation improvement grant project
; ecological research
; global environment
; atmospheric carbon dioxide concentration
; opposite effect
; cycling carbon
; global change effect
; boreas environmental leadership program
; main dissertation research
; research address
|
| 英文摘要: | Our planet's environment is changing. Since the Industrial Revolution, land use change, fertilizer use, and fossil fuel combustion have increased atmospheric carbon dioxide concentrations by 40% and nitrogen inputs twelve fold. Plants and soils could either mitigate or accelerate this global change because of their role in taking up and cycling carbon and nutrients. This research addresses how one key player in plant-soil systems affects carbon storage and release. Fungi in soil connect to plant roots and transfer nutrients from the soil to the plant in exchange for carbon from the plant. However, it is unclear whether these fungi will facilitate net retention or release of carbon in the soil. On the one hand, fungi could protect carbon in soil under elevated CO2 concentrations. It is also possible that soil fungi have the opposite effect, and accelerate decomposition of carbon. This doctoral dissertation improvement grant project will test the extent to which each of these scenarios is accurate. Experiments will take place at Cedar Creek Ecosystem Science Reserve in Minnesota where the Ph.D. student has conducted her main dissertation research. Results from this research, combined with the student's ongoing work, will inform how total soil carbon storage might be affected by soil fungi in a changing global environment.
This research will not only advance understanding of global change effects on C cycling but will also provide unique educational opportunities. This award will greatly enhance the Ph.D. student's graduate training through collaboration in stable isotope analysis - a novel tool for studying flow of C through ecosystems - which would not be possible otherwise. Through performing the proposed work in collaboration with Dr. Elise Pendall (University of Western Sydney), who has significant experience with stable isotope analysis, the student will develop a strong skill set, building off her participation in the NSF-funded Stable Isotope Biogeochemistry and Ecology course at the University of Utah. Developing skills in using stable isotopes in ecological research could also generally increase the value she would bring to future collaborations. Additionally, the graduate student will leverage her ongoing leadership with the Boreas Environmental Leadership Program at the University of Minnesota's Institute on the Environment to explore new professional development opportunities for graduate students in the sciences to discuss and practice sharing their research to non-academic audiences. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94150
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Sarah Hobbie. DISSERTATION RESEARCH: Plant-microbe effects on soil carbon storage in a changing global environment. 2014-01-01.
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