International Research Fellowship Program: Depth Profile Variability in the Stable Carbon Isotopic Composition of Organic Matter from Australian Soils

国际研究奖学金计划：澳大利亚土壤有机物稳定碳同位素组成的深度剖面变化

• 批准号: 0107264
• 负责人: Jonathan Wynn
• 金额: $ 5.07万
• 依托单位: Wynn, Jonathan G
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0107264&HistoricalAwards=false
• 关键词: International; Research; Fellowship; Program; Depth

0107264WynnThe International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will provide eighteen months of support to Dr. Jonathan G. Wynn to work with Dr. Michael I. Bird at the Australian National University's Research School of Earth Sciences on the depth profile variability in the stable carbon isotopic composition of organic matter from Australian soils.The project involves the study of carbon isotopes from modern savanna soil of Australia. It will provide better constraints on variability in these ecosystems, which can be used to address issues of global change and paleoecology. Detailed depth-specific measurements will be taken of stable carbon isotope ratios in organic matter from diverse soil types of the tropical savanna biome in Australia. This research will expand the analytical tools which are currently being applied to studies of paleoenvironmental records derived from carbon isotope measurements of ancient soils, and contribute to studies of the processes controlling carbon sequestration and cycling in the terrestrial biosphere.Dr. Bird is currently active in a wide range of stable carbon isotopic research, which has centered around the study of natural and anthropogenic influences on the global carbon cycle. In addition to the high caliber research facilities, Australia has an environment which provides a wide diversity of savanna ecosystems and soil types within an accessible region ideal for this study.

0107264WYNNTHE国际研究研究员奖计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项为联合研究提供了机会，并使用独特或补充的设施，专业知识和实验条件，该奖项将为乔纳森·G·温恩（Jonathan G. Wynn）博士提供18个月的支持，以与澳大利亚国立大学研究学院的迈克尔·伯德（Michael I.澳大利亚的稀树草原土壤。 它将对这些生态系统的可变性提供更好的限制，这些生态系统可用于解决全球变化和古生态学问题。 将对澳大利亚热带稀树草原生物群落的各种土壤类型的有机物中的稳定碳同位素比进行详细的深度测量。 这项研究将扩大目前正在应用于源自古代土壤的碳同位素测量的古环境记录的研究，并有助于对陆地生物圈中控制碳固换和循环的过程进行研究。 Bird目前活跃于广泛的稳定碳同位素研究中，该研究围绕着对全球碳循环的自然和人为影响的研究。 除了高素质的研究设施外，澳大利亚还有一个环境，可在可访问区域内提供广泛的稀树草原生态系统和土壤类型。