Dendrochronological and Stable Isotope Studies of Tree-Rings for Selected Areas of the United States

美国选定地区树木年轮的树木​​年代学和稳定同位素研究

• 批准号: 9628759
• 负责人: Xiahong Feng
• 金额: $ 24.09万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628759&HistoricalAwards=false
• 关键词: Dendrochronological; Stable; Isotope; Studies; Tree

Abstract ATM-9628759 Feng, Xiahong Dartmouth College Title: Dendrochronological and Stable Isotope Studies of Tree-Rings for Selected Areas of the United States Tree-ring techniques have been increasingly used for climate and paleoecological studies with time scales of hundreds to thousands of years. The record of stable isotopes in tree-rings may provide detailed information about present and past climate. This project is designed to study the climatic implications of stable isotopes in annual tree-rings and to address the basic analytical and interpretive issues related to this methodology. This award will address the signal-to-noise ratios of the isotopic records and the fundamental question of replication: can reasonably homogenous hydrogen and oxygen isotope chronologies be developed from several trees at a single site? The project will also focus on the effects of tree age and microenvironment on the derivation of climatically- sensitive isotope chronologies.

摘要ATM-9628759 Feng，Xiahong Dartmouth College标题：越来越多地使用了数百至千年的时间尺度，用于气候和古生物学研究，用于美国树环技术的树环的树木学和稳定的同位素研究。树木环中稳定的同位素的记录可能会提供有关当前和过去气候的详细信息。 该项目旨在研究稳定同位素在年度树环中的气候含义，并解决与该方法相关的基本分析和解释性问题。 该奖项将解决同位素记录的信噪比和复制的基本问题：是否可以从单个地点的几棵树中开发出合理同质的氢和氧同位素年表？ 该项目还将集中于树时代和微环境对气候敏感同位素年表的推导的影响。