RUI: An Investigation of the Environmental Forcing of Seasonal Stable-Carbon Isotopic Variation in Growth Rings of Trees

RUI：树木年轮季节性稳定碳同位素变化的环境强迫研究

• 批准号: 8906112
• 负责人: Steven Leavitt
• 金额: $ 6.57万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1990-08-16
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906112&HistoricalAwards=false
• 关键词: RUI; Investigation; Environmental; Forcing; Seasonal

Many fundamental problems remain for the stable isotopic analysis of tree rings. Although the analyses have great potential for paleoclimatic reconstructions, separating the various potential causes of isotopic change has been very difficult. Stable-carbon isotopic compositions of tree rings may be affected by many parameters, including temperature changes, growth rate, moisture availability. The PI proposes to separate these various effects by conducting a series of controlled-growth experiments and by analyzing field samples at sites where meteorological parameters are continuously monitored. This research is important because it will provide the fundamental relationships between climatic variables and tree-ring carbon isotopic composition, and it will help to develop this methodology into a new calibrated tool for paleoclimate reconstructions. This proposal has been considered under the Research at Undergraduate Institutions (RUI) program.

对于稳定同位素来说， 树木年轮分析 虽然分析结果很好， 潜在的古气候重建，分离 同位素变化的各种潜在原因已经非常 难 树木年轮的稳定碳同位素组成可能 受到许多参数的影响，包括温度变化， 生长速度，水分供应 PI建议将 这些不同的影响，通过进行一系列的控制增长 实验和分析现场的现场样本， 气象参数持续监测。 这 研究是重要的，因为它将提供基本的 气候变量与树轮碳的关系 同位素组成，这将有助于发展这一点， 方法学转化为一种新的古气候校准工具 重建。 这项建议已在 研究在本科院校（RUI）计划。