Collaborative Research: A Geospatial Approach to Dendroclimatology of Multi-Millennial Bristlecone Pine

合作研究：千年狐尾松树木气候学的地理空间方法

• 批准号: 0629172
• 负责人: Andrew Bunn
• 金额: $ 4.79万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0629172&HistoricalAwards=false
• 关键词: Collaborative; Research; Geospatial; Approach; Dendroclimatology

Funding is provided to integrate topography into dendroclimatological analyses to better account for the effects of elevation on the climate signal recorded in trees. The researchers will use bristlecone, and other pines, from between 2800-3600 meters above sea level in the semi-arid southwest United States as the database for this research because an existing network of well-replicated chronologies already exists and these species are among the longest living trees. Specifically, the researchers will look for topographic modification of tree-ring response to climate variability along elevation transects and apply process-based modeling to the formation of tree rings from living and relict wood below and above the present limit of tree growth in eastern California, Nevada, and the Four-Corners States. The scientific goals of the research include examining the influences of differing climate variables on the growth of the old trees and evaluating the implications of the research results on the utility of tree-ring records as natural archives of climate information. The research aims to address important issues regarding the factors underlying past climate variability and the implications for understanding future variability. The research will examine present climate variability (e.g., recent droughts) in a multi-millennial perspective as well as providing a potentially important and unique tool for investigating the causes of extreme climate events. The bristlecone tree-ring records are at the center of the scientific controversy concerning the reconstruction of Northern Hemispheric temperature from recent centuries and the work should help better inform this debate. The researchers plan to spin off student research projects through a summer internship program. In addition, the research will provide information for an exhibit, highlighting bristlecone pine research, at the US Forest Service Visitor Center in the Inyo National Forest.

提供资金来将地形整合到树突气候分析中，以更好地说明高程对树木中记录的气候信号的影响。 研究人员将使用Bristlecone和其他松树，从半干旱西南美国的海拔2800-3600米处用作这项研究的数据库，因为现有的已恢复时间表的现有网络已经存在，并且这些物种是最长的生物之一。 具体而言，研究人员将寻找对沿高程横除气候变异性的树木环响应的地形修饰，并将基于过程的建模应用于从生存和遗物的树环的形成，而在加利福尼亚州东部，内华达州和四个角色州的树木生长限制以下和之上。 该研究的科学目标包括研究不同气候变量对旧树木生长的影响，并评估研究结果对树环记录的效用作为气候信息的自然档案。该研究旨在解决有关过去气候变异性基础因素的重要问题，以及对未来可变性的影响。 该研究将在多千年的角度研究当前的气候变异性（例如，最近的干旱），并提供了一种潜在的重要且独特的工具来研究极端气候事件的原因。 毛龙树环记录是关于从最近几个世纪开始重建北半球温度的科学争议的中心，这项工作应有助于更好地告知这场辩论。 研究人员计划通过暑期实习计划启动学生研究项目。 此外，该研究还将在Inyo National Forest的美国森林服务游客中心（Inyo National Forest）提供展览的信息，并强调Bristlecone Pine Research。