Dissertation Research: Ecotone Dynamics and Landscape Response to Climate Change

论文研究：生态交错带动态和景观对气候变化的响应

• 批准号: 0105068
• 负责人: Dean Urban
• 金额: $ 1万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105068&HistoricalAwards=false
• 关键词: Dissertation; Research; Ecotone; Dynamics; Landscape

Proposal: DEB-0105068PI: Dean Urban & Todd LookingbillTitle: Dissertation Research: Ecotone Dynamics and Landscape Response to Climate ChangeAttempts to predict ecological response to global climate change must start with a comprehensive understanding of factors influencing current spatial patterns of vegetation. The proposed research examines the relationship between patterns of vegetation in old-growth forest and environmental factors likely to change under scenarios of global warming. Previous analyses have shown the need for better landscape-level estimates of fundamental environmental properties. Consequently, fine-grain measurements of temperature and moisture will be collected across an experimental watershed in the Western Cascades to address this critical need. An additional sampling effort will focus on an active area of community transition, because shifts in these transitions have been highlighted as potential early warning signs of climate change. This research will examine how temperature and moisture influence the transition from forest dominated by Tsuga heterophylla to forest dominated by Abies amabilis. Simulation models based on generated data will facilitate synthesis and identify areas of potential climatic sensitivity.

建议：Deb-0105068PI：Dean Urban；；Todd Lookingbill标题：论文研究：生态交错带动态和景观对气候变化的响应预测全球气候变化的生态响应必须从全面了解影响当前植被空间格局的因素开始。这项拟议的研究考察了在全球变暖的情况下，古老森林中的植被模式与可能发生变化的环境因素之间的关系。以前的分析表明，有必要对基本环境特性进行更好的景观水平估计。因此，将在西部喀斯喀特的一个试验性分水岭收集温度和湿度的细粒度测量数据，以满足这一关键需求。另一项抽样工作将侧重于社区转型的活跃领域，因为这些转型的转变已被强调为气候变化的潜在早期预警信号。这项研究将研究温度和水分如何影响从以铁杉为主的森林向以冷杉为主的森林的过渡。根据生成的数据建立的模拟模型将有助于综合和确定潜在的气候敏感区。