Doctoral Dissertation Research: A Multiscale Analysis of Natural and Human Influences on the Variability of Subalpine Forest Fire History in Rocky Mountain National Park
博士论文研究:自然和人类对落基山国家公园亚高山森林火灾历史变异影响的多尺度分析
基本信息
- 批准号:0327502
- 负责人:
- 金额:$ 1.2万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2003
- 资助国家:美国
- 起止时间:2003-09-01 至 2005-04-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Fire is a major ecological agent in the forests of the western United States, and as a result, it important for forest ecosystem preservation and management. Knowledge of forest fire characteristics of frequency, size, and severity, collectively referred to as the fire regime, is essential to understand and manage western forest landscapes. Researchers conduct fire history research by reconstructring past fires in order to identify fire regime specifics for a particular forest type or zone. Whereas detailed knowledge of the fire regime exists for some forest types and zones of the western United States, in the subalpine (higher elevation) forests of the Southern Rocky Mountains ranging from southern Wyoming to northern New Mexico, relatively little is know about the fire regime and the impact of human activities on the fire regime. The objectives of this doctoral dissertation research project are to address the following questions for subalpine forests: (1) What is the natural frequency, size and severity of fire events? (2) What are the influences on the fire regime at different scales, and what are the resulting spatial variations in the fire regime? (3) How and where have human fire suppression practices altered the natural fire regime? To address these questions, the student will combine dendroecological (tree-ring) and geographic information system-based methods to reconstruct the last approximately 400 years of fire history for six subalpine forest drainage basins in Rocky Mountain National Park. Spatial and temporal variations in this fire history record will be examined to determine variations at different scales as a result of influences from local topography, regional climate, and human land-use practices. These multi-scale analyses will help define the natural range of variability of fire in subalpine forests, the relative importance of influences at different scales, and human impacts on this forest ecosytem.The results of this study will advance knowledge about subalpine forest ecosystem dynamics, which is central to forest ecosystem management. Concern over excessive forest fuel accumulation as a result of fire suppression activities combined with the extensive, severe burning of the 2002 fire season and a recent dramatic increase in human population in the forested areas of the region has resulted in demand for forest management action to achieve goals of forest restoration and fire hazard mitigation. To accurately identify forest areas in need of various management actions and in order to focus limited forest management resources, detailed fire history information is needed. In the context of planning forest fire restoration and mitigation projects, this project will provide important information for decision making for both Rocky Mountain National Park and the surrounding Arapaho-Roosevelt National Forest. This project will provide an opportunity for the scientific development of two undergraduate students who will work on the project as research assistants. As a Doctoral Dissertation Research Improvement award, this award also will provide support to enable a promising student to establish a strong independent research career.
火是美国西部森林的主要生态因子,因此对森林生态系统的保护和管理具有重要意义。 森林火灾的频率,规模和严重程度,统称为火灾制度的特点的知识,是必不可少的了解和管理西部森林景观。 研究人员通过重建过去的火灾来进行火灾历史研究,以确定特定森林类型或区域的火灾状况。 虽然详细的知识存在于美国西部的一些森林类型和地区的火灾制度,在亚高山(海拔较高)的南落基山脉从南部怀俄明州到北方新墨西哥州的森林,相对较少的是知道火灾制度和人类活动对火灾制度的影响。 本博士论文的研究目的是解决以下问题的亚高山森林:(1)火灾事件的自然频率,规模和严重程度是什么? (2)在不同的尺度上,对火灾状况的影响是什么?火灾状况的空间变化是什么? (3)人类的灭火实践是如何以及在何处改变了自然火灾状况的? 为了解决这些问题,学生将结合联合收割机树木生态学(年轮)和地理信息系统为基础的方法来重建在落基山国家公园六个亚高山森林流域的火灾历史的最后约400年。 将检查火灾历史记录的空间和时间变化,以确定不同尺度的变化,作为当地地形,区域气候和人类土地利用实践的影响的结果。 这些多尺度分析将有助于定义亚高山森林火灾变异性的自然范围、不同尺度影响的相对重要性以及人类对该森林生态系统的影响。这项研究的结果将推进有关亚高山森林生态系统动态的知识,这是森林生态系统管理的核心。 人们对灭火活动造成的森林燃料过度积累感到关切,加上2002年火灾季节的大面积严重燃烧,以及最近该区域森林地区的人口急剧增加,因此需要采取森林管理行动,以实现恢复森林和减轻火灾的目标。 为了准确地确定需要采取各种管理行动的森林地区,并为了集中有限的森林管理资源,需要详细的火灾历史信息。 在规划森林火灾恢复和缓解项目的背景下,该项目将为落基山国家公园和周围的阿拉帕霍-罗斯福国家森林的决策提供重要信息。 该项目将为两名本科生的科学发展提供机会,他们将作为研究助理参与该项目。 作为博士论文研究改进奖,该奖项还将提供支持,使有前途的学生建立一个强大的独立的研究生涯。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Thomas Veblen其他文献
Thomas Veblen的其他文献
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{{ truncateString('Thomas Veblen', 18)}}的其他基金
Doctoral Dissertation Research: Assessing Regeneration Niche Limitations to Upslope Migration of Subalpine Forests
博士论文研究:评估亚高山森林上坡迁移的再生生态位限制
- 批准号:
1634163 - 财政年份:2016
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Avian Community Response to Broad-Scale Ecological Disturbances Across Spruce-Fir Forests
博士论文研究:鸟类群落对云杉-冷杉林大规模生态扰动的反应
- 批准号:
1457894 - 财政年份:2015
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Cross-Scale Assessment of Spatiotemporal Patterns and Drivers of Fire Effects in Mixed-Severity Fire Regime Forests of the Northern Rockies
博士论文研究:北落基山脉混合严重火灾区森林火灾影响的时空模式和驱动因素的跨尺度评估
- 批准号:
1302233 - 财政年份:2013
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Collaborative Research: Spruce Beetle and Wildfire Interactions Under Varying Climate in the Rockies
合作研究:落基山脉气候变化下云杉甲虫与野火的相互作用
- 批准号:
1262687 - 财政年份:2013
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Climate Variability and the Susceptibility of Engelmann Spruce to Spruce Beetle (Dendroctonus Rufipennis) Outbreaks in Northwestern Colorado
博士论文研究:科罗拉多州西北部的气候变化和英格曼云杉对云杉甲虫(Dendroctonus Rufipennis)爆发的敏感性
- 批准号:
1203204 - 财政年份:2012
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Spatial and Temporal Variability of Post-Fire Conifer Regeneration in Lower Treeline Forests of the U.S. Rocky Mountains
博士论文研究:美国落基山脉下游林线森林火灾后针叶树再生的时空变化
- 批准号:
1232997 - 财政年份:2012
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Mountain Pine Beetle and Fire Influences on the Regeneration of Lodgepole Pine in Northern Colorado
博士论文研究:山松甲虫和火灾对科罗拉多州北部黑松再生的影响
- 批准号:
1030845 - 财政年份:2010
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Wildfire Regime Shifts in Southern South America from Tree-Ring Reconstructed Fire History Networks: Climatic Controls, Land Use, and Ecological Feedbacks
南美洲南部野火制度从树轮重建火灾历史网络的转变:气候控制、土地利用和生态反馈
- 批准号:
0956552 - 财政年份:2010
- 资助金额:
$ 1.2万 - 项目类别:
Continuing Grant
Doctoral Dissertation Research: Spatio-Temporal Variability of Ponderosa Pine Susceptibility to Mountain Pine Beetle in the Colorado Front Range
博士论文研究:科罗拉多州前沿地区黄松对山松甲虫的易感性时空变化
- 批准号:
1002665 - 财政年份:2010
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
Doctoral Dissertation Research: Effects of Climate Variation on Tree Mortality Across Spatially Heterogeneous Subalpine Forest Landscapes in the Front Range of Colorado
博士论文研究:气候变化对科罗拉多州前沿地区空间异质亚高山森林景观树木死亡率的影响
- 批准号:
0825823 - 财政年份:2008
- 资助金额:
$ 1.2万 - 项目类别:
Standard Grant
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