Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls

山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制

基本信息

  • 批准号:
    238704-2009
  • 负责人:
  • 金额:
    $ 1.75万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2012
  • 资助国家:
    加拿大
  • 起止时间:
    2012-01-01 至 2013-12-31
  • 项目状态:
    已结题

项目摘要

Although fire is a central process driving vegetation dynamics and the evolution of native species, the spatial and temporal variation in fire regimes of the mountain forests of BC is poorly understood. Fire regimes are strongly influenced by climate, fuels and humans. Climate is considered a "top-down" driver of fire regimes, influencing conditions conducive to fire at broad spatial scales and at a range of time scales from days to years to decades. Fuel availability and combustibility are "bottom-up" controls of fire and are strongly influenced by local topography such as slope aspect and elevation. Moreover, in many dry forest types, fuels have accumulated due to fire exclusion resulting from land use changes followed by fire suppression. The relative importance of top-down and bottom-up controls on fire varies geographically and by forest type, but we need further understanding of specific mechanisms, interactions and human impacts. My long-term scientific objective is to quantify the characteristics (frequency, severity, extent) of different fire regimes in mountain forests and distinguishes the relative importance of climate, fuels and human land use on those regimes. In the short-term, my graduate students and I will use dendroecological (tree-ring) reconstructions to investigate variation in fire history at multiple spatial and temporal scales in submontane (<1100 masl), montane (1100-1600masl) and subalpine (>1600 masl) forests of the southern Rocky Mountain Trench (SRMT). The objectives of our field-based research are: (1) differentiate the interacting impacts of bottom-up fuels versus top-down climate controls on historic fire frequency/severity and (2) determine the impacts of human land use on these controls. Improved understanding of the mechanisms and controls of fire regimes will allow us to predict of future fire regimes under the influence of global climate change, identify segments of the landscape significantly altered by past land use, and establish priorities and targets for ecological restoration and fuels mitigation in the wildland-urban interface, parks, and protected areas.
虽然火是驱动植被动态和本地物种的进化的一个中央过程,空间和时间的变化,在火灾制度的山地森林的BC知之甚少。火灾状况受到气候、燃料和人类的强烈影响。气候被认为是火灾状况的“自上而下”驱动因素,在广泛的空间尺度和从几天到几年到几十年的时间尺度上影响有利于火灾的条件。燃料的可用性和可燃性是“自下而上”的火灾控制,并受到当地地形的强烈影响,如坡度和海拔。此外,在许多干旱森林类型中,由于土地使用的变化以及随后的灭火而导致的防火,燃料已经积累。自上而下和自下而上控制火灾的相对重要性因地理和森林类型而异,但我们需要进一步了解具体机制、相互作用和人类影响。我的长期科学目标是量化的特点(频率,严重程度,范围)不同的火灾制度在山区森林和区分气候,燃料和人类土地使用对这些制度的相对重要性。在短期内,我和我的研究生将使用树木生态学(树轮)重建来调查南部落基山脉海沟(SRMT)的山下层(<1100 masl),山地(1100- 1600 masl)和亚高山(>1600 masl)森林在多个空间和时间尺度上的火灾历史变化。 我们的实地研究的目标是:(1)区分自下而上的燃料与自上而下的气候控制对历史火灾频率/严重性的相互影响,(2)确定人类土地利用对这些控制的影响。更好地了解火灾机制和控制,将使我们能够预测未来火灾制度的影响下,全球气候变化,确定部分景观显着改变过去的土地利用,并建立生态恢复和燃料缓解的优先事项和目标在荒地城市界面,公园和保护区。

项目成果

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Daniels, Lori其他文献

Can Air Quality Management Drive Sustainable Fuels Management at the Temperate Wildland-Urban Interface?
  • DOI:
    10.3390/fire1020027
  • 发表时间:
    2018-09-01
  • 期刊:
  • 影响因子:
    3.2
  • 作者:
    Bowman, David;Daniels, Lori;Henderson, Sarah
  • 通讯作者:
    Henderson, Sarah
Smoking is associated with increased risk of cardiovascular events, disease severity, and mortality among patients hospitalized for SARS-CoV-2 infections.
  • DOI:
    10.1371/journal.pone.0270763
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Poudel, Ram M.;Daniels, Lori;DeFilippis, Andrew J.;Hamburg, Naomi;Khan, Yosef C.;Keith, Rachel;Kumar, Revanthy Sampath;Strokes, Andrew;Robertson, Rose Marie;Bhatnagar, Aruni
  • 通讯作者:
    Bhatnagar, Aruni

Daniels, Lori的其他文献

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{{ truncateString('Daniels, Lori', 18)}}的其他基金

Forest resilience in the 21st century: Adapting to altered fire regimes and climate change
21 世纪的森林恢复能力:适应改变的火灾状况和气候变化
  • 批准号:
    RGPIN-2020-06310
  • 财政年份:
    2022
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Forest resilience in the 21st century: Adapting to altered fire regimes and climate change
21 世纪的森林恢复能力:适应改变的火灾状况和气候变化
  • 批准号:
    RGPIN-2020-06310
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Forest resilience in the 21st century: Adapting to altered fire regimes and climate change
21 世纪的森林恢复能力:适应改变的火灾状况和气候变化
  • 批准号:
    RGPIN-2020-06310
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Have Altered Fire Regimes Reduced Forest Resilience to Climate Change?
火灾制度的改变是否降低了森林对气候变化的适应能力?
  • 批准号:
    RGPIN-2014-06387
  • 财政年份:
    2018
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Are productive yellow-cedar forests showing early signs of decline on Haida Gwaii?
海达瓜伊多产的黄雪松森林是否显示出衰退的早期迹象?
  • 批准号:
    513627-2017
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Engage Plus Grants Program
Have Altered Fire Regimes Reduced Forest Resilience to Climate Change?
火灾制度的改变是否降低了森林对气候变化的适应能力?
  • 批准号:
    RGPIN-2014-06387
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Have Altered Fire Regimes Reduced Forest Resilience to Climate Change?
火灾制度的改变是否降低了森林对气候变化的适应能力?
  • 批准号:
    RGPIN-2014-06387
  • 财政年份:
    2016
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Have Altered Fire Regimes Reduced Forest Resilience to Climate Change?
火灾制度的改变是否降低了森林对气候变化的适应能力?
  • 批准号:
    RGPIN-2014-06387
  • 财政年份:
    2015
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Have Altered Fire Regimes Reduced Forest Resilience to Climate Change?
火灾制度的改变是否降低了森林对气候变化的适应能力?
  • 批准号:
    RGPIN-2014-06387
  • 财政年份:
    2014
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls
山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
  • 批准号:
    238704-2009
  • 财政年份:
    2013
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual

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  • 批准号:
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Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls
山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
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    238704-2009
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  • 批准号:
    435185-2012
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山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
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    238704-2009
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Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls
山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
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Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls
山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
  • 批准号:
    238704-2009
  • 财政年份:
    2009
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Fire regimes in mountain landscapes and global environmental change: top-down versus bottom-up controls
山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
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山地景观中的火灾状况和全球环境变化:自上而下与自下而上的控制
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