RAPID: Fire Effects on Soil and Aquatic Organic Matter in a Southern Appalachian Hardwood Forest.

快速:火灾对阿巴拉契亚南部阔叶林土壤和水生有机物的影响。

基本信息

  • 批准号:
    1733885
  • 负责人:
  • 金额:
    $ 15.95万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2017
  • 资助国家:
    美国
  • 起止时间:
    2017-03-01 至 2019-02-28
  • 项目状态:
    已结题

项目摘要

The effects of forest fires are often thought of in terms acreage of trees lost or impacts on wildlife. But fires can also have an important influence the amount, kinds, and transport of organic matter that is in forest soil, with potentially large ramifications for forest productivity. However, studying the effects of wildfire is very difficult due to the rapid post-fire changes to the environment and often the lack of robust pre-fire data in locations that have recently burned. This project will take advantage of data on soil organic carbon collected prior to and immediately after the recent fire in the Great Smokey Mountains National Park to examine immediate post-fire effects on organic carbon cycling across the terrestrial-aquatic interface. The fire burned two sites with the park that are part of the National Ecological Observatory Network so it will be possible to couple a detailed pre-fire assessment of soil carbon with post-fire changes in the same locations. In doing so, this project will fill in gaps in our understanding of how fire affects forest ecosystems in the Eastern United States.Fire introduces a spectrum of thermally-altered carbon (C) such as black C (condensed-aromatic residue produced from incomplete combustion of organic matter), poly-aromatic hydrocarbons (PAHs), and low molecular weight organic acids (LMWOA) to terrestrial, atmospheric, and aquatic systems. This thermally-altered material can have important effects on quantity and quality of soil organic matter (SOM) as well as terrestrial and aquatic ecosystem function. The effects of fire on soil stocks and quality of dissolved organic matter (DOM) are poorly understood, however many streams have higher DOM concentrations post-fire, suggesting that soil concentrations of DOM increase and are mobile within the soil profile. Several pathways are available to this highly labile, hydrophilic DOC, including: (1) efficient transport to a stream where it may become an important source of carbon to aquatic organisms; and (2) efficient transport to deeper parts of the soil profile where naked mineral surfaces dominate and the sorptive capacity is highest and therefore this material can be sequestered as deep soil carbon. The partitioning of DOC between these pathways has important implications for predicting the impacts of fire on ecosystem function and services including, drinking water quality and soil carbon sequestration. The process of post-fire incorporation of these solid residues can be quite rapid but remains poorly understood. This work represents one of the first studies to examine the immediate post-fire dynamics of both particulate and dissolved classes of thermally-altered C in adjoining soils and aquatic systems.
森林火灾的影响通常被认为是树木损失面积或对野生动物的影响。 但火灾也会对森林土壤中有机物的数量、种类和运输产生重要影响,并可能对森林生产力产生重大影响。 然而,研究野火的影响是非常困难的,因为火灾后环境的迅速变化,以及最近燃烧的地点往往缺乏可靠的火灾前数据。该项目将利用最近在大烟山国家公园发生火灾之前和之后立即收集的土壤有机碳数据,研究火灾后对陆地-水生界面有机碳循环的直接影响。大火烧毁了公园的两个地点,这两个地点是国家生态观测站网络的一部分,因此可以将火灾前对土壤碳的详细评估与火灾后相同地点的变化结合起来。 在此过程中,该项目将填补我们对火灾如何影响美国东部森林生态系统的理解的空白。火灾将一系列热改变的碳(C),如黑C(有机物质不完全燃烧产生的浓缩芳香残留物),多环芳烃(PAH)和低分子量有机酸(LMWOA)引入陆地,大气和水生系统。这种热蚀变物质对土壤有机质(SOM)的数量和质量以及陆地和水生生态系统功能具有重要影响。火对土壤储量和溶解性有机质(DOM)的质量的影响知之甚少,但许多流有较高的DOM浓度火灾后,这表明,DOM的土壤浓度增加,并在土壤剖面内移动的。这种高度不稳定的亲水性DOC有几种途径,包括:(1)有效运输到河流中,在那里它可能成为水生生物的重要碳源;(2)有效运输到土壤剖面的较深部分,裸露的矿物表面占主导地位,吸附能力最高,因此这种材料可以作为深层土壤碳被隔离。DOC在这些途径之间的分配对于预测火灾对生态系统功能和服务的影响具有重要意义,包括饮用水质量和土壤固碳。火灾后这些固体残留物的合并过程可能相当迅速,但仍然知之甚少。这项工作是第一个研究,以检查火灾后立即动态的颗粒和溶解类的热改变C在相邻的土壤和水生系统。

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)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Jeff Hatten其他文献

Estimation of dynamic load of mercury in a river with BASINS-HSPF model
  • DOI:
    10.1007/s11368-011-0426-4
  • 发表时间:
    2011-09-20
  • 期刊:
  • 影响因子:
    3.000
  • 作者:
    Ying Ouyang;John Higman;Jeff Hatten
  • 通讯作者:
    Jeff Hatten

Jeff Hatten的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Jeff Hatten', 18)}}的其他基金

Determining how Organic Matter is Stabilized using a Unique Set of Soil Samples from across the U.S.
使用来自美国各地的一组独特的土壤样本确定如何稳定有机物
  • 批准号:
    1340504
  • 财政年份:
    2014
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Continuing Grant

相似海外基金

RAPID: Effects of changing wildfire regimes on soil carbon fluxes during and following fire
RAPID:改变野火状况对火灾期间和火灾后土壤碳通量的影响
  • 批准号:
    2420420
  • 财政年份:
    2024
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Standard Grant
FIRE-Diet: Food as an Intervention to Reduce the Effects of Woodsmoke Exposure on Respiratory Health
火饮食:通过食物干预来减少木烟暴露对呼吸系统健康的影响
  • 批准号:
    479179
  • 财政年份:
    2023
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Operating Grants
Collaborative Research: Integrative Approach to Understanding the Emergence of Alternate Social Phenotypes through Greenbeard Effects in the Fire Ant
合作研究:通过火蚁绿胡子效应理解替代社会表型出现的综合方法
  • 批准号:
    2310983
  • 财政年份:
    2023
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Standard Grant
Collaborative Research: Integrative Approach to Understanding the Emergence of Alternate Social Phenotypes through Greenbeard Effects in the Fire Ant
合作研究:通过火蚁绿胡子效应理解替代社会表型出现的综合方法
  • 批准号:
    2310984
  • 财政年份:
    2023
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Standard Grant
Quantification of fire effects and post-fire dynamics
火灾影响和火灾后动态的量化
  • 批准号:
    RGPIN-2016-04242
  • 财政年份:
    2022
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Discovery Grants Program - Individual
Fire and rain: A new collaboration on the effects of fire on storm runoff in Spain and British Columbia
火与雨:关于西班牙和不列颠哥伦比亚省火灾对风暴径流影响的新合作
  • 批准号:
    577618-2022
  • 财政年份:
    2022
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Alliance Grants
Quantification of fire effects and post-fire dynamics
火灾影响和火灾后动态的量化
  • 批准号:
    RGPIN-2016-04242
  • 财政年份:
    2021
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Discovery Grants Program - Individual
Fire severity: effects on soil fungal communities
火灾严重程度:对土壤真菌群落的影响
  • 批准号:
    563374-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 15.95万
  • 项目类别:
    University Undergraduate Student Research Awards
Drivers of seasonal variation in fire effects on tree crowns
火灾对树冠影响的季节性变化的驱动因素
  • 批准号:
    563518-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 15.95万
  • 项目类别:
    University Undergraduate Student Research Awards
Effects of fire-grazing interaction on habitat heterogeneity and biodiversity in northern mixed grass prairie
火放牧相互作用对北部混草草原生境异质性和生物多样性的影响
  • 批准号:
    565878-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 15.95万
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了