The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils

扰动对北方森林土壤碳生物地球化学循环的影响

基本信息

  • 批准号:
    RGPIN-2016-03997
  • 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:
    2017
  • 资助国家:
    加拿大
  • 起止时间:
    2017-01-01 至 2018-12-31
  • 项目状态:
    已结题

项目摘要

Forest harvesting and wildfire disturb the carbon cycle in the soils of the boreal forest in fundamentally different ways. During harvesting mechanical disturbance physically mixes organic matter from the organic layer into the mineral soil while combustion of the organic layer in a fire chemically transforms organic matter and produces ash and char that increases the pH and releases nutrients. Despite the widespread occurrence of fire and harvesting, there are few investigations comparing the effects of fire and harvesting on the carbon cycle in the soil, and fewer still that consider the entire soil profile. Findings from the few available studies indicate that SOC stored below 30 cm in harvested forests increases significantly in the years immediately following disturbance and declines through time. Is this carbon transported from the surface, in what form and at what rate? Is it mineralized in situ or does it get exported from the system? In fire affected forests, transport of surface organic matter appears to be limited to the A horizon, which is surficial and typically thin. Why?
森林采伐和野火以根本不同的方式扰乱北方森林土壤中的碳循环。在收获过程中,机械扰动将有机层中的有机物物理混合到矿物质土壤中,而有机层在火中的燃烧使有机物发生化学转化,产生灰烬和焦炭,从而增加pH值并释放营养物质。尽管火灾和收获的广泛发生,有几个调查比较火灾和收获对土壤中的碳循环的影响,更少的是,考虑到整个土壤剖面。现有的几项研究结果表明,SOC存储低于30厘米的采伐森林显着增加,在几年后立即干扰和下降。这些碳是以什么形式、以什么速度从地表转移过来的?它是在原地矿化的还是从系统中输出的?在火灾影响的森林,运输的表面有机物似乎是有限的A层,这是survival和典型的薄。为什么?为什么?

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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Diochon, Amanda其他文献

Natural abundance measurements of 13C indicate increased deep soil carbon mineralization after forest disturbance
  • DOI:
    10.1029/2008gl034795
  • 发表时间:
    2008-07-31
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Diochon, Amanda;Kellman, Lisa
  • 通讯作者:
    Kellman, Lisa
Short-term effects of wood ash application on soil properties, growth, and foliar nutrition of Picea mariana and Picea glauca seedlings in a plantation trial
  • DOI:
    10.1139/cjss-2020-0105
  • 发表时间:
    2021-06-01
  • 期刊:
  • 影响因子:
    1.7
  • 作者:
    Couch, Robin L.;Luckai, Nancy;Diochon, Amanda
  • 通讯作者:
    Diochon, Amanda

Diochon, Amanda的其他文献

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{{ truncateString('Diochon, Amanda', 18)}}的其他基金

The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils
扰动对北方森林土壤碳生物地球化学循环的影响
  • 批准号:
    RGPIN-2022-05085
  • 财政年份:
    2022
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils
扰动对北方森林土壤碳生物地球化学循环的影响
  • 批准号:
    RGPIN-2016-03997
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Which approach makes the most cents? Evaluating the effect of land conversion practices on soil health and yields of barley and oats
哪种方法最赚钱?
  • 批准号:
    549567-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Alliance Grants
Optimizing the ratio of paper mill biosolids and wood ash for a soil amendment to maximize yield and soil quality
优化土壤改良剂中造纸厂生物固体和木灰的比例,以最大限度地提高产量和土壤质量
  • 批准号:
    549918-2020
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Alliance Grants
Which approach makes the most cents? Evaluating the effect of land conversion practices on soil health and yields of barley and oats
哪种方法最赚钱?
  • 批准号:
    549567-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Alliance Grants
The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils
扰动对北方森林土壤碳生物地球化学循环的影响
  • 批准号:
    RGPIN-2016-03997
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils
扰动对北方森林土壤碳生物地球化学循环的影响
  • 批准号:
    RGPIN-2016-03997
  • 财政年份:
    2019
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
The effect of disturbance on the biogeochemical cycling of carbon in northern forest soils
扰动对北方森林土壤碳生物地球化学循环的影响
  • 批准号:
    RGPIN-2016-03997
  • 财政年份:
    2018
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Bridging ways of knowing over water
架起了解水的桥梁
  • 批准号:
    501675-2016
  • 财政年份:
    2018
  • 资助金额:
    $ 1.75万
  • 项目类别:
    PromoScience
Bridging ways of knowing over water
架起了解水的桥梁
  • 批准号:
    501675-2016
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    PromoScience

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