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Dissertation Research: Changes in Belowground Carbon Dynamics Under Free-Air Carbon Dioxide Enrichment (FACE)

Dissertation Research: Changes in Belowground Carbon Dynamics Under Free-Air Carbon Dioxide Enrichment (FACE)
论文研究:自由空气二氧化碳富集下地下碳动力学的变化(FACE)
批准号:
9700830
负责人:
William Schlesinger
金额:
$1.0万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1997
资助国家:
美国
项目状态:
已结题
起止时间:
1997-05-01 至 1999-04-30

项目摘要

项目成果

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中文摘要
翻译
该项目围绕北卡罗莱纳州中部杜克森林的自由空气二氧化碳富集(FACE)实验展开,旨在阐明生态系统水平大气二氧化碳富集对土壤碳动态变化的响应。为了达到这一目标,这里提出的研究旨在解决围绕过程层面对土壤功能及其与大气和地下水的联系的理解的问题。将研究进出土壤系统的碳通量,以及土壤剖面内的转移和储存。重要的是,该研究将利用稳定碳同位素(C-13)示踪剂的使用,该示踪剂将被引入二氧化碳富集的FACE地块的大气中。这种同位素示踪剂将使我们能够研究碳进入土壤有机质的速率、土壤酸度对风化速率的影响以及土壤和地下水中长期大气碳汇的潜力。这项研究对全球变化科学家和对“缺失汇”感兴趣的政策制定者、研究碳动态的土壤科学家以及对生物控制化学风化程度感兴趣的地球化学家来说特别感兴趣和重要。
英文摘要
9700830 Schlesinger This project, centered around the Free-Air Carbon dioxide Enrichment (FACE) experiment in the Duke Forest of central North Carolina, is designed to elucidate changes in soil carbon dynamics in response to an ecosystem-level atmospheric CO2 enrichment. In reaching this objective, the research proposed here is intended to address questions surrounding process-level understanding of soil function and its link with the atmosphere and groundwater. Fluxes of carbon into and out of the soil system, as well as transfers and storage within the soil profile, will be examined. Importantly, the study will capitalize on the use of stable carbon isotope (C-13) tracers that will be introduced into the atmosphere of the FACE plot with the CO2 enrichment. This isotope tracer will allow the examination of the rate of carbon incorporation into soil organic matter, the effect of soil acidity on weathering rates, and the potential of a long-term atmospheric carbon sink in soils and groundwater. This research is of particular interest and importance to global change scientists and policy-makers interested in the "missing sink", soil scientists examining carbon dynamics, and geochemists interested in the extent of biotic control over chemical weathering.
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Dissertation Research: Effects of Increasing Nitrogen Inputs on Microbial Immobilization, Soil Nitrogen Retention, and Denitrification in an Aggrading Forest Ecosystem
  • 批准号:
    0206588
  • 项目类别:
    Standard Grant
  • 资助金额:
    $1.0万
  • 财政年份:
    2002
  • 负责人:
    William Schlesinger
  • 依托单位:
Doctoral Dissertation: Soil Organic Carbon Following Deforestation in a Spatially Variable Tropical Landscape
  • 批准号:
    9972569
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.99万
  • 财政年份:
    1999
  • 负责人:
    William Schlesinger
  • 依托单位:
Nutrient Cycling in Response to Forest Growth at Elevated CO2 (FACE)
  • 批准号:
    9815350
  • 项目类别:
    Standard Grant
  • 资助金额:
    $36.84万
  • 财政年份:
    1999
  • 负责人:
    William Schlesinger
  • 依托单位:
Dissertation Research: The Effect of Cultivation on Biogeochemical Cycles and the Community Following Shifting Cultivation in West Kalimantan, Indonesia
  • 批准号:
    9623837
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.95万
  • 财政年份:
    1996
  • 负责人:
    William Schlesinger
  • 依托单位:
国内基金
海外基金
Research on Quantum Field Theory without a Lagrangian Description
  • 批准号:
    24ZR1403900
  • 项目类别:
    省市级项目
  • 资助金额:
    --
  • 批准年份:
    2024
  • 负责人:
    SATOSHI NAWATA
  • 依托单位:
Cell Research
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