The direct and indirect effects of plantation forestry expansion on usable water in the southeastern US

人工林扩张对美国东南部可用水的直接和间接影响

基本信息

  • 批准号:
    1344703
  • 负责人:
  • 金额:
    $ 40.12万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-06-01 至 2019-05-31
  • 项目状态:
    已结题

项目摘要

The southern United States, particularly its Southeastern region, includes some of the most intensively managed forests. Currently, planted pines are at some 40 million acres and occupy about 20 percent of entire forested area in the southern United States. Economic models predict accelerated areal expansion in pine plantations within the Southeastern US by industry and private owners, in part, due to federal policies to reduce timber harvesting from western forests. Over the last 50 years, this expansion primarily replaced natural and thus older pine forests with younger and faster growing Loblolly pines. Given the regional scale of this land-cover change, future water resources planning for the Southeastern US must account for the rapid areal expansion in pine plantation area. This project evaluates the direct effects of this rapid land-use conversion on evapotranspiration (loss of water to the atmosphere directly from the soil and through plants) and groundwater recharge, as well as its indirect effects on summertime rainfall initiation within the Southeast region. Given that forests are "first-users" of precipitated water, this direct effect can significantly alter "usable" water in the Southeastern. With regards to the indirect effects, the link between root-zone soil water and the initiation of rainfall is now attracting significant attention as potentially having a key role on the alterations brought about by the replacement of natural forests with other uses. Previous studies focused either on aboveground pathways of water movement or on below ground processes. Here, a complete soil-plant-atmosphere mathematical model is proposed to address the impacts of pine plantation expansion. The model and its various components will be evaluated individually and collectively against a number of long-term field experiments.Given the rapid growth of the human population in the southeastern US, the consequences of increased drought frequency and duration can be severe on usable water resources as trees are ?first users? of precipitated water. Hence, the broader significance of this project lies in the development of mechanistic mathematical models that can identify future vulnerabilities of water resources resulting from pine plantation expansion. This project supports a graduate student and a post-doctoral fellow, which enables integration of research and inter-disciplinary training in hydrology, ecology, and atmospheric sciences and prepares the next generation of scientists to tackle complex societal problems such as large scale land cover changes and water resources vulnerability. As a general public outreach, the project leverages recent initiatives at the North Carolina Museum of Natural Sciences that seeks to showcase museums as illuminating the intersection between scientific discovery and advancements in addressing societal problems to the public.
美国南部,特别是其东南部地区,包括一些管理最密集的森林。目前,美国南部种植的松树面积约为4000万英亩,约占整个森林面积的20%。经济模型预测,工业和私人所有者在美国东南部的松树种植园加速了面积扩张,部分原因是联邦政策减少了从西部森林中砍伐木材。在过去的50年里,这种扩张主要是用更年轻、生长更快的火炬松取代了天然的、因此更老的松林。考虑到这种土地覆盖变化的区域规模,美国东南部未来的水资源规划必须考虑到松树种植区的快速面积扩张。该项目评估了这种快速土地利用转换对蒸散(土壤和植物直接向大气流失水分)和地下水补给的直接影响,以及对东南部地区夏季降雨启动的间接影响。鉴于森林是降水的“第一使用者”,这种直接影响可以显著改变东南部的“可用”水。关于间接影响,根区土壤水分与降雨开始之间的联系现在引起了极大的关注,因为这可能对以其他用途取代天然林所带来的变化起到关键作用。以往的研究要么集中在地上水分运动途径上,要么集中在地下过程上。在这里,提出了一个完整的土壤-植物-大气数学模型来处理松林扩张的影响。该模型及其各个组成部分将根据大量长期田间试验进行单独和集体评估。鉴于美国东南部人口的快速增长,干旱频率和持续时间的增加可能会对可用水资源造成严重影响,因为树木是第一用户。沉淀出的水。因此,该项目更广泛的意义在于开发能够识别未来因松树种植扩张而导致的水资源脆弱性的机械性数学模型。该项目支持一名研究生和一名博士后研究员,使水文学、生态学和大气科学的研究和跨学科培训得以整合,并为下一代科学家解决大规模土地覆盖变化和水资源脆弱性等复杂的社会问题做好准备。作为一项广泛的公众宣传活动,该项目利用了北卡罗来纳州自然科学博物馆最近的举措,试图将博物馆展示为向公众展示科学发现与解决社会问题的进步之间的交集。

项目成果

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Gabriel Katul其他文献

Relating flow resistance to equivalent roughness
将流动阻力与等效粗糙度联系起来
  • DOI:
    10.1016/j.advwatres.2024.104855
  • 发表时间:
    2025-01-01
  • 期刊:
  • 影响因子:
    4.200
  • 作者:
    Octavia Crompton;Gabriel Katul;Sally E. Thompson
  • 通讯作者:
    Sally E. Thompson
Linking the Water and Carbon Economies of Plants in a Drying and Warming Climate
在干燥和变暖的气候下将植物的水和碳经济联系起来
  • DOI:
    10.1007/s40725-023-00202-4
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    9.5
  • 作者:
    M. Nakad;Sanna Sevanto;J. Domec;Gabriel Katul
  • 通讯作者:
    Gabriel Katul
Denoising ozone concentration measurements with BAMS filtering
  • DOI:
    10.1016/j.jspi.2005.08.016
  • 发表时间:
    2006-07-01
  • 期刊:
  • 影响因子:
  • 作者:
    Gabriel Katul;Fabrizio Ruggeri;Brani Vidakovic
  • 通讯作者:
    Brani Vidakovic
Estimating Heat Sources And Fluxes In Thermally Stratified Canopy Flows Using Higher-Order Closure Models
  • DOI:
    10.1023/a:1014526305879
  • 发表时间:
    2002-04-01
  • 期刊:
  • 影响因子:
    2.200
  • 作者:
    Mario Siqueira;Gabriel Katul
  • 通讯作者:
    Gabriel Katul

Gabriel Katul的其他文献

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{{ truncateString('Gabriel Katul', 18)}}的其他基金

Collaborative Research: CAS-MNP--Precursors of Long-Distance Aerial Transport of Microplastics from Urban Environments
合作研究:CAS-MNP——城市环境中长距离空中运输微塑料的前体
  • 批准号:
    2028633
  • 财政年份:
    2020
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Standard Grant
Collaborative Research: Ultra Fine Particle Deposition onto Vegetated Surfaces Situated on Complex Topography: From Leaf to Landscape
合作研究:复杂地形上植被表面的超细颗粒沉积:从树叶到景观
  • 批准号:
    1644382
  • 财政年份:
    2017
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Continuing Grant
Collaborative Research: Up-scaling from Leaf to Canopy the Aerosol-sized Particle Collection Mechanism Within a Non-uniform Canopy Medium
合作研究:将不均匀冠层介质中气溶胶大小的颗粒收集机制从叶子扩大到冠层
  • 批准号:
    1102227
  • 财政年份:
    2011
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Continuing Grant
Desertification risks of dryland ecosystems inferred from the dynamics of coherent spatial vegetation patterning
从相干空间植被格局的动态推断旱地生态系统的荒漠化风险
  • 批准号:
    1013339
  • 财政年份:
    2010
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Continuing Grant
CMG Collaborative Research: Multiscale Statistical Methodologies to Unravel Complexities in Atmospheric Turbulence Data
CMG 合作研究:揭示大气湍流数据复杂性的多尺度统计方法
  • 批准号:
    0724088
  • 财政年份:
    2007
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Standard Grant
Ecohydrologic Controls on Convective Rainfall Triggering and Space-Time Development
对流降雨触发和时空发展的生态水文控制
  • 批准号:
    0635787
  • 财政年份:
    2007
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Continuing Grant
De-convolving the effects of rising atmospheric CO2, solar dimming, and afforestation on usable water and carbon sequestration potential in the Southeastern U.S.
消除大气中二氧化碳含量上升、太阳变暗和植树造林对美国东南部可用水和碳封存潜力的影响
  • 批准号:
    0628432
  • 财政年份:
    2006
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Standard Grant
Bayesian Modeling in the Wavelet Domain with Applications in Atmospheric Turbulence
小波域贝叶斯建模及其在大气湍流中的应用
  • 批准号:
    0072585
  • 财政年份:
    2000
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Standard Grant
COLLABORATIVE RESEARCH: The Role of Canopy Structure on Variability of Water and Heat Fluxes from Forested Watersheds
合作研究:冠层结构对森林流域水和热通量变化的作用
  • 批准号:
    9903471
  • 财政年份:
    1999
  • 资助金额:
    $ 40.12万
  • 项目类别:
    Continuing Grant

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调查学生领袖计划的直接和间接影响
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