Critical Zone Observatory for Intensively Managed Landscapes (IML-CZO)

集约管理景观关键区观测站 (IML-CZO)

• 批准号: 1331906
• 负责人: Praveen Kumar
• 金额: $ 490万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-12-01 至 2021-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1331906&HistoricalAwards=false
• 关键词: Critical; Zone; Observatory; Intensively; Managed

Critical Zone Observatory for Intensively Managed Landscapes (IML-CZO)Intensively managed landscapes, regions of significant land use change, serve as a cradle for economic prosperity. However, the intensity of change is responsible for unintended deterioration of our land and water environments. By understanding present day dynamics in the context of long-term co-evolution of the landscape, soil and biota, IML-CZO aims to support the assessment of short- and long-term resilience of the crucial ecological, hydrological and climatic services. These include freshwater quality and quantity, provision for food, fiber and (bio)fuel, nutrient transformations, and terrestrial carbon storage. The goals of this project are to quantify the fluxes and transformations, as well as interactions, thresholds, and dynamic feedbacks of water, nutrients, and sediment in IMLs, and to characterize how rapid land use changes have altered the vulnerability and resilience of these systems. An observational network of two sites in Illinois (3,690-km2 Upper Sangamon River Basin) and Iowa (270-km2 Clear Creek Watershed), and a partner site in Minnesota (44,000-km2 Minnesota River Basin), which together capture a range of geological diversity of the low relief glaciated and tile-drained landscape in the Midwest, will drive the scientific and technological advances. The guiding hypothesis for the scientific effort is that through human modification, the critical zone of IMLs has passed a tipping point (or threshold) and has changed from being a transformer of material flux, with high nutrient, water, and sediment storage, to being a transporter. This change threatens the resilience of the landscape to accommodate future impacts associated with ongoing human activity, including climate change and bioenergy crop production. Further, it increases the vulnerability of IMLs by compromising the sustainability of key critical-zone services on which ecological systems and human populations depend. Understanding and quantifying shifts in the response of the critical zone to human development remains a challenge, and current assessments are at best qualitative. IML-CZO research will identify threats to resilience of the critical zone, and will also inform management strategies aimed at reducing the vulnerability of the system to human activities that threaten sustainability. We will develop methods and knowledgebase that are broadly applicable across the Midwest and similar low-gradient landscapes worldwide. The project will provide leadership in developing the next generation of work force and informing sustainable management strategies. The IML-CZO will be a launch pad for several new educational and outreach initiatives, and it will be an integral resource to connect and partner with existing organizations. It will draw on and add to several resources and programs available throughout the region. The CZO will provide a testbed for student-led sensing and data collection initiatives, and is expected to stimulate new research ideas and further advance the sensors and measurements curriculum. The CZO will also work to bring together collaborations with National Great Rivers Research and Education Center, IOWATER, Minnesota and Illinois RiverWatch Volunteer programs to enlist "citizen scientist" (age 10 - 70) in the work of the CZO. IML-CZO will also serve as a training ground for several undergraduate and graduate students, and post-doctoral research associates by engaging them in interdisciplinary research.

密切管理的景观（IML-CZO）的关键区域天文台强化管理的景观，重大土地使用变化的地区，是经济繁荣的摇篮。但是，变化的强度负责我们的土地和水环境的意外恶化。通过在景观，土壤和生物群的长期共同发展的背景下了解当今的动态，IML-CZO旨在支持评估对重要生态，水文和气候服务的短期和长期韧性的评估。其中包括淡水质量和数量，食品提供，纤维和（生物）燃料，养分转化以及陆生碳存储。该项目的目标是量化IML中水，养分和沉积物的相互作用，阈值和动态反馈，并表征土地使用变化如何改变这些系统的脆弱性和弹性。 An observational network of two sites in Illinois (3,690-km2 Upper Sangamon River Basin) and Iowa (270-km2 Clear Creek Watershed), and a partner site in Minnesota (44,000-km2 Minnesota River Basin), which together capture a range of geological diversity of the low relief glaciated and tile-drained landscape in the Midwest, will drive the scientific and技术进步。科学努力的指导假设是，通过人类的修改，IML的关键区域已经通过了临界点（或阈值），并且已经从成为材料通量的变压器变化，具有高营养，水和沉积物储存，转变为转运蛋白。这种变化威胁着景观的弹性，以适应与持续的人类活动相关的未来影响，包括气候变化和生物能源作物的生产。此外，它通过损害了生态系统和人类人群所依赖的关键关键关键区域服务的可持续性，从而增加了IML的脆弱性。了解和量化关键区域对人类发展的反应的转变仍然是一个挑战，目前的评估充其量是定性的。 IML-CZO研究将确定对关键区域的弹性的威胁，还将为旨在减少系统脆弱性的管理策略提供信息，以威胁可持续性。我们将开发在全球中西部和类似的低梯度景观中广泛适用的方法和知识基础。该项目将在发展下一代劳动力并告知可持续管理策略方面提供领导地位。 IML-CZO将是一些新的教育和外展计划的发射台，它将成为与现有组织建立联系和合作的组成资源。它将利用并添加到整个地区可用的几个资源和程序中。 CZO将为学生主导的传感和数据收集计划提供测试台，并有望刺激新的研究思想并进一步推进传感器和测量课程。 CZO还将努力与国家大河研究和教育中心，爱荷华州，明尼苏达州和伊利诺伊州河沃特志愿计划进行合作，以招募“公民科学家”（10-70岁）在CZO的工作中。 IML-CZO还将作为几位本科生和研究生的培训理由，并通过使他们参与跨学科研究，并在博士后研究中心。

项目成果

Numerical modeling of groundwater‐driven stream network evolution in low‐relief post‐glacial landscapes

冰川后低洼地貌中地下水驱动的河流网络演化的数值模拟

• DOI: 10.1002/esp.5278
• 发表时间: 2021
• 期刊: Earth Surface Processes and Landforms
• 影响因子: 3.3
• 作者: Cullen, Cecilia;Anders, Alison M.;Lai, Jingtao;Druhan, Jennifer L.
• 通讯作者: Druhan, Jennifer L.