WSC-Category 2, Collaborative: Climate and human dynamics as amplifiers of natural change: a framework for vulnerability assessment and mitigation planning

WSC-类别 2，协作：气候和人类动态作为自然变化的放大器：脆弱性评估和缓解规划的框架

• 批准号: 1209427
• 负责人: Gary Parker
• 金额: $ 50.06万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1209427&HistoricalAwards=false
• 关键词: WSC; Category; Collaborative; Climate; human

1209427ParkerThere is a pressing need to identify which elements of the coupled natural-human system are most sensitive to changes in land use and climate in the sense that they are likely to respond strongly to changes in these factors. Means of identifying such ?hot spots? of sensitivity to change would allow us to target remediation and other management measures where they will do the most good. This project will test and explore the ecologic and management implications of a novel hypothesis termed human-amplified natural change (HANC), which states that the areas of the landscape that are most susceptible to human, climatic, and other external changes are those undergoing the highest natural rates of change.The research team will develop a theoretical framework for vulnerability assessment and will test the HANC hypothesis through intensive study of the Minnesota River Basin (MRB), a 44,000 km2 agriculturally-dominated watershed in the upper Midwest. The MRB encompasses an extremely broad spectrum of natural and human-induced rates of change and sensitivity to land-use practices. Of particular interest is the complex nonlinear coupling between land use and river network processes, which has already resulted in severely impaired waters for sediment and nutrients. What will be the future condition of the waters and ecosystem services in the MRB under changing human actions and climatic conditions? Of the many potential land and water management options, which are most likely to produce a sustainable, resilient, and thriving coupled economic-environmental system? To answer such questions, this study seeks to:(1) determine the extent to which current high rates of sediment production are concentrated in areas that were undergoing high rates of natural change before the external changes were imposed; (2) study how thresholds and localized features in the system amplify and accelerate change and how such nonlinear effects can be parameterized in an integrated predictive modeling framework; (3) investigate the extent to which the human-amplified natural changes (HANC) in the geomorphic system contribute to observed ecological changes in the MRB; and (4) develop means to include HANC-based reasoning in decision analysis frameworks, including a suite of methods to identify sensitive regions, along with spatially targeted monitoring activities.Broader Impacts: Strong relationships previously developed with State regulatory agencies will ensure that the results from this project directly influence future land and water policy and management decisions. The research team will disseminate new knowledge directly to the public in close collaboration with State agencies via stakeholder meetings, widely attended regional meetings and informational reports. Further, they will develop a HANC-based analytical toolbox for evaluating areas prone to rapid change in the landscape, beginning with Midwestern agricultural landscapes. New knowledge generated from this work will be used to inform Science Museum exhibits related to the Anthropocene, develop innovative K-12 curricula in environmental science and engineering, and disseminate NSF?s Earth Science and Climate Literacy Principles via teacher training. The project supports three early-career PIs and training of graduate, undergraduate, and ?synthesis-postdoctoral? students in an interdisciplinary environment, co-advised by scientists in hydrology, geomorphology, ecology, biology, engineering, and economics.

1209427Parker 迫切需要确定自然-人类耦合系统中的哪些要素对土地利用和气候的变化最敏感，因为它们可能对这些因素的变化做出强烈反应。识别此类“热点”的方法？对变化的敏感性将使我们能够针对最能发挥作用的补救措施和其他管理措施。该项目将测试和探索名为人类放大自然变化（HANC）的新假设的生态和管理影响，该假设指出，最容易受到人类、气候和其他外部变化影响的景观区域是那些正在经历自然变化的区域。研究小组将开发一个脆弱性评估的理论框架，并将通过对明尼苏达河流域 (MRB) 的深入研究来检验 HANC 假设，明尼苏达河流域是一个面积 44,000 平方公里的农业主导流域。中西部上部。 MRB 涵盖了极其广泛的自然和人为引起的变化率以及对土地利用实践的敏感性。特别令人感兴趣的是土地利用和河流网络过程之间复杂的非线性耦合，这已经导致水域的沉积物和营养物质严重受损。在人类活动和气候条件不断变化的情况下，MRB的水域和生态系统服务的未来状况将如何？在许多潜在的土地和水资源管理方案中，哪些最有可能产生可持续、有弹性和繁荣的经济环境耦合系统？ 为了回答这些问题，本研究旨在：（1）确定当前高沉积物产生率在多大程度上集中在外部变化发生之前经历高自然变化率的地区； (2) 研究系统中的阈值和局部特征如何放大和加速变化，以及如何在集成预测建模框架中对这种非线性效应进行参数化； (3) 调查地貌系统中人类放大的自然变化（HANC）对 MRB 中观测到的生态变化的贡献程度； (4) 开发将基于 HANC 的推理纳入决策分析框架的方法，包括一套识别敏感区域的方法以及有针对性的空间监测活动。 更广泛的影响：之前与国家监管机构建立的牢固关系将确保结果该项目直接影响未来的土地和水政策和管理决策。 研究团队将与国家机构密切合作，通过利益相关者会议、广泛参加的区域会议和信息报告，直接向公众传播新知识。此外，他们还将开发一个基于 HANC 的分析工具箱，用于评估景观容易发生快速变化的区域，从中西部农业景观开始。这项工作产生的新知识将用于为科学博物馆与人类世相关的展览提供信息，开发环境科学与工程方面的创新 K-12 课程，并通过教师培训传播 NSF 的地球科学和气候素养原则。 该项目支持三名早期职业 PI 以及研究生、本科生和“综合博士后”的培训。学生在跨学科环境中，由水文学、地貌学、生态学、生物学、工程学和经济学科学家共同指导。