Hydrologic responses to concurrent changes in climate, land use and water use

对气候、土地利用和水利用同时变化的水文响应

• 批准号: RGPIN-2021-02454
• 负责人: Brookfield, Andrea
• 金额: $ 2.55万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=741989
• 关键词: Hydrologic; responses; concurrent; changes; climate

Water security is critical to social, political and economic stability, and environmental sustainability. Anthropogenic activities, such as land use change, water management, and natural resource extraction, impact environmental systems, including the hydrologic cycle. Understanding the interactions and feedbacks between them is necessary to ensure a safe and reliable water supply. The hydrologic responses to concurrent anthropogenic activities are particularly important as the synergistic effects can magnify or mitigate critical issues, including water availability and contaminant release and transport. Although recent research has highlighted the importance of an integrated approach for predicting hydrologic conditions, our understanding of the complex relationships between the hydrologic cycle and human activities remains incomplete. The long-term objective of my research program is to improve our understanding of the interactions and feedbacks between anthropogenic activities and natural environmental systems, focusing on implications for the terrestrial hydrologic cycle. With an emphasis on the development of effective and accessible modeling approaches, we will develop novel methods of identifying and quantifying the impacts of concurrent anthropogenic-driven processes on both the surface and groundwater systems. Specifically, we will differentiate between, and quantify, the contributions of climate, land use, and water use to changes in streamflow, with an emphasis on changes in groundwater discharge to streams. We will also assess how groundwater levels respond to changes in climate, and to changes in groundwater use that result from the same changes in climate. For both of these applications, we will improve the accessibility of these methods over existing approaches through innovative integration of globally-available datasets and computationally-frugal modeling approaches. Finally, we will develop new approaches to simulate how water management strategies affect processes driving both water quantity and quality, seeking to improve decision-making tools to mitigate negative impacts on water resources. The proposed research moves towards the program goal through model development, data integration, and knowledge transfer, providing a foundation to further improve our understanding of the feedbacks and interactions between anthropogenic activities and environmental systems, and guide resource management to ensure water security and environmental sustainability.

水安全对于社会、政治和经济稳定以及环境可持续性至关重要。人为活动，如土地使用变化、水资源管理和自然资源开采，影响环境系统，包括水文循环。了解它们之间的相互作用和反馈对于确保安全可靠的供水是必要的。对同时发生的人类活动的水文响应特别重要，因为协同效应可以扩大或减轻关键问题，包括水的供应和污染物的释放和迁移。虽然最近的研究强调了预测水文条件的综合方法的重要性，但我们对水文循环和人类活动之间复杂关系的理解仍然不完整。我的研究计划的长期目标是提高我们对人类活动和自然环境系统之间的相互作用和反馈的理解，重点是对陆地水文循环的影响。重点是开发有效和可访问的建模方法，我们将开发新的方法来识别和量化并发的水文驱动过程对地表和地下水系统的影响。具体来说，我们将区分，并量化，气候，土地利用和水资源利用的流量变化的贡献，重点是地下水排放到溪流的变化。我们还将评估地下水水位如何应对气候变化，以及气候变化导致的地下水使用变化。对于这两个应用程序，我们将提高这些方法的可访问性，通过创新的全球可用的数据集和计算节俭的建模方法的集成，在现有的方法。最后，我们将开发新的方法来模拟水资源管理策略如何影响驱动水量和水质的过程，寻求改善决策工具，以减轻对水资源的负面影响。拟议的研究通过模型开发，数据集成和知识转移向计划目标迈进，为进一步提高我们对人类活动与环境系统之间的反馈和相互作用的理解提供了基础，并指导资源管理，以确保水安全和环境可持续性。