Quest for understanding wetland carbon, nitrogen, and phosphorus sequestration potential in agricultural landscapes

探索农业景观中湿地碳、氮和磷固存潜力

• 批准号: 506809-2017
• 负责人: Creed, Irena
• 金额: $ 20.08万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=641985
• 关键词: Quest; understanding; wetland; carbon; nitrogen

Wetlands in the agricultural areas of Canada are increasingly vulnerable to loss due to urban and agricultural expansion and alteration due to climate change. Corresponding to this loss is the loss of ecological function - particularly the loss of carbon, nitrogen, and phosphorus sequestration. This biogeochemical loss has negative and potentially serious, implications for the integrity of downstream water quality, as seen in the recurrence of extensive algal blooms in Lake Winnipeg and Lake Erie. Policy and management practices seek to protect water quality and reverse the problem of downstream nutrient pollution, but the current technical understanding of the hydrological and biogeochemical processes that govern sequestration in wetlands and nutrient transport in watersheds is inadequate, and without the requisite scientific knowledge, may compromise or impair these efforts. To date, no research program has attempted to consolidate efforts to improve this understanding across national and multi-institutional levels. This research project will address this shortcoming by connecting leading research institutions, government, and operational partners in a collaborative program sharing expertise and monitoring efforts to answer focused questions relating to agricultural wetlands and their ability to sequester carbon, nitrogen, and phosphorus and improve the integrity of downstream waters. Monitoring and research efforts will focus on vulnerable agricultural landscapes in Alberta, Manitoba, and Ontario. The knowledge gained from this program will improve the ability to predict sequestration potential and downstream algal blooms at local and regional scales under different management and climate change scenarios. This will give governments and management authorities (in Canada and worldwide) the tools required to tailor wetland and carbon policy instruments to meet their nutrient reduction/sequestration targets. This research project addresses the NSERC target area of Environment and Agriculture and three of the six listed research topics under this target area: (1) Water: Health, Energy, Security; (2) Food and Food Systems; and (3) Climate Change Research and Technology.

由于气候变化导致的城市和农业扩张和改变，加拿大农业区的湿地越来越容易受到损失。与这种损失相对应的是生态功能的损失——特别是碳、氮、磷固存的损失。这种生物地球化学损失对下游水质的完整性具有负面且可能严重的影响，正如温尼伯湖和伊利湖再次出现大面积藻华所表明的那样。政策和管理实践旨在保护水质并扭转下游养分污染问题，但目前对控制湿地固存和流域养分输送的水文和生物地球化学过程的技术了解还不够，而且如果没有必要的科学知识，可能会妥协或损害这些努力。迄今为止，还没有研究计划试图巩固努力，以提高国家和多机构层面的这种理解。该研究项目将通过在一个合作项目中联系领先的研究机构、政府和运营合作伙伴来解决这一缺陷，共享专业知识和监测工作，以回答与农业湿地及其固碳、氮磷和提高完整性的能力有关的重点问题的下游水域。监测和研究工作将重点关注艾伯塔省、马尼托巴省和安大略省的脆弱农业景观。从该计划中获得的知识将提高在不同管理和气候变化情景下预测当地和区域规模的封存潜力和下游藻华的能力。这将为（加拿大和世界各地）政府和管理当局提供定制湿地和碳政策工具所需的工具，以实现其养分减少/固存目标。该研究项目涉及 NSERC 环境与农业目标领域以及该目标领域下列出的六个研究主题中的三个： (1) 水：健康、能源、安全； (2) 食品和食品系统； (3) 气候变化研究与技术。