Managing agricultural systems to protect Canada's freshwater

管理农业系统以保护加拿大的淡水

• 批准号: 447528-2013
• 负责人: Madramootoo, Chandra
• 金额: $ 9.41万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=575326
• 关键词: Managing; agricultural; systems; protect; Canada

Lake Simcoe generates approximately$200M in annual revenues from tourism and recreation. However, the Lake ecosystem is severely degraded to excessive Phosphorus (P) accumulation over the years. This threatens the region's economy and revenue base, which is highly dependent on a clean lake. Intensive vegetable production in the organic soils of the Holland Marsh, is a major contributor of P to the Lake. A 3 year field study, led by researchers from McGill University, in conjunction with national and regional collaborators will design and test innovative water management methods, aimed at reducing nitrogen (N) and P pollution, due to agriculture in the Holland Marsh. Utilizing existing subsurface tile drains in the agricultural fields, two novel water control systems (controlled drainage and sub-irrigation) will be evaluated. N and P will be measured in the drainage effluent from experimental fields cropped to onions and carrots, as well as from a sprinkler irrigated and a control field. The water quality and crop productivity benefits of each water management system will be evaluated, to quantify and demonstrate the potential environmental benefits of each system. The results are of importance to policymakers who develop pollution reduction targets and programs, and recommend Best Management Practices (BMPs), as well as to vegetable growers. New information on water quality management of intensively cultivated organic soils in temperate humid climates will be obtained. Canada will benefit through the promotion of new BMPs for non-point source pollution control, and McGill will advance its research capacity and training of highly qualified personnel in the protection of freshwater ecosystems. An international research network, linking McGill and Guelph with universities in the US and Europe working on similar organic soil - water quality problems will be created.

锡姆科湖每年从旅游和娱乐中获得约2亿美元的收入。然而，湖泊生态系统的严重退化，过度的磷（P）积累多年。这威胁到该地区高度依赖清洁湖泊的经济和收入基础。集约化蔬菜生产的有机土壤中的荷兰沼泽，是一个主要的贡献者磷的湖。由麦吉尔大学的研究人员领导的一项为期3年的实地研究，与国家和地区合作者一起，将设计和测试创新的水管理方法，旨在减少荷兰沼泽农业造成的氮（N）和磷污染。 利用现有的地下瓷砖排水在农业领域，两个新的水控制系统（控制排水和地下灌溉）将进行评估。氮和磷将被测量的排水从实验田种植洋葱和胡萝卜，以及从喷灌和控制领域。将对每个水管理系统的水质和作物生产效益进行评估，以量化和展示每个系统的潜在环境效益。 研究结果对制定污染减排目标和计划的政策制定者以及蔬菜种植者都具有重要意义，并推荐了最佳管理实践（BMPs）。将获得有关温带潮湿气候下集约耕作有机土壤水质管理的新信息。加拿大将通过促进新的非点源污染控制最佳管理计划而受益，麦吉尔大学将提高其研究能力，培训保护淡水生态系统的高素质人员。一个国际研究网络，将麦吉尔和圭尔夫与美国和欧洲的大学联系起来，研究类似的有机土壤-水质问题。