Laser isotope analyzer for Nitrogen cycling studies in human impacted watersheds.

用于受人类影响的流域氮循环研究的激光同位素分析仪。

• 批准号: 458444-2014
• 负责人: Schiff, Sherry
• 金额: $ 9.41万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541926
• 关键词: Laser; isotope; analyzer; Nitrogen; cycling

Human inputs of Nitrogen (N) to aquatic systems far exceed natural sources mainly due to agricultural fertilizer application, wastewater discharge and waste generated by livestock. The result of these human activities is elevated levels of ammonium (NH4+), nitrate (NO3-) and nitrous oxide (N2O) in both surface water and groundwater. Anthropogenic addition of excess bio-available N ultimately threatens aquatic ecosystem health and the security and quality of drinking water supplies.

人类对水生系统的氮(N)输入远远超过自然来源，主要原因是农业化肥的使用、废水排放和牲畜产生的废物。这些人类活动的结果是地表水和地下水中的铵(NH4+)、硝酸盐(N03-)和一氧化二氮(N2O)水平升高。人为添加过量的生物有效氮最终威胁到水生生态系统的健康以及饮用水供应的安全和质量。