Carbon-Nitrogen Analyzer

碳氮分析仪

• 批准号: RTI-2023-00505
• 负责人: Eimers, Catherine
• 金额: $ 6.5万
• 依托单位: Trent University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=765966
• 关键词: Carbon; Nitrogen; Analyzer

The measurement of carbon (C) and nitrogen (N) concentrations in soils and other environmental media is critical to understanding the role of soils in climate change, and for identifying management practices that maximize soil storage and minimize `leakage' to the atmosphere and waterways. This proposal is for a combustion CN Analyzer that is capable of measuring both C and N in a variety of environmental media, including soil, peat, vegetation and soil amendments (e.g., wood ash). Canada stores approximately ¼ of the world's soil C, with much of it found in peatlands. When that C is released to the atmosphere through natural or human disturbances like fires, logging, mining or agriculture, it can contribute to climate warming. Likewise, N storage in soils is strongly associated with human management, including fertilizer application to agricultural landscapes, and excess soil N can be released to the atmosphere as a greenhouse gas or transformed into nitrate, a human toxicant and stimulator of algal blooms in surface waters. Instrumentation purchased through this grant will allow the researchers to measure C and N concentrations in both natural and disturbed environments, including sites impacted by metal mining, forest harvesting, acid deposition and intensive agriculture and use this information to inform management practices. This research is needed to meet federal and provincial targets around climate change, soil health and water quality improvement.

测量土壤和其他环境介质中的碳(C)和氮(N)浓度对于了解土壤在气候变化中的作用，以及确定最大限度地提高土壤储存和最大限度地减少向大气和水道“泄漏”的管理做法至关重要。这是一个燃烧型CN分析仪，能够测量各种环境介质中的C和N，包括土壤、泥炭、植被和土壤改进剂（如木灰）。加拿大储存了世界上大约四分之一的土壤C，其中大部分位于泥炭地。当碳通过火灾、伐木、采矿或农业等自然或人为干扰释放到大气中时，就会导致气候变暖。同样，土壤中的氮储存与人类管理密切相关，包括对农业景观的施肥，土壤中过量的氮可以作为温室气体释放到大气中，或转化为硝酸盐，这是一种人类有毒物质，也是地表水藻华的刺激物。通过这笔拨款购买的仪器将使研究人员能够测量自然和受干扰环境中的C和N浓度，包括受金属采矿、森林采伐、酸沉积和集约化农业影响的地点，并利用这些信息为管理实践提供信息。这项研究需要满足联邦和省级在气候变化、土壤健康和水质改善方面的目标。