NOx Emissions from Agricultural Soils: Intercomparison of Micrometeorological and Dynamic Soil Chamber Techniques

农业土壤的氮氧化物排放：微气象和动态土壤室技术的比较

• 批准号: 9420610
• 负责人: Viney Aneja
• 金额: $ 5.56万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9420610&HistoricalAwards=false
• 关键词: NOx; Emissions; Agricultural; Soils; Intercomparison

9420610 Viney Nitric oxide (NO) and nitrogen dioxide (NO2), which together constitute the conserved family NOx, play a key role in the chemistry of the atmosphere, especially in the formation of tropospheric ozone. Natural emissions of these gases from agricultural soils may be comparable in magnitude in rural regions to those from know anthropogenic sources. In particular, the role of nitrogen based fertilizers spread over rural agricultural soils in the production/emission of NOx is not well documented. Rural emissions similar in magnitude to anthropogenic sources make development of effective strategies for reducing ozone concentrations problematic. The objective of this proposal is to participate in an intercomparison study of methodologies for measuring NOx emissions from an intensively managed agricultural row crop. This study is to intercompare chamber and micrometeorological methodologies with extensive onsite characterization of soil physical and chemical properties, ambient air quality and atmospheric conditions.

小行星9420610 一氧化氮（NO）和二氧化氮（NO2）共同构成了氮氧化物的保守家族，在大气化学中起着关键作用，特别是在对流层臭氧的形成中。农业土壤中这些气体的自然排放量在农村地区与已知的人为来源的排放量相当。特别是，分布在农村农业土壤中的氮基肥料在NOx的产生/排放中的作用没有得到很好的记录。农村的排放量与人为排放源的排放量相似，这使得制定减少臭氧浓度的有效战略成为问题。 本提案的目的是参与一项关于测量集中管理的农业中耕作物的氮氧化物排放量的方法的相互比较研究。这项研究是相互比较箱和微气象方法与广泛的现场表征土壤物理和化学性质，环境空气质量和大气条件。