US-Belgium Cooperative Research: Formation of Gaseous Hydrocarbons as Influenced by Soil and Sediment Redox Chemistry Conditions

美国-比利时合作研究：受土壤和沉积物氧化还原化学条件影响的气态碳氢化合物的形成

• 批准号: 9008671
• 负责人: Ronald DeLaune
• 金额: $ 0.87万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-15 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9008671&HistoricalAwards=false
• 关键词: US; Belgium; Cooperative; Research; Formation

This award will support collaborative research in physiological ecology between Drs. Ronald D. DeLaune and William H. Patrick, Center for Wetland Resources, Louisiana State University and Dr. O. Van Cleemput, Faculty of Agricultural Sciences, University of Ghent, Belgium. The project addresses the formation and consumption of biogenic gases in soils and seeks to define the conditions under which specific gases are formed, and the rates and conditions leading to their consumption. The development of fully or partly anoxic conditions occurs in both waterlogged and in well drained soil conditions. A combination of high oxygen consumption through the presence of abundant, readily available carbon and limited oxygen supply induced by a high water content is the main reason for the onset of anaerobic conditions. These conditions are responsible not only for stress to plants, but are also favorable for the formation of gaseous hydrocarbons, such as methane, ethylene, ethane, propane and butane. These gases can have adverse effects on plants and can negatively influence the gaseous environment. The aim of this project is to investigate to what extent soils or sediments can be a source for gaseous hydrocarbons. Gaseous hydrocarbon production and evolution will be related to sediment Eh, pH and amendments, including different types of organic material. The investigations will be carried out in the laboratory, as well as in the field. The results of this study are expected to provide a better understanding of the carbon cycle and to lead to added information on the composition of the gaseous environment in soils and sediment, including possible source- sink relationships with the atmosphere. The research will benefit from the combined expertise of the US investigators in nutrient interactions and of the Belgian investigators in gaseous hydrocarbons and anaerobic soils.

该奖项将支持博士之间在生理生态学方面的合作研究。Ronald D. DeLaune和William H. Patrick，路易斯安那州立大学湿地资源研究中心，O. Van Cleemput博士，比利时根特大学农业科学学院。该项目研究土壤中生物气体的形成和消耗，并试图确定特定气体形成的条件，以及导致其消耗的速率和条件。在淹水和排水良好的土壤条件下，都发生完全或部分缺氧条件的发展。由于存在大量易获得的碳而产生的高氧消耗和高含水量引起的有限氧供应的结合是厌氧条件发生的主要原因。这些条件不仅对植物造成压力，而且有利于气态碳氢化合物的形成，如甲烷、乙烯、乙烷、丙烷和丁烷。这些气体会对植物产生不利影响，并对气体环境产生负面影响。该项目的目的是调查土壤或沉积物在多大程度上可以成为气态碳氢化合物的来源。气态烃的产生和演化将与沉积物Eh、pH和修正有关，包括不同类型的有机物。调查将在实验室和实地进行。这项研究的结果有望提供对碳循环的更好理解，并提供更多关于土壤和沉积物中气体环境组成的信息，包括可能与大气的源-汇关系。这项研究将受益于美国研究人员在营养相互作用方面的专业知识和比利时研究人员在气态碳氢化合物和厌氧土壤方面的专业知识。