SGER: Fire Frequency and Trace Gas Flux in Grassland: Relationship to Remotely Sensed Indices of Net Primary Production

SGER：草原火灾频率和微量气体通量：与净初级生产遥感指数的关系

• 批准号: 9119323
• 负责人: Charles Rice
• 金额: $ 4万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1993-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119323&HistoricalAwards=false
• 关键词: SGER; Fire; Frequency; Trace; Gas

A wildfire that consumed more than 2000 ha of tallgrass prairie on Konza Prairie Research Natural Area created a unique opportunity to establish the relationship between methane, nitrous oxide, and carbon dioxide fluxes and net primary productivity (NPP). The fire left a matrix of watersheds with various fire histories. These watershed also vary in soil carbon and nitrogen amounts, factors which strongly influence trace gas flux and NPP. Watershed level differences in other constraints to NPP (water and light limitations) have been minimized by removal of litter. By concurrently obtaining trace gas flux measurements, ground measurements of foliage biomass, and satellite images, Drs. Rice, Seastedt, Tate, Turner and Benning propose to establish the relationship between methane flux, nitrous oxide flux and NPP in temperate semi-humid grasslands. Research conducted at the Konza Prairie is at the leading edge of grassland studies and the facilities available to these investigators are outstanding.

一场野火吞噬了2000多公顷的高草草原， Konza Prairie自然研究区创造了一个独特的机会， 建立甲烷、一氧化二氮和 二氧化碳通量和净初级生产力（NPP）。 消防 留下了一系列有着不同火灾历史的流域 这些 流域土壤碳、氮含量、因子 这强烈影响痕量气体通量和NPP。 分水岭层次 NPP的其他限制因素（水和光）的差异 限制）已通过清除垃圾来最大限度地减少。 通过 同时获得示踪气体通量测量，地面 测量植物的生物量，以及卫星图像，赖斯博士， Seastedt，Tate，Turner和Benning建议建立 甲烷通量、氧化亚氮通量与NPP的关系 温带半湿润草原。 在Konza进行的研究 草原是草原研究的前沿， 这些调查人员可利用的设施是一流的。