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

一场野火吞噬了康扎草原研究自然区域2000多公顷的高草草原，为建立甲烷、一氧化二氮和二氧化碳通量与净初级生产力（NPP）之间的关系创造了一个独特的机会。大火留下了一系列具有不同火灾历史的流域。这些流域的土壤碳和氮含量也存在差异，这是影响微量气体通量和NPP的重要因素。通过清除凋落物，流域在其他限制NPP（水和光限制）方面的差异已被最小化。通过同时获得微量气体通量测量、树叶生物量地面测量和卫星图像，dr。Rice、Seastedt、Tate、Turner和Benning提出建立温带半湿润草原甲烷通量、氧化亚氮通量与NPP之间的关系。在康扎草原进行的研究处于草原研究的前沿，可供这些调查人员使用的设施非常出色。

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.